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Valve technology has come a long way with many available features. Gas and liquid multimedia valves that are used in chemical analysis such as Gas Chromatography/Mass Spectrometry (GC-MS) and Liquid Chromatography/Mass Spectrometry (LC-MS), two analytical techniques, are used for chemical analysis and have very critical requirements. In this blog, we will discuss key aspects to look for when replacing a solenoid valve, and possible upgrades to increase reliability and efficiency.
In chemical analysis, samples are separated using chromatography and identified with the mass spectrometer. Gas and liquid multimedia valves are used for head pressure control, flow path selection, and calibration in these analytical systems. These instruments can call for critical leak rates in the parts per fractions of a cc/min range; these are critical leak rates that require very high-end valves.
All valves are not created equal. When selecting a valve for analytical systems one must do his or her research. If you base your valve selection for your equipment on the lowest price, you'll likely experience equipment failures due to high leak rates over the valve's life and low repeatability. Analytical systems require valves that can withstand fast response time, high flow and repeated operations while maintaining precision control to ensure highly precise and accurate test results. The valves should be compared on leak rates, reliability, types of materials used and subsystem availability.
Leak rates
Leak rate is one of the most critical specifications for a valve used in Gas/Liquid (GC-LC) Chromatography, and Mass Spectrometry (MS). Instruments that leak can introduce outside contaminants into the sample flow stream and negatively affect the analysis. This means product failure. The original valve specifications must match to ensure it can withstand the necessary pressure and temperatures in the existing system. Valves used in GC, LC and MS should be tested using a helium mass spectrometer to check for porosity and permeability of the seat and seal. Other features that need to be considered are maximum pressure capability, surface finish, power consumption, and seat and seal.
When selecting valves in Gas or Liquid Chromatography and Mass Spectrometry (MS), reliability and repeatability are of utmost importance. For a valve to have repeatability it needs a long-life cycle, high yield rates and a proven track record. When determining reliability in a valve you must evaluate the design, quality of material and manufacturing process and controls of the product.
Hit and hold
In high duty cycle applications, multimedia solenoid valves can generate heat at full voltage. In order to reduce this heat, higher-end valve manufacturers use Hit and Hold circuits. Hit and Hold circuits allow valves to be fully powered and remain in that state for a short time before voltage and current are reduced to lower levels, while still allowing the valve to remain energized. This procedure allows the valve to stay open with much less energy. This will also allow the valve to generate much less heat and decrease the power draw. As an OEM look for this type of circuit option in a valve to reduce heat, increase cycle life and reduce energy consumption.
Wetted material
Type of material is crucial for valves with critical leak requirements. The term wetted material is important to understand. Wetted material is defined as any surfaces and/or components that are (potentially) exposed to or in direct contact with the medium under pressure. A few more important things to know before selecting a valve are permeation rate, compatibility with certain fluids (specifically what your system uses), and potential out-gassing that can occur.
Subsystems
Finally, look for the availability of subsystems. A subsystem is a pre-assembled module that includes tubing, fittings, regulators, valves on a manifold and other accessories. A subsystem will eliminate the need to maintain multiple vendors and reduce the overall bill of materials, provide integration between components, create one single stream for technical support and customer service, and cost reduction in assembly and labor time.
Above is a Mass Spectrometry system that features two Parker subsystems. The backfill subsystem and calibration subsystem are examples of Parker's ability to provide customers with complete solutions. In these subsystems, Parker’s Series 9 and Series 4 valves were specifically selected because they offer:
All valves can be customized with several attributes and come in complete pre-assembled subsystems to reduce time and cost. Parker is proud to be the only company capable of offering a complete product selection with integrating manufactured components and custom assemblies. We are eager to help you with all your precision gas and fluidics needs.
Click here to view Parker Precision Fluidics entire product page.
Parker Precision Fluidics has over 30 years of experience in developing valve and pump technologies. Our engineers specialize in helping Original Equipment Manufacturers (OEM) to update original valves that are producing low yields.
Our applications engineering team is always available to provide recommendations and customize equipment to customer specifications.
To learn more, visit Parker Hannifin’s Precision Fluidics Division or call 603-595-1500 to speak with an engineer.
Article contributed by Jonathan DeSousa, division application engineer, Precision Fluidics Division, Parker Hannifin.
Other related articles on this topic:
Solenoid Valve Selection for Harsh Outdoor Applications
Advanced Liquid Valves Expand Microfluidic Possibilities
How OEMs Can Improve Life Science Instrumentation Performance
Valve technology has come a long way with many available features. Gas and liquid multimedia valves that are used in chemical analysis such as Gas Chromatography/Mass Spectrometry (GC-MS) and Liquid Chromatography/Mass Spectrometry (LC-MS), two analytical techniques, are used for chemical analysis and have very critical requirements. In this blog, we will discuss key aspects to look for when replacing a medical solenoid valve, and possible upgrades to increase reliability and efficiency.
In chemical analysis, samples are separated using chromatography and identified with the mass spectrometer. Gas and liquid multimedia valves are used for head pressure control, flow path selection, and calibration in these analytical systems. These instruments can call for critical leak rates in the parts per fractions of a cc/min range; these are critical leak rates that require very high-end valves.
All valves are not created equal. When selecting a valve for analytical systems one must do his or her research. If you base your valve selection for your equipment on the lowest price, you'll likely experience equipment failures due to high leak rates over the valve's life and low repeatability. Analytical systems require valves that can withstand fast response time, high flow and repeated operations while maintaining precision control to ensure highly precise and accurate test results. The valves should be compared on leak rates, reliability, types of materials used and subsystem availability.
Leak rates
Leak rate is one of the most critical specifications for a valve used in Gas/Liquid (GC-LC) Chromatography, and Mass Spectrometry (MS). Instruments that leak can introduce outside contaminants into the sample flow stream and negatively affect the analysis. This means product failure. The original valve specifications must match to ensure it can withstand the necessary pressure and temperatures in the existing system. Valves used in GC, LC and MS should be tested using a helium mass spectrometer to check for porosity and permeability of the seat and seal. Other features that need to be considered are maximum pressure capability, surface finish, power consumption, and seat and seal.
When selecting valves in Gas or Liquid Chromatography and Mass Spectrometry (MS), reliability and repeatability are of utmost importance. For a valve to have repeatability it needs a long-life cycle, high yield rates and a proven track record. When determining reliability in a valve you must evaluate the design, quality of material and manufacturing process and controls of the product.
Hit and hold
In high duty cycle applications, multimedia solenoid valves can generate heat at full voltage. In order to reduce this heat, higher-end valve manufacturers use Hit and Hold circuits. Hit and Hold circuits allow valves to be fully powered and remain in that state for a short time before voltage and current are reduced to lower levels, while still allowing the valve to remain energized. This procedure allows the valve to stay open with much less energy. This will also allow the valve to generate much less heat and decrease the power draw. As an OEM look for this type of circuit option in a valve to reduce heat, increase cycle life and reduce energy consumption.
Wetted material
Type of material is crucial for valves with critical leak requirements. The term wetted material is important to understand. Wetted material is defined as any surfaces and/or components that are (potentially) exposed to or in direct contact with the medium under pressure. A few more important things to know before selecting a valve are permeation rate, compatibility with certain fluids (specifically what your system uses), and potential out-gassing that can occur.
Subsystems
Finally, look for the availability of subsystems. A subsystem is a pre-assembled module that includes tubing, fittings, regulators, valves on a manifold and other accessories. A subsystem will eliminate the need to maintain multiple vendors and reduce the overall bill of materials, provide integration between components, create one single stream for technical support and customer service, and cost reduction in assembly and labor time.
Above is a Mass Spectrometry system that features two Parker subsystems. The backfill subsystem and calibration subsystem are examples of Parker's ability to provide customers with complete solutions. In these subsystems, Parker’s Series 9 and Series 4 valves were specifically selected because they offer:
All valves can be customized with several attributes and come in complete pre-assembled subsystems to reduce time and cost. Parker is proud to be the only company capable of offering a complete product selection with integrating manufactured components and custom assemblies. We are eager to help you with all your precision gas and fluidics needs.
Click here to view Parker Precision Fluidics entire product page.
Parker Precision Fluidics has over 30 years of experience in developing valve and pump technologies. Our engineers specialize in helping Original Equipment Manufacturers (OEM) to update original valves that are producing low yields.
Our applications engineering team is always available to provide recommendations and customize equipment to customer specifications.
To learn more, visit Parker Hannifin’s Precision Fluidics Division or call 603-595-1500 to speak with an engineer.
Article contributed by Jonathan DeSousa, division application engineer, Precision Fluidics Division, Parker Hannifin.
Other related articles on this topic:
Solenoid Valve Selection for Harsh Outdoor Applications
Advanced Liquid Valves Expand Microfluidic Possibilities
How OEMs Can Improve Life Science Instrumentation Performance
Reliability is the quality of being trustworthy or of performing consistently well. Here at Parker, we’ve made reliability the focus of our products since the company was established; this has made Parker’s products synonymous with reliability. The new BTX-Connect diaphragm pump meets next-generation manufacturers' needs for reliability, portability, noise reduction, and adds additional advanced technology that is revolutionizing miniature diaphragm pumps.
Reliability meets innovation
The Connect motor features the newest technologies in the miniature diaphragm pump industry. The Connect motor is a brushless motor with a patented motor bearing design that is key to the pump's reliability. The only component that wears overtime in a brushless DC motor are bearings, unlike brushless motors that have brushes that mechanically connect the rotor and are consumed over time. The bearing system of the motor is critical in pumps because of the reciprocating radial load on the motor shaft. The BTX-Connect uses a custom bearing assembly system designed to remove all of the bearing internal play; this ensures a longer lifespan and significant noise reduction. Additionally, the BTX pump family includes a proprietary advanced elastomer material, which is specifically designed to withstand the constant flexing and loading within the diaphragm pump enabling the pump system to go well beyond 15,000 hours of continuous use.
Advanced serial communication
When designing the BTX-Connect pump, we considered the need for digital communication. Prior to the BTX miniature diaphragm pump, most pumps only had analog methods of speed control, PWM, 0-5V input, or on/off. The BTX breaks new ground by offering the option of connecting with a serial UART (Universal Asynchronous Receiver/Transmitter) that can provide motor speed measurements, internal temp, and fail-safe shutdown conditions if over temperature or over-current occurs. This is ideal for monitoring the pump's performance during the pump's lifespan.
BTX-Connect accessories
In addition to all these standard features, the BTX offers accessories that can be purchased separately, including: the EZ-Mount base and Filter-Muffler. The EZ-Mount base enables easy installation in instruments and rubber isolators that reduce vibration. The Filter-Muffler offers even more noise reduction by filtering up to 10 microns. This pump is well suited for hospitals and in-home devices when patients require less noise and distractions.
Download this white paper and learn more about sound mitigation techniques for diaphragm pumps.
BTX-Connect options
The BTX has several options that include: single head, dual head, pressure only, vacuum only, and pressure/vacuum. See below chart for the single and dual head typical performance and ordering options. Contact Parker's Application Engineers for more options or special requirements. Additional motor options and configurations will be coming soon!
“The BTX-Connect is the next generation of miniature diaphragm pumps that are meeting next-generation devices needs”
David Sayer, test and reliability engineering, Parker Precision Fluidics
In conclusion, The BTX-Connect is the next generation of miniature diaphragm pumps by meeting and exceeding next-generation device manufactures needs. The brushless motor, custom bearings, advanced elastomer material, ultra-low noise, optimized counterbalance with advanced control options and capabilities are creating a new standard in miniature diaphragm pumps. The BTX is rated at 15,000 hours of continuous life at 12 psi.
Key features
Click here to read more about the new BTX-Connect pump and request a sample.
Our applications engineering team is always available to provide recommendations and customize equipment to customer specifications, call 603-595-1500 to speak with an engineer.
Article contributed by David Sayer, Parker Precision Fluidics Division. David has held multiple positions in engineering during his lengthy career, including positions in R&D, applications engineering, and test & reliability engineering. David's current position at Precision Fluidics focuses on validating reliability and uncovering improvement opportunities for Parker pumps.
Other related articles on this topic:
How to Integrate Motor Speed Control for Pump Motors in Medical Devices
Mini Subcomponents for Medical Devices Make a Big Design Difference
Reducing the Noise Impact of Medical Devices
We head into work each day with the expectation that we’ll put in our time and labor and then return home to our families safe and sound. The reality is though millions of Americans fall victim to workplace injuries each year. Some are as minor as a cut or scrape while others are much more severe and sometimes even fatal. Workplace incidents cause an enormous amount of physical, financial and emotional hardship for workers and their families. For organizations, the repercussions mean stiff penalties, violations and tarnished reputations.
Every seven seconds a workplace injury occurs in the United States. The numbers are even more staggering when analyzing the data and realizing this equates to 12,900 people hurt daily or 4.7 million a year, according to the National Safety Council. So, which industries are most receptive to workplace hazards? Manufacturing ranks in the top echelon of occupations with the largest number of injuries. With a growing demand for an increased workforce, these figures will likely continue to rise.
Most common workplace accidents
There are many hazards that put the health and safety of manufacturing workers at risk. From exposure to dangerous chemicals and corrosive cleaning solutions to confined spaces and heavy machinery; manufacturers have the difficult task of trying to address a wide array of safety issues.
One issue at the top of the list is oil. This chemical substance is prevalent in industrial equipment to make sure it is properly lubricated and operating. However, oil poses a wide range of health hazards to workers such as sensitization and irritation as well as physical risks including injury from slips and falls. Spills and leaks can happen at any point of the oil change process from draining and adding oil to disposing of the used oil.
Slips, trips and falls account for a third of all personal injuries and is a top cause of workers’ compensation claims. The risk is even greater for an individual performing oil duties, as they are exposed to toxic chemicals and susceptible to tripping and falling. The types of injuries include broken bones, cuts and lacerations, sprains, strains and tears. And most of these can easily be prevented.
Five key practices to avert a workplace incident:
Good housekeeping - If the plant floor is clean and well organized, an organization’s safety program can be effectively executed. Proper housekeeping should be a routine and be a part of each worker’s daily performance.
Wear proper shoes - Shoes are a critical component of personal protective equipment. Footwear that fits properly increases comfort and helps to prevent fatigue. Shoes or work boots with non-slip soles can also improve safety for employees.
Regulate individual behavior - The toughest of the three, it’s human nature to sometimes let our guard down and be distracted whether that’s being in a hurry or trying to manage multiple activities at once. It’s important for each individual to stay alert and pay attention to avoid becoming a statistic.
Standardize work instructions - Clear and concise work instructions and a standardized process reduce error and ensure the task at hand is completed safely and efficiently. Less variation in a process makes it easier to identify any existing safety issues.
Implement a new way to change oil to alleviate risk of workplace injury - In addition to the guidelines stated above, a safer working environment can be implemented by making simple adjustments to processes and procedures. For example, oil spills can be eliminated completely with a simplified approach to ensure safer and cleaner oil changes.
QuickFit™ Oil Change System from Parker provides a three-step process that allows oil changes to be done faster and more effectively. Oil is purged directly to the waste containment and then a vacuum is applied to extract the used oil from the pan. This same connection point is then utilized to refill the system with new oil through the filter. By applying one connection per compartment, it results in less variability during maintenance checks.
Reducing the number of steps in the process can eliminate any risk of safety hazards or spills, which improves an organizations’ bottom line by creating less consumable waste. Plus, QuickFit’s streamlined process helps to lower operating costs, increase profitability and reduce oil change time by 50 percent.
QuickFit applies ergonomic principles with a simplified design that grants easier access to even the most isolated and cramped components of an industrial application. This in return reduces exposure to fluids from fill to purge and greatly reduces the possibility of slips, trips and falls. Better safety conditions while changing oil saves time and costs on avoiding workplace injuries while increasing productivity.
Workplace safety cannot exist on best practices guidelines and policies alone. A safe working environment is established on a vision reflecting the way you do business through leadership, prevention and employee empowerment. And, a commitment to protecting the health and safety of people and the environments in which they operate. This demonstrates valid workplace safety and health that improves morale, productivity and the bottom line.
Ready to get started or have questions? Locate the Parker Distributor near you. Or read more about the QuickFit Oil Change System.
Contributed by Matt Walley, product sales manager, Quick Coupling Division, Parker Hannifin
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Piping systems are required to be painted for two reasons, to comply with the ASME 13.1 standard and to provide extra protection against environmental factors.
Explanation of the standard
The ASME 13.1 Standard states that companies are required to paint and label their piping systems to identify the media being conveyed. Each media has its own designated color and marking nomenclature. For example, compressed air piping systems must be painted blue, labeled "Compressed Air" in white lettering, and have an arrow designating the direction of flow.
In addition to meeting the ASME standard, painting the piping systems provides extra protection against harsh environmental factors that weaken and deteriorate the piping. These factors include, but are not limited to; high humidity, direct UV rays, extreme temperatures, persistent salt spray, and physical stress.
To meet the ASME 13.1 standard and to provide extra protection, some piping manufacturers provide per-painted piping options, but not all of these options are equal. To meet and exceed both of these requirements, look for piping that features a Qualicoat certified finish. Parker Transair has gone through the rigorous process to have our aluminum pipe meet the Qualicoat certification.
The Qualicoat difference
The Qualicoat certification body came into existence in 1986 in Europe. Formed out of several coating associations joining together, their goal was to raise the quality levels of material coatings in Europe. Today, Qualicoat has reached global recognition as the toughest coating standard. For a product to achieve Qualicoat certification, not only does the finished product need to pass the test, but also the coating process and materials used. Every region of the world has its own coating standard, but Qualicoat is still viewed as the toughest to achieve.
Comparing Qualicoat to the standard certifications side by side will show why a Qualicoat certified pipe is vital for your compressed air system. When looking at the process, for a pipe to be Qualicoat certified, the finished good, coating facility, and coating materials all must pass the certification guidelines. Under some certifications, only the finished good must pass the certification guidelines. To maintain Qualicoat certification, the manufacturing process must undergo an annual audit while others view this as an optional task.
A piece of compressed air pipe must undergo the same tests for both Qualicoat and regional certifications, but the pass/fail criteria is different. These tests are designed to test the coating’s adherence to the pipe under extreme circumstances. To test the adherence, the finished coating is crossed hatched, creating cuts in the coating, then exposed to various elements. If the coating does not come off during these tests, the pipe achieves certification. Prior to testing the adherence, the coating thickness is measured. For Qualicoat certification, the coating thickness must be 60 microns (0.06mm). For regional certifications, the coating thickness only must be 30 microns (0.03mm). After the coating has been measured, the adherence testing begins. For both Qualicoat and regional certifications, the piece of piping needs to withstand 3,000 hours in a salt spray test. In a simultaneous test, the pipe sections are submerged in a container of boiling water. For Qualicoat, the section of pipe is submerged for 2 hours. For regional certifications, the pipe is only submerged for 20 minutes.
Instead of paint or lacquer, the Qualicoat certified coating is powered coated onto the pipe. The chemical make-up of powder coating provides a stronger resistance to chipping and UV protection.
Qualicoat’s stringent criteria ensure the finished product can withstand the elements. This makes Qualicoat trusted certification in the construction industry. For compressed air piping, the coating will increase the durability allowing it to be used in most corrosive environments. Always consult with the manufacturer prior to installation to ensure compatibility.
When selecting an aluminum pipe for your compressed air system, remember to take into account not only the ease of installation but also the paint/finish on the pipe. A Qualicoat certified finish ensures the system will withstand the industrial environment for years to come.
Parker Transair aluminum piping has gone through the rigors to become Qualicoat certified for all diameters. (1/2" to 6")
For more information on Transair, visit our website.
This post was contributed by Guillermo Hiyane, product sales manager, Parker Fluid System Connectors Division.
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Drinking water is one of the most controlled food products. The materials of products in contact with drinking water can generate impurities and microbial growth. This makes a significant health risk as well as a danger to the environment.
Non harmonised regulation at the European and global level is leading to technical and normative constraints for the development of drinking water circuits. In Europe, the approval procedures for these applications are mainly regulated at national level. Approvals are granted by institutes mandated to carry out tests and issue certificates.
Today, 80 percent of the issued certificates correspond to the valves and pumps and 20 percent to the other equipment of a circuit such as fittings, filters, flow meters, meters etc.
All materials in contact with drinking water must guarantee their sanitary safety for:
Plastic materials (elastomers, thermoplastics or thermosetting)
Lubricants and additives;
Metallic materials;
Mineral materials (i.e. glasses and ceramics)
Certificates must be established for normal product use, while considering the risks related to the application such as peaks in temperature, pressure or chemical aggression. The innovation and technical expertise of the manufacturer are key to meet the multiplicity of European requirements.
What is KTW?
The KTW - W270 certification means that product components in contact with drinking water have been tested and approved by German laboratories (TZW and DVGW) according to the recommendations of the UBA (Umwelt Bundesamt). The specificity of this approval is to be one of the most restrictive in terms of lubricants composition restriction.
KTW and W270 are the most recognized requirements for German manufacturers in the water and beverages sector. Because of the representativeness of Germany in the European economy, these certifications become essential.
The LIQUIfit® Parker Legris products range
The LIQUIfit® fittings and tubes range from the Parker Hannifin LPCE division has been awarded KTW certification. With more than eight different certifications, this range now meets the most stringent requirements for drinking water and beverages worldwide.
The LIQUIfit® solution is the innovative solution of this sector. It is eco-designed from bio sourced material and offers unsurpassed compactness. LIQUIfit® is manufactured via a secure process offering traceability on each product and a unitary leak test. These unique features make it safe to operate and optimize use.
"It was important for us to offer manufacturers in the fields of drinking water and beverages, a new technology with the widest range of certifications for the peace of mind of our customers."
Chantal Beckensteiner, general manager, Low Pressure Connectors Europe Division
In addition, the range of LIQUIfit® fittings and tubes offers the widest mechanical performance with a pressure rating of 16bar and a temperature range of -10 ° C to 120 ° C.
"The worldwide Parker Group invests heavily in the water market. With the KTW certification of LIQUIfit® we now offer all European drinking water stakeholders a simple product to install with a wide range of performance in temperature and pressure."
Laurent Pouchard responsible for the OEM Business Unit of the LPCE divisions.
To conclude, the manufacturers of the drinking water and beverage industry want to ensure the health of people while optimizing their technical solutions and their manufacturing processes. Obtaining certifications is the guarantee to meet its requirements while allowing innovation to redefine technical solutions. LIQUIfit® is a new technology in this market and gives access to other markets such as process water transfer in liquid cooling systems.
For more information and to configure your product you can consult our Parker website or download our certificates KTW-W270 Fittings/KTW-W270 tubing
This article was contributed by Vivien Rialland, product manager, BU Industrial & Processing OEM, and Laurent Orcibal, e-Business Manager, E-business, Parker Hannifin's Low Pressure Connectors Europe Division.
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Clinical and analytical laboratories are under constant pressure to increase throughput. Throughput is the amount of material or items passing through a system. In this case, it’s the analyzing a higher volume of samples per day. This brings several advantages: reduced cost per sample, decreased sample turnaround time, fewer instruments needed, and reduction of laboratory space required. These reasons, among others, are why laboratory managers are pushing instrument manufactures to increase their throughput.
This article looks into what limits the volume of throughput in labs, and how breakthrough advancements in valve technology can provide the above-stated improvements for clinical and analytical labs.
What factors slow throughput?
The time it takes to perform analysis in the labs can greatly decrease throughput. Instrument manufacturers continually search for ways to increase the process speed of analyzing samples so larger qualities of the sample can be analyzed each day. One way to solve this problem is by reducing the length of fluid passageways so the liquids spend less time in transit. This creates less clean up later. Reducing the number of valves needed and using smaller valves that can be placed closer together are two ways to reduce transit times.
The second challenge to instrument manufactures is to ensure no carryover of one sample or reagent into another. This is of great concern to lab managers because the integrity of the sample will be compromised, and the analysis will be flawed. Lab technicians spend lots of time washing out valves to ensure carryover doesn’t occur. The washing process slows the system down and generates liquid waste which can be very costly to dispose of. These factors are why instrument manufacturers have focused on reducing carryover in sampling and reagent circuits.
How to increase throughput?
The Precision Fluidics Division of Parker Hannifin Corporation interviewed many laboratory instrument manufacturers to understand their needs. The manufactures expressed the need for a valve with low carryover with low internal volume, and the ability to reduce the complexity for fluidic circuits. Based on this feedback, Precision Fluidics developed the Parker Ultra Low Carryover Valve. This valve offers best in class carryover performance and allows its users to replace two valves with one. The patented pending design offers a very small internal volume of 13.6 uL from diaphragm seal to the outlet port.
"Today's valve offerings have serious limitations in reducing carryover. We are introducing a new valve that can improve throughput by reducing carryover while offering features that also provide increased efficiency and speed in fluid circuits.
— Don McNeil, product manager, Parker Precision Fluidics Division
Parker tested the Ultra Low Carryover Valve against pinch and rocker isolation valves from three leading manufacturers and compared their respective performances to the Parker Ultra Low Carryover Valve. The models selected were those with capabilities of achieving the lowest levels of carryover among their respective product lines.
During testing these systems were also set and optimized to achieve the best carryover performance and each valve were of a three-way configuration. For the test, each was filled with Brilliant Blue dye, switched to the second channel, and a precision syringe pump was used to provide flow through the valve. The absorbance was measured until it was no longer detectable.
The data below shows Parker Ultra Low Carryover Valve has a clear advantage in washing out faster than the industry-leading pinch and rocker isolation valves. In cleaning to the 10 PPM level the Parker Ultra Low Carryover Valve cleans out 65% faster and with 65% less volume than the next closest competitor, which uses an internal pinch design.
This means by using the Parker Ultra Low Carry Over Valve in the original equipment manufacturer (OEM) design, you can increase throughput while reducing liquid waste.
Another feature of the Parker Ultra Low Carryover is the capability of having four different states of operation. A traditional three-way valve can flow through channel A or channel B, but the Ultra Low Carry Over Valve can close off both simultaneously or open both simultaneously. This makes it possible to replace a common pairing of a two way and three-way valve in a series with a single Parker Ultra Low Carryover valve.
Design more efficient products to increase throughput
In conclusion, the new Parker Ultra Low Carryover will allow laboratory instrument manufacturers to design more efficient products to increase throughput in clinical and analytical chemistry labs. The following summarizes how The Ultra Low Carryover increases throughput:
Our applications engineering team is always available to provide recommendations and customize equipment to customer specifications.
To learn more, visit Parker Hannifin’s Precision Fluidics Division or call 603-595-1500 to speak with an engineer.
Don McNeil is the market development manager at Parker Precision Fluidics. Don has over thirty years of experience working in product management for Clinical Diagnostics and Analytical Chemistry companies. He holds a Bachelor's degree in Biochemistry and an MBA.
Other related articles on this topic:
Advanced Liquid Valves Expand Microfluidic Possibilities
How OEMs Can Improve Life Science Instrumentation Performance
Challenges Facing Life Sciences Instrument Makers and Users | Survey Results
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Projects related to the construction or buildings life cycle are increasingly complex and fast. The number of trades involved in the life of an industrial building is always larger and more specific. BIM, as a shared project management process represents an effective and innovative response.
What is BIM?
BIM comes from the English Building Information Modelling. The term building here is generic but also includes infrastructure.
BIM is primarily working methods and a 3D parametric digital model that contains intelligent and structured data.
It guarantees the sharing of reliable information throughout the life of a building, from its design to its demolition. The digital model is a digital representation of the physical and functional characteristics of this building.
BIM is a collaborative e-platform on a construction project, bringing together all the trades of this project, according to a common language.
BIM: A new service offered by Transair
The construction projects involve a strong collaboration between the different actors of a project, to better control each phase of the life cycle of a building.
As the leading manufacturer of modular industrial fluid networks; Transair® has identified the interest of integrating the BIM platform increasing used in the building sector.
"With BIM, the way construction professionals work is hanging, with multiple gains for the entire industry," said Nicolas Maupillé, project manager and DSO Manager at Transair®.
Always listening to the market, Transair® sees BIM as a performance accelerator in project management of its users and partners. Transair® has partnered with a specialist, BIM & Co. for the modeling, integration and publication of its global offering of modular networks for industrial fluids (BSP ISO and NPT ANSI).
BIM simplifies the design process in general, in particular by optimally integrating Transair® networks.
It, therefore, allows users and integrators of the Transair® system:
- To foster better collaboration between the various stakeholders of the same project
- To have accurate visualizations at all stages
- To reduce the risk of errors throughout the project
Transair® launches its library of BIM-enabled objects
All BIM & CO tools dedicated to Transair® make it easy to structure and distribute product data as BIM Ready objects to all users of the platform. The objects are thus adapted to all stages of the process, from design to construction, operation and maintenance.
To be BIM compatible, all the product families of the Transair® system are available in REVIT format, in LOD (Level Of Detail) 200 and 400. All the specific features of the Transair® product range are automated in a 100% template. dedicated.
To benefit from this new service, it is enough:
- To register on the BIM & CO platform,
- To access the Transair space
- Then download the template and the objects necessary for the construction of the desired network free of charge.
"Transair® wishes to integrate fully into the spirit of BIM by providing the various players with a quality service, which will allow them to understand the design. of their networks in an intuitive way and thus to stay focused on their projects, so it was important for us to propose to the design offices, objects, whose data are properly structured and informed"
Guillaume Tétard, business unit manager, Transair.®
For further information on Parker's BIM solutions contact us.
Article contributed by Nicolas Maupillé, DSO manager Transair® and Laurent Orcibal, ebusiness manager, Low Pressure Connector Europe, Parker Hannifin Corporation.
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Keep Employees Safe with Engineered Breathing Air Systems
Quick couplings allow fluid lines to be quickly and easily connected and disconnected without the need for tools. Non-spill or dry break couplings are a specific type of connector designed to eliminate spillage during a connection and disconnection.
What sets non-spill apart from traditional couplings? The flush face valve is the difference maker as this feature minimizes discharge and trapped air, while ensuring repeated dripless connections and disconnections. Non-spill or dry break quick disconnects are key to maintaining a clean environment, protecting system fluids from contamination caused by air or debris, and most importantly, keeping workers safe.
Environmental protection
Did you know 98 million gallons of fluid from hydraulic equipment is improperly deposited into topsoil, groundwater, rivers and lakes annually? That’s according to the National Oceanic and Atmospheric Administration (NOAA). The statistics are staggering when you come to the realization that one liter of oil can pollute up to one million liters of water.
Fluid leaks and spills have the potential to cause significant environmental issues. If contamination were to occur, organizations would be responsible for damage to ecosystems and wildlife, resulting in high cleanup costs and federal penalties. All industries from agricultural food production to manufacturing and service operations are affected by environmental protection regulations.
Even what looks like a small leakage can sometimes leave lasting effects on our precious planet. Non-spill quick disconnects keep fluids contained and its environmental impact to a minimum. The flush face valve quickly shuts off flow when fluid lines are disconnected and is engineered to eliminate spillage and fluid loss.
Maintain system performance
Hydraulic equipment relies on fluid system integrity to effectively transmit power for instant, accurate response and reliable performance. Contamination and the loss of performance transpire when debris and air work their way into the hydraulic fluid. It’s common for this to occur when dirt accumulates on the exposed surface of a traditional poppet valve tip when disconnected. Then, when the quick coupling is reconnected, air and contamination are pushed into the system fluid as the poppet valves open. The air and contamination can cause a loss of horsepower, temperate performance abnormalities and a variety of detrimental effects.
The flush face valves of non-spill quick couplings do not provide surfaces or areas for dirt to accumulate and collect. In environments where dirt is present, the smooth flat surface of the coupling end can be easily and quickly wiped clean. Additionally, non-spill valves keep air inclusion to a minimum because the flat-faced surface does not trap pockets of air as fluid lines are reconnected.
Promote workplace safety
There are many safety and ergonomic risks associated with hydraulic system leakage. Exposure to dangerous chemicals and confined spaces significantly enhance the chances of injury during maintenance operations. Slips, trips and falls account for a third of all personal injuries and is a top cause of workers’ compensation claims.
The most common reason why? Wet or oil surfaces as a result of incremental leakage. Spills and leaks can happen at any point and pose a wide range of health hazards to workers such as sensitization and irritation as well as physical risks.
Parker’s non-spill quick couplings
Parker offers a variety of non-spill couplers to fit versatile fluid applications. The FEM Series and 71 Series are both ideal for use in applications where air inclusion and fluid loss must be minimal. When chemical compatibility is also needed, Parker’s FS Series is a good option.
Parker’s FEM Series is compliant with the highest design and performance specifications set forth by ISO 16028. The standard defines a common dimensional and performance profile that ensures global compatibility and interchangeable connectability with other manufacturer’s quick couplings built to the same standard. Parker’s FEC Series nipples also provide the ability to connect under trapped residual system pressure. FEM Series quick couplings are constructed from steel material and are commonly used to connect hydraulic lines to tools used in construction and utility work. In addition, they are widely used on skid loaders and other similar machinery.
The 71 Series, an original Snap-tite design non-spill coupling, is rated for working pressures up to 10,000 psi. With material options featuring steel, 316 stainless and high pressure stainless steel, Parker’s 71 Series non-spill quick couplings are utilized in industrial applications as well as topside offshore oil drilling and construction.
FS Series non-spill quick couplings provide excellent chemical compatibility. The all stainless steel construction and Fluorocarbon seals make them ideal for closed system transfer of chemicals or corrosive media. Other applications include food processing and chemical dispensing.
The FEM Series | 71 Series | FS Series couplings are available for purchase on Parker.com. Simply add products to your cart for shipment within two days for in-stock items.
Article contributed by Anthony Mistretta, product sales manager, Quick Coupling Division, Parker Hannifin Corporation.
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Plentiful in North America and relatively inexpensive, natural gas produces 30 percent fewer greenhouse gas emissions than gasoline or diesel, making it an ideal alternative fuel for a diverse range of applications. Heavy-duty vehicles, such as refuse trucks, Class 7-8 trucks and buses are the largest users of this fuel source. Given this growing change, the need for reliable leak-free connections is even more important which is why Parker developed a CNG version of its Seal-Lok O-ring Face Seal (ORFS) fittings.
Known for proven leak-free connections, Seal-Lok ORFS fittings have many benefits for these CNG applications. The ORFS design provides unlimited reusability, resistance to vibration, zero clearance for easy assembly and replacement, as well as resistance to overtorque which has been known to be an issue for other fittings designs. Though ORFS fittings have traditionally been used in industrial hydraulic applications due to the elastomeric seals, the creation of a special CNG O-ring has now made this reliable connection a viable option in alternative fuel applications.
Since the available amount of energy per liter of natural gas is low compared to the traditional fuels, it is compressed to a pressure of at least 200 bar (2900 PSI). Therefore, special attention must be paid to the safety aspects related to CNG Cylinders on-board Natural Gas Vehicles (NGVs). One potential hazard seen in garbage truck operation is a load fire. Load fires are the most common type of truck fire in the refuse/recycling industry.
As you know, refuse vehicles travel in populated residential areas every day. It is critical to ensure the safety of not only the drivers, but anyone in the proximity of a NGV. The trucks are engineered to be extremely safe; however, load fires can heat the CNG storage tanks, raise pressure and introduce the risk of a rupture occurring. To reduce the risk of a rupture in the event of a fire, the CNG cylinders must be equipped with a Pressure Relief Device (PRD). The effectiveness of this specified fire protection system must be validated in a bonfire test.
Bonfire test requirements for Cylinders and PRDs are defined in Regulation 110, ANSI/CSA NGV 2, and CSA B51 Part 2, however, there are no specific bonfire test requirements for the fittings and seals connecting CNG tanks to the system. Given the growing use of Seal-Lok O-ring Face Seal CNG fittings in these connections, Parker felt it important to develop bonfire testing to validate they would perform if exposed to fire.
The criteria for passing were defined using the most rigorous requirements placed on CNG tanks in ANSI/CSA NGV 2 and CSA B51: samples pressurized to 3,600 psig and exposed to a minimum of 590 °C for 20 minutes. To qualify as passing the bonfire test, all seals must have maintained pressure for at least 20 minutes after being heated. This bonfire test was performed by the outside testing facility of Southwest Research Institute’s (SwRI) Fire Technology Department.
Seal-Lok for CNG passed the bonfire test. Passing the bonfire test confirms that Seal-Lok for CNG meets the industry safety requirements for CNG components used in natural gas vehicles. Seal-Lok ORFS CNG fittings are the first and only fittings in the industry to be Bonfire Tested. In addition to passing the bonfire testing, these fittings are also tested and certified by TUV according to the following standards: ECE R110, ANSI NGV 3.1-2014/CSA 12.3-2014 for stainless steel and zinc nickel fittings, and ISO 15500.
To learn more about the Seal-Lok for CNG Bonfire Testing, download the test summary.
Find out more about this product line and see the available configurations on the Seal-Lok for CNG product series page. If you have any questions about this article, please post them and we will respond. To talk to Parker regarding the benefits of Seal-Lok for CNG for your application, please call 614-279-7070.
Written by John Holzheimer, applications engineer, Parker Tube Fittings Division
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