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A ParkerStore is many things to many people. To put it simply, it’s your go-to local source for system solutions, complete hydraulic services and expert advice on a wide range of quality Parker components and applications.
Right around the corner and all around the world, over 3,700 independently owned Industrial Retail™ locations are ready to help you. Your local store's knowledgeable staff has one goal: to improve your productivity and profitability by providing everything you need for your motion and control related applications in one place.
Our retail experienceYou will find your local ParkerStore is designed with retail aisles, making it easy to find and select products. Products are stocked in easy-to-access bins, so you can readily pick them up and compare them. Related products are grouped together, and market-specific or seasonal products are highlighted to make them easy to identify and evaluate. Fabrication workshops, most visible, allow you to watch your custom hose and/or tube being cut, crimped, cleaned and assembled. And, while you're waiting, enjoy a beverage and/or snacks at the hospitality station.
Products
Your local ParkerStore provides a complete line of Parker hydraulic and pneumatic inventory including hydraulic hose, hydraulic fittings, air hose, chemical hose, water hose, tube fittings, stainless fittings, brass fittings, metric fittings, thermoplastic tubing, thermoplastic couplings, hydraulic filters, air filter regulator and lubricator products and more. Hose assemblies are custom made to your exact specifications and can be made quickly when you’re experiencing system and labor downtime.
Beyond reliable products; each location is operated by a distributor with a commitment to your local area. Knowledgeable associates can answer all your questions, provide tailored advice and 24-hour field services. Services include, but are not limited to:
ParkerStore HOSE DOCTOR®
Some locations offer the ParkerStore HOSE DOCTOR service. A technician will come to you for onsite maintenance or emergency services. Each vehicle is equipped with the Parker components and tools needed to provide a hose replacement, troubleshoot a system issue and even perform preventative maintenance. Find out more.
Fluid Analysis and Condition Monitoring ServicesDedicated to the overall health of your fluid systems, your local ParkerStore offers innovative services that cover system diagnostic, therapeutic and preventive needs. These comprehensive services will improve operational efficiency, productivity, and reliability. Read more about how an ounce of prevention could save you thousands.
Designed to ensure efficient and accurate repairs, your local ParkerStore offers you PTS. A Web-based application, PTS generates a unique identification code for each hose assembly which is printed on a durable barcode or RFID label. Fast and accurate product identification speeds up replacement regardless of where the original assembly was made. The hose assembly can be replaced with only the PTS ID number, eliminating the need to remove hoses prior to replacement - this can provide critical machine uptime and enable a more conveniently scheduled repair.
ParkerStore Rental ProgramThrough the ParkerStore Rental Program, you can utilize specialty tools and equipment without having to buy them. It’s perfect for those tools or equipment you only use occasionally, can’t afford to purchase right away or just want to try before you make a significant investment.
Rental equipment includes (varies by ParkerStore):
Hydraulic hose crimpers
Tube fabrication equipment (benders, cut-off saws, tube flanging & flaring machines
Filtration equipment
Diagnostic equipment
Designed to make renting equipment easy; a ParkerStore representative will help you identify the best equipment for your job and provide the training necessary to use it.
And if all that wasn’t enough, you can get rewarded for visiting/shopping with the Rewards Plus loyalty program, available at participating ParkerStores across the United States. It’s easy to get started, plus it’s simple: no purchase necessary, the more you visit, the more punches you get, the more rewards available. Visit your local ParkerStore and ask to join their Rewards Plus Loyalty program today.
Want to learn more? Check out the video below, visit www.parkerstore.com or use our locator to find your nearest ParkerStore.
Post contributed by: MRO Authority - ParkerStore Team, Parker Hannifin
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Even in optimal conditions, and in cases where hydraulic hose assemblies were properly made, the life expectancy of any hydraulic hose assembly is directly related to the operating parameters of your application. When a hose fails, it is often the result of some form of human error, misapplication, improper usage, or improper maintenance.
So, let’s look at the most common incidents that go wrong with hoses, the likely causes, and how to address each of these situations. Knowing how to properly identify any of the key causes of failure will help you avoid emergencies in the future!
Burst hose
A bursting hose occurs when the wire reinforcements fail in the braid along the outside of the hose. When this happens, there is little to no outward deflection of wire in the failed area. This can happen when a hose has simply lived out its service life, but it can also be a result of a high number of pressure cycles, or a continuous flexing of the hose in that one area. If you experience a burst hose, we recommend that you review the application, replace the assembly, and develop a preventative maintenance schedule.
Sometimes a hose will burst at the fitting, and there will be broken wires at the last shell grip or sometimes at the end of the nipple. This occurs when the hose continuously moves or pulls at the fitting. Excessive movement may be the result of pressure surges, the hose assembly length being too short, incorrect crimp dimension, or the hose bend may begin too close to the fitting. This can be fixed by lengthening or re-routing the assembly to allow for some slack. It is important to never stretch to fit, as assemblies may shorten when pressurized. Before starting to bend it, the hose should be routed straight for at least double the inside diameter of the hose. Clamp the assembly as necessary to avoid movement and review crimping techniques as well as proper tooling.
Burst at the outside bend
When a hose bursts at an outside bend, it stays set in a bent position, usually in sort of an oval shape—yet it’s still flexible. There may be some broken wires near the problem spot on the outside bend of a hose. If the application is a vacuum or suction, the hose may tend to be flattened out in the bend area, which may restrict the flow. If the bend is severe enough, the hose may have a kink. This happens when you don’t use the recommended minimum bend radius or the starting bend right at the fitting. When this occurs, the hose assembly has to be replaced. When doing so, you should make sure to re-route the new hose assembly to increase the bend radius according to the requirement. The hose should not begin to bend for a minimum distance of two times the inside diameter of the hose, and then stay within minimum bend requirements. It is also important to use the proper clamps as required.
Pressure issues
Sometimes pressure issues cause a hose to burst in multiple places. These are usually clean bursts with no random wire breakage and no sign of wire-on-wire abrasion or cover abrasion. This is normally caused by excessive pressure or pressure in the range of the minimum burst rating for the hose. You can adjust the system pressure to be within the established working pressure of the hose or replace the hose with one that has a higher working pressure than the system pressure. Don't forget to include any pressure spikes when choosing the PSI of your hose.
The fitting has blown offA fitting can blow off when the hose is not inserted into the shell of the fitting per the recommended length—which means all the grips are not being used. All the grips in the shell are needed to hold the fitting onto the hose. In fact, the last grip in the shell does about a quarter of the work in holding the fitting to the hose. In this case, you simply have to replace the hose assembly, and before inserting the fitting, make sure you mark the cover of the hose per the recommended value stated in our catalog—then insert the fitting until the end of the shell lines up to your mark.
When the assembly leaks between the shell of the fitting and the hose, it causes the fitting to blow off as well. This can happen when the shell of the fitting is either under or over the recommended crimp specifications. In this case, the hose assembly needs to be replaced and checked for proper fitting usage. It is also important to review the crimping instructions for the particular crimper being used, including tooling.
External damage
External damage to the hose cover occurs when the hose bursts around an area where there is an obvious twist in the hose. You will be able to see some broken wires. This occurs when the hose gets an unwanted twist during the assembly of the fitting due to a lack of proper lubrication. The next step is to review proper hose assembly procedures and replace the hose assembly. You may also have to use clamps to re-route the hose using the hose layline as a guide to assure the hose flexes in one plane.
Foreign object damage and abrasionWhen the cover has foreign object damage and/or abrasion, the reinforcement wire shows signs of being rubbed and possibly torn and corroded. This is from excessive rubbing or chafing of the hose against an external object—possibly other hoses or the wrong size clamp, or perhaps the impact of the hose on sharp corners or brackets. This could potentially call for: replacing the hose assembly, use a protective sleeve or hose guards, re-routing the hose assembly or, if appropriate, use proper-sized clamps to avoid contact with other objects.
Restricted hose bore
When the hose bore appears to be torn or may have broken loose from the reinforcement and piled up at the end of the assembly, resulting in a reduced flow or maybe no flow at all. In these cases, the outside of the hose may show signs of being flattened. This comes down to vacuum failure; the hose may have been kinked, flattened, or bent too sharply. In some cases, it may be due to poor adhesion or insufficient cure of the inner tube. Replace with a hose rated for the specific vacuum application.
When hoses are exposed to temperatures below their recommended limits during hose movement, the hose becomes affected. To address this issue, review the application and raise the temperature to within the boundaries specifies or replace it with a hose recommended for the given temperature parameters.
Heat effects can be apparent when the hose is hard, brittle, and cracks when flexed at room temperature. On its cover, there may be visible signs of being dried out and charred. What’s happened is aerated oils have caused oxidation in the hose’s inner tube, making the hose harden. Any combination of oxygen and heat will accelerate the hardening of the inner tube. The same effect may be caused by cavitation—the formation of empty spaces within the material; long service life can create these symptoms.
If your hose isn’t near or beyond its service life -
review the application
lower the temperature to within the hose’s working limits
replace the hose with one that has a qualified temperature rating
install heat guards or shields as required
If you find a hose’s inner tube contains numerous fine cracks yet remains flexible, and no cracks are found in the hose under the fittings, then the internal air may be too dry—probably due to the use of a lube-dry compressor or a refrigerated air-drying system. Replace this hose assembly with one that is rated for extreme dry air.
Fluid effects Erosion
When fluid is emitted at high velocity from an orifice and hits the inner tube, erosion occurs, and eventually, the inner tube is gouged through to the wire braid for several inches, causing the hose to spring a big leak. The erosion can also be caused by particles in the fluid. When this happens, you must replace the hose assembly.
Incompatibility
Fluid can be incompatible with just the inner tube, which can
In this situation, you need to replace the hose assembly with a hose that’s compatible with the fluid to be used or replace the fluid with one that is compatible with the hose material.
Hose cover blistersWhen a hose cover blisters, these blisters might contain fluid or a grease-like substance which may be a combination of the system's fluid and the plasticizers from the hose material. This happens when there’s fluid incompatibility with the hose materials. If this is the case, you should replace the hose assembly with one that’s compatible with the fluid, or replace the fluid with one that is compatible with the hose.
Check out our STAMP blog series and videos for additional information on selecting the right hose for your specific application.
If you have any questions about assembly techniques or bending, talk to your local ParkerStore professional or read our hose installation and routing blog for best practices. Also, talk to your ParkerStore pro about ways you can extend the life of the hydraulic hose in your application.
Knowing the above will help you in understanding how hose failures are caused, how to address them, or better yet, avoid them altogether. It is crucial to ensure you have the correct hose assembly and that it’s set up properly. Remember, you can always turn to the pros at your local ParkerStore—they will make sure you have the product that’s right for your application, and answer any questions you might have.
Watch the video and see Mike, our ParkerStore professional, walk-through the key reasons a hydraulic hose fails:
Article contributed by:
the ParkerStore Team, Parker Hannifin
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Hose repair has never been so easy with ParkerStore HOSE DOCTOR.
Ever wonder what you might do if your backhoe, tractor, dump, plow or any other hydraulic equipment stops working. If you don't know what the problem is, and it might be related to hose failure that’s when you call a ParkerStore HOSE DOCTOR – a skilled hydraulics technician, on-call 24/7, who is ready to help you get back to work.
Limit the interruption of a break and let us bring the solution to you with our mobile, hose repair solution. Trained professionals come to your site with fully stocked trucks to identify, diagnose and replace hose assemblies on hydraulic and pneumatic systems. Plus they're available anytime, day or night, for any of your service and repair needs.
Get the equipment, hose assembly repair and professional advice you need, so that your downtime doesn’t last a long time. Plus, ParkerStore HOSE DOCTOR is backed by our global network, so we're ready when and where you need us with over 1,000 vehicles around the world. Find a ParkerStore HOSE DOCTOR nearest you or call 1-866-550-HOSE.
Post contributed by:
Suzanne Favri, digital marketing specialist
Global Distribution & Sales Services, Parker Hannifin
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Whether you are getting ready to jackhammer a site for a new construction project, taking the tarp off heavy equipment to tune it up for the start of the new season or literally washing away the winter grime, here are three of the many products and services available from your local ParkerStore to help you meet the challenges that spring has to offer.
Comply with the new OSHA silica dust (RCS) standard by using the Parker Twinhammer™ Hose and Spray Kit. The hose delivers both air and water in a single, unitized configuration for pneumatic jackhammers and the spray kit provides a safe and reliable engineered transfer of water to the jackhammer bit. The kit is easy and convenient to install and provides efficient and consistent water angle, distance, flow and spray pattern for effective silica dust control.
Parker’s QuickFit™ Oil Change System makes oil changes for engines and machinery a faster, cleaner, and safer process. The ergonomic, QuickFit system allows for easier access, which simplifies the oil-change process and helps keep workers clean, safe, and more productive.
3. Water hose for whatever you need water for!
Parker water hose is available in many constructions and configurations. ParkerStores have tough-duty contractor-grade hose assemblies with crimped-on crush-resistant brass couplings for your Spring cleanup or hoses in bulk coils for high-pressure spraying, water jetting or other wash-down or transfer applications. Let us know what you need – we’ve got a water hose for you.
For these and other solution-oriented products and services, trust the experienced, knowledgeable team to help you meet your challenges this spring or all year round, visit your local ParkerStore.
Post contributed by:
Suzanne Favri. digital marketing specialist
Global Distribution & Sales Services, Parker Hannifin
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You may have seen or heard of a “ParkerStore HOSE DOCTOR” but do you know what one is? Let us explain!
Say your backhoe, tractor, dump, plow or any other hydraulic equipment stops working. It may have a hose failure or you may not even know what the problem is. You just know you need it fixed fast so you can get back to work.
That’s when you call a ParkerStore HOSE DOCTOR – a skilled hydraulics technician, on-call 24/7, who is ready to help you get back to work. You see, ParkerStore HOSE DOCTORs understand that your downtime translates directly into lost productivity, time and money, so they’ll come to your jobsite or location with a vehicle stocked with hoses, fittings and the tools needed to diagnose your failure, make and install a new hose assembly, and provide the repairs you need to get back to work promptly.
ParkerStore HOSE DOCTORs are also trained to help you determine possible trouble spots in your hydraulic system and offer solutions to maintain your productivity and prevent downtime. Their services can include system troubleshooting, preventive maintenance and diagnostics, fluid sampling and even inventory services if you need regular product deliveries or other support.
Beyond that, a major benefit of working with a ParkerStore HOSE DOCTOR is gaining access to the full array of quality Parker products, and the service and support of the global ParkerStore distribution network. This extensive network supports a wide range of customers, markets and applications with more than 3600 service points in 90 countries.
So, while ParkerStore HOSE DOCTORs are skilled, on-call hydraulics system technicians with the parts and service you need to get back to work, they really are your 24/7 lifeline for productivity!
Want to learn more? Check out the video below, visit www.hosedoctor.com or in the US call 1-866-550-HOSE.
Post contributed by:
Suzanne Favri, digital marketing specialist
Global Distribution & Sales Services, Parker Hannifin
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he MRO Authority - ParkerStore™ Launches New Blog
If you are in the northern U.S., you probably know the Groundhog warned us about six more weeks of winter. Snowplow operators – you can keep winter at bay (and prevent headaches) with reliable hydraulic lift system replacement parts and service from your local ParkerStore.
Pioneer Snowplow Couplings are heat-treated to provide excellent wear resistance and are plated with clear chromate (Chrome 6 Free) to provide outstanding corrosion resistance in the harsh salt and sand environment. The 4000 Series 1⁄4” body couplings are a double shut-off poppet design with a superior elastomeric seal on the poppet valve that will prevent the seepage of hydraulic fluid when the coupling is disconnected. This coupling is interchangeable with other manufacturers’ snowplow couplings.
Parker is the leading manufacturer of hydraulic hose, fittings and crimping technology and your ParkerStore is well stocked with durable hoses of all sizes to replace a hose if you go down. Our GlobalCore hydraulic hoses are designed, built, and tested to the ISO 18752 specification, so they are built to take the heat (and the cold!) of plowing activities.
Steel tube fittings and adapters from Parker feature ToughShield (TS1000) enhanced standard plating.
This ultra-resistant plating prolongs part life by up to 1,000 hours, offering unmatched corrosion protection at no additional cost. Fittings and adapters have the same torque values, coefficient of friction, pressure ratings, color and other specifications as the previous non-plated products.
ParkerStore also offers stainless steel fittings and adapters for the ultimate in corrosion protection.
Protective caps and plugs play a crucial role in the life of a quick coupling by covering the connecting surfaces when the coupler and nipple are disconnected. They help to keep contaminants out of the fluid system and are available with tether straps to keep them nearby when coupling halves are connected. Also available at your ParkerStore are color-coded caps and plugs to help visually identify connecting lines.
For more information about these and other tough-duty fluid system components designed to take the cold (and the heat!) visit your local ParkerStore.
Post contributed by:
Suzanne Favri, digital marketing specialist
Global Distribution & Sales Services, Parker Hannifin
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Does your hydraulic hose application cause excessive hose abrasion, pressure spikes, kinking or deep cuts? We understand how these issues happen and how to prevent them. And if there's a way your hose or hose application could be made more secure and safe, your local ParkerStore has a product for it. All of these products are designed to provide reliable, long-lasting, protection and help in prolonging the service life of your hydraulic hoses.
A wide variety of hose guards, protectors, sleeves and strain relievers are available to protect hydraulic hose and tubing, helping to eliminate damage caused by extreme heat, and water abrasion to extend the life of the hose assembly. These hose guards and hose sleeves also provide protection to workers from slippage, spillage or hose movement due to vehicle traffic.
Protect with hose sleeving products
Partek Defense is designed to provide protection to personnel and equipment in the event of a hose burst by containing the energy of the burst, up to 12,000 PSI. It features a multi-layered construction that contains and then dissipates the energy and media within the hose assembly. Partek Defense can be applied in any hose application but is most valuable in industries such as mining, construction and agriculture where operators work closely with a high-pressure hose. They are flexible and made with specially-coated fibers to protect against deterioration from sunlight, ozone and other elements.
While Partek Defense helps protect against hose burst and protection of the equipment operators, additional lines of the Parker Partek line offer protection specifically for the hose including abrasion, cuts and kinks.
Wrap it up with extra abrasion protection
The need for a protective hose sleeve is not always considered while designing for a hose’s application. Many hose assembly installations would benefit from a sleeve, but it is not obvious until all the other hoses and components are in place. Our Partek Wrap enables the hose sleeve to be installed after the hose assemblies have been positioned and secured in place. The Partek Wrap can be used as extra abrasion protection or to wrap multiple hoses or cables together onsite, making it easy to install if your hose assemblies are already in place.
Need a guard that can withstand greater than 200,000 abrasion cycles? Partek Nylon Protective Sleeving can and with its unique construction, it can do so without wearing through the fabric. Plus, it's effective in all climates with an ambient temperature range from 60 below zero to 200 degrees Fahrenheit. It has an exceptionally smooth interior wall, allowing rubber hose to move freely inside the sleeve; its lightweight, very flexible and super easy to install.
From nylon to heavy-duty polyethylene, the PolyGuard™ and ParKoil™ accessories are built to handle rugged conditions and are ideal for bundling plastic tubing or hose lines. They shield hoses from abrasions and cuts, minimize kinking and resist most solvents including water, oil, gasoline and hydraulic fluid without rusting or corroding. Essentially, two weights wrap up almost every application.
Also built to handle rugged conditions and constructed of plated steel wire, the Parker Spring Guard and Armor Guard both prolong the life of hose lines that are exposed to these operating conditions. They distribute bending radii to avoid kinking in hose lines and protect hoses from abrasion and deep cuts.
Parker Firesleeve is a flame-resistant sheath that protects a hose from extreme temperature conditions. Firesleeve easily slides over hoses and can be assembled with a Parker FSC or a properly-sized worm gear clamp.
The Parker CL Clamp provides hose support where long lengths are used. It gives you neater installation of hose lines and minimizes hose chafing. Using a low-pressure industrial hose? The Parker HC Clamp is a stainless-steel worm gear clamp designed specifically for low-pressure applications.
Ever have issues with hoses rubbing against other hoses, metal or concrete? Parker Hose Protection Shields can help prevent hose abrasion and extend hose life in these conditions. These flexible protectors simply clamp around the hose and are securely held in place by nylon cable ties. By the way, you don’t need to disconnect a line to install a Parker Hose Protector Shield the way you do with a continuous tubular sleeve. Just wait until the installation is up and running to see exactly where contact needs to be prevented. Hose Protector Shields are a fast and extremely cost-effective way to isolate fluid lines from direct contact with other lines, components or structural members.
Safety restraining system for pressure hoses
The Parker Hose Whip Restraint System is designed for hoses in high-pressure applications. In the event that a hose separates from its fitting, this system is designed to prevent the violent whipping of a pressurized hose, which can cause damage to nearby equipment or people. Trust us, you don't want anyone near a whipping hose! The system provides an additional level of safety and helps prevent damage to nearby equipment or injury to operators near the failed hose by limiting the whip or travel of the pressurized hose after it breaks free from its hose fitting. Serious damage or injury can occur from whipping hoses, especially at higher pressures. The system is comprised of two parts − a hose collar and a cable assembly. The Hose Whip Restraint is not to be used in place of proper hose crimping procedures as outlined in HPD Catalog 4400. Exceeding the maximum operating pressure of the hydraulic hose jeopardizes the proper operation of the Hose Whip Restraint System.
There are two types of cable assemblies available, one for flange-type connections, the other for port adapters.
Bringing it all togetherThese are just a few ways your local ParkerStore can help you get more service life out of your hydraulic hoses. Of course if you have questions about any of the Parker hose guard and accessory products we've described here, ask your local ParkerStore professional.
Watch the video and see Mike, our ParkerStore professional, demonstrate some of the hydraulic hose guards and accessories available at your local ParkerStore.
Post contributed by:
Suzanne Favri, digital marketing specialist
Global Distribution & Sales Services, Parker Hannifin
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The ParkerStore MRO Authority blog is your go-to resource for the Maintenance, Repair, and Operations (MRO) in the digital space. Our goal is to improve your productivity and profitability. We're ready to help you; not just with critical replacement parts, but solutions. And it's important those solutions are available where you are - onsite and off. If you know us already, you know that getting you back to work is our "thing".
The ParkerStore Distributor network is the Industrial Retail® arm of Parker Hannifin, established to be your go-to, local source for hose, fitting, hydraulic, pneumatic and filtration products and services.
The most read ParkerStore blogs in 2017 have you covered with information on:
• expert tips and solutions for your business – both large and small;
• how-to articles and videos;
• the latest industry news.
MegaBots Development Is Faster and More Efficient with ParkerStore Onsite Container and PTS
MegaBots’ Eagle Prime is a 16-foot-tall, internally piloted humanoid fighting robot that battles on an epic-scale. While the MegaBots team had the inventiveness and technological expertise to create the robots, they realized they needed the “best of the best” fluid power products to help make them move. This led to the partnership between ParkerStore and MegaBots and introduced the company to two Parker resources that are playing a mega role in the manufacture of their giant fighting robots.
What is SafetyWorks Training and Why is it Important?
Many of our ParkerStore customers, like you, work in applications every day with hydraulics, compressed air, and pressurized fluids. Fluids under pressure and systems in motion can be very dangerous and with little regulation and education on how to avoid injury, we become susceptible to more, and unintended consequences, such as…
How to Ensure Proper Hose Measurement and Assembly Length Every Time
It is critical that you have the proper hose measurement in mind before cutting and crimping your hose, otherwise, your assembly is not going to be as efficient as it can be. And, we all know that lower efficiency negatively impacts our bottom line! Before beginning your hose crimping, there are a few safety reminders that are important to keep in mind...
Watch the video and learn more about ParkerStore and what it can do for you:
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So, you have a hydraulic hose that needs to be replaced. This is the perfect time to follow the acronym S.T.A.M.P. (for Size, Temperature, Application, Media and Pressure) to be sure you install a new hose that’s properly matched to its job and will have the maximum lifecycle possible before it needs to be replaced again.
Size determines velocity of oil (or other media) running through the hose. Too fast may result in system damage, leaks and inefficient operation. Too slow can cause low system pressure and poor performance. The inside diameter of a hose determines oil velocity: the smaller the I.D., the faster the velocity.
The correct hose size for a given application is a factor of flow in gallons per minute, velocity in feet per second and I.D. (See Parker Hose Product Catalog 4400 Technical Section, pages E-3 and E-4, for a nomogram to help you choose the correct hose size.)
How does temperature affect the service life of this hose?Two considerations are key to getting the maximum service life from the hose:
Choose a hose with a working temperature equal to or greater than both fluid and ambient temperatures. See Parker Hose Product Catalog 4400 Technical Section, pages E-5 and E-6 for a temperature chart to help you answer this question.
How does the hose application affect its dependability and performance?Hydraulic hose is used in many different applications, each with its own set of requirements. These can be distilled down to four key elements:
Bend Radius : If the hose is installed in a cramped space or is restricted in some way, you’ll need one that’s flexible, such as a Compact Spiral hose. (More on this in our blog post, Best Practices for Hose Installation and Routing Rules.)See page E-10 to E-19 in Parker Hose Product Catalog 4400 Technical Section for a more in-depth look at applications, along with tools to help you address all factors—including installation tips, assembly methods, a thread guide and metric conversions.
How does media affect hose requirements?The media being conveyed must be compatible with the entire assembly: hose and fittings. If not, you risk contaminating and damaging your entire system, as result of issues like hose cover blisters and erosion.
Our ParkerStore Identification Hose Failures video covers this topic in more detail. Also, refer to page E-20 in Parker Hose Product Catalog 4400 Technical Section for an overview of chemical resistance considerations.
How does pressure affect my hose selection?Pressure isn’t just about relief valve limit or maximum working pressure. You also need to consider:
In a dynamic system, the hose should have a working pressure equal to or greater than working and impulse pressures. Remember, this applies to the entire assembly, including hose ends. Refer to Parker Hose Product Catalog 4400 Technical Section, pages E-30 to E-38 for a more detailed look at pressure, including hose end connection ratings and a fitting size chart.
I still have questions about hose replacement. Where can I get help?
Posted contributed by:
Suzanne Favri, Digital Marketing Specialist
Global Distribution & Sales Services, Parker Hannifin
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Hydraulic Hose 101: Fast Facts
There’s more to installing a hydraulic hose than tightening metal connections. To maximize the life of the hose and its fittings, you’ll need to take into consideration a variety of factors about the specific application. Broadly, these boil down to:
Hose length
Bend radius
Hose twist
Routing and clamping
Future maintenance
As described in the ParkerStore Hose Installation & Routing Rules video, these considerations can be logically turned into rules to follow for best results.
1. Allow for slack
When hydraulic hose is pressurized, its diameter increases to contain the force of the fluid being transported. Its length therefore decreases—by as much as 4%. That means, for example, that a 3-foot assembly could shorten by as much as two inches! If there isn’t adequate length for slack, fittings will become stressed and cause a leak. Or, worse, the hose could come completely loose. (Note that too much slack can result in hose abrasion, or snagging on nearby components. For help determining how much slack to include, check with your local ParkerStore professional.)
2. Do not exceed minimum bend radius
The wire reinforcement built into a hydraulic hose limits its flexibility. How much can you bend a hose before its wire reinforcement begins to kink, going from a smooth arc to a sharp corner? That’s the bend radius you do not want to exceed when installing hose. The Parker hose catalog 4400 contains information to help you determine bend radius. Or, ask your local ParkerStore professional.
3. Use elbow fittings or adapters when necessary
A general rule of thumb for hose installation is if the hose needs to bend immediately before the metal fitting, you should keep it straight for at least twice the outside diameter (O.D.). If that’s not possible, use a 90 or 45 degree elbow fitting. This prevents fluid under pressure, traveling at high speeds, from directly impacting the core tube, which can deteriorates the hose and cause premature failure.
4. Limit bending to a single plane
Hydraulic hose will naturally experience some movement in use; the ability to do so is what makes flexible hose well-suited for transporting pressurized fluid in dynamic applications. But, this movement should be limited to a single dimensional plane: left to right, or up and down, or forward and back. Any combination of those, resulting in two planes of motion, is called a compound bend. Because the hose ends are fixed and held tight, more than one plane of motion can cause the hose to twist, leading to premature failure. (Note that some applications do require multiple planes of motion; if that’s the case for your application, ask a ParkerStore professional for recommendations on type of hose to use and how to install it properly.)
5. Avoid twisting the hose
On the outside surface of hydraulic hose is printed a continuous line of information, called the lay line. If, after installing the hose, the lay line spirals around like the stripe on a candy cane, it means the hose was twisted during installation. That’s not good; the hose is being stressed and can fail prematurely. Loosen the fittings to straighten the hose, and then re-tighten using double wrenching—one wrench to hold and another to tighten.
6. Use clamps to secure hose
Abrasion is a primary cause of premature hose failure. When the outside cover of hosing gets worn, it exposes the wire reinforcement, causing that wire to rust when exposed to moisture. To avoid this, clamp each hose individually so it’s held in place (allow for some motion, of course) and can’t rub against another nearby hose or other object. If clamping isn’t an option, ask your local ParkerStore professional for guidance.
7. Plan for future maintenance
Few things are more aggravating than having to take apart adjoining assemblies to access a specific hose that needs maintenance. Avoid this scenario by using different combinations of hose ends and tube fittings, such as short and long straights, or short and long elbows. Taking this step when installing a hose reduces maintenance effort and downtime.
Posted contributed by:
Suzanne Favri, Digital Marketing Specialist
Global Distribution & Sales Services, Parker Hannifin
Related, helpful content for you:
Decoding a Hydraulic Hose Layline
How to Ensure Proper Hose Measurement and Assembly Length Every Time
Working Together: Safety and Maintenance Tips to Ensure Hydraulic Hose Success
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