|How do I choose a needle valve stem type?||
When temperatures are below the limits for plastics, one may typically choose a soft-tipped stem, a blunt metal-to-metal stem, or a regulating metal-to-metal stem. Overall, soft-tipped stems will seal better than metal-to-metal stem types in non-lubricating media, such as dry gas. Regulating stem types offer better flow control over blunt and soft-tipped stem types. Soft tips are generally not a good idea unless you really need them, as there is no 'feel' of a dead stop when closing them. It is therefore very easy to over tighten and damage the tip. We often find users damaging the tips this way before they have even fitted the valve!
|Why do needle valves have flow arrows or flow direction mark?||There are two primary reasons why needle valves should be installed and used in accordance with flow markings. When the valves are closed it removes the pressure from the stem seal area, thereby extending stem seal life and eliminating the potential for stem leakage. In addition, some valve designs are susceptible to seat failures when the pressure is applied in the wrong direction.|
|What are the panel nuts on V Series Needle valves made from?||V2 Panel Nuts are made from brass and nickel plated. V4 through V8 Panel Nuts are 300 series stainless steel powered metal alloy.|
|Can we offer replacement bonnets for old style manifolds?||Yes. There is a kit that allows you to fit newer style bonnets to old style manifolds. Part numbers are of the form HBNTSISGRF-OJW/1 where 'IS' is isolate.drain, etc, and GRF is grafoil (PTFE for PTFE)|
|What is the difference between the standard direct mounting and IEC Type B?||The standard seal offered on the H-Series Direct Mount manifolds and the IEC 61518 Type B are very similar, they both have a seal groove machined into the manifold body and use either a PTFE or Graphite flat washer. The transmitter would have a flat face for both sealing types.
The difference between the two is that dimensions of the seal grove differ between the two meaning that IEC seals could not be used in a standard manifold similarly Standard direct mount manifold seals could not be used in an IEC manifold.
The reason that IEC may be used is that the specification specifically calls for the use of that standard in order to mate with a specific transmitter, having said that a standard direct mount manifold would seal to the same transmitter so it is the choice of the customer really.
|The customer ordered PTFE seals, (direct mount) but wanted grafoil. Can we issue a retro-fit kit? (or vice versa)||Yes. Replacement grafoil seals part number is HKITGRAPHOILSEALS. See page 20 of catalogue 4190PM and page 25 of catalogue 4190 FM|
|The customer ordered PTFE seats, (for a bonnet) but wanted grafoil. Can we issue a retro-fit kit? (or vice versa)||No, but we can offer replacement needle valve heads. Note if grafoil is required for temperature reasons, the max temp may limited by other factors such as PEEK tips.|
|Can we supply MTBF (mean time before failure) information for our manifolds?||No. Because of the number of variables involved in both media and environment that could have an impact on the life of a manifold, we would not be able to give life time information for these products.|
|Can we supply a pressure vs. flow graph for a rising plug valve?||We do not have a graph for the Rising plug valve, we can only offer the Cv value to enable the customer to carry out their own calculations based on the specifics for their media. The Cv value is 1.8 for a rising plug valve.|
|Which stainless steel are stainless steel bolts made from?||They are made from A4 80 which is high strength 316.|
|Do H-Series valves have throttling capability?||No. H-Series valves are on/off style.|
|Can H-Series needle valves be used in reverse? (i.e. outlet as inlet, or vent as inlet)||Yes, but it is not particularly recommended. The valve is designed to work in the other direction with the media flow moving from under to over the valve tip. It can be used in reverse, but it is not the most efficient use of the valve as the pressure on the tip would be reversed. Responsibility for this use remains with the customer.|
|Can I have a PEEK or PCTFE tip in a 6mm bore?||No. Soft tips are only for 4mm bore.|
|Do we have certification that our valves are asbestos free and/or free of ceramic fibre?||We do not have an official statement regarding this, but we can confirm that our valves are free from asbestos or ceramic fibre.|
|Are our valves helicopter certified?||No.|
|What is the warranty on needle valves?||In the event of an order, Parker Hannifin will underwrite the quality and workmanship of our needle valves of their manufacture and supplied under cover of your purchase order. We warrant our goods for a period of twenty four months from the date of acceptance into operational service provided they have been stored, installed, used and/or maintained in accordance with our recommendations. The limit of our warranty is for for the repair and replacement of finished product only resulting from faulty workmanship or materials only. Any repair would take place at the respective manufacturing facility and not on site. The system designer and/or user is responsible for ensuring that the selected goods are fit for the intended service|
|Do Parker valves and manifolds conform to ASME standards?||The valves are designed to meet the requirements of ANSI/ASME B16.34 where applicable. They have been designed with a 4:1 boundary safety factor and the valves comply with ASME B31.1.
There is a 1.5 x MWCP shell test and a 1.1 x MCWP seat test in accordance with various standards.
Because instrumentation valves are small they tend to fall outside of the scope of the full ASME standards so hence having to adopt the relevant parts.
|What is the shelf life for storage of Parker manifolds and fittings?||There is no formal shelf life. Boxed product should be stored with regard to protecting the packaging from deterioration. Products should be stored in a covered area, preferably indoors, and away from excessive moisture, heat and airborne contaminants. Parker Instrumentation products do not require preservation procedures to be applied during storage, the addition of desiccant and corrosion inhibitors is not required during normal storage.|
|What is the largest size connection for PTFREE?||1/2" for imperial sizes. The max size is limited by the hex size of a PTFREE fitting.|
|Can we have a replacement anti-tamper key for our bonnets?||Yes, part number is ATHKEY/1|
|What is the melting point of the colored dust caps used on our manifolds?||They are made from low density polyethlene, and the melting point is typically 105-115C (221-239F). Flash point is around 340C.|
|What is the corrosion allowance on valves?||The design philosophy of these small bore compact DBB valves, is such that corrosion allowance cannot be accommodated. If corrosion is an application issue, then we suggest the valve to be manufactured from a relevant corrosion resistant alloy. Parker are competent to deliver these products in wide range of such alloys. Please request a quotation.|
|What is the standard of the direct mount manifold outlet? Is it IEC B? It uses strange seals?||Our direct mount outlet is to a Parker standard, and does not meet the geometry of IEC61518, and different seals are to be used. If IECB is required, this should be stated at quote.|
|Can you please advise if you still offer the Ives style head assembly for retrofit of damaged manifolds.||We've depleted our stock of Ives heads, and so can no longer offer them. We can of course offer a new valve.|
|Do we supply RT (ring type) gaskets for monoflanges or other RT flanges?||No, these are off-the-shelf items and should be readily available elsewhere.|
|What grade of stellite do we use for our stellite tip bonnets?||We use Grade 6 stellite.|
|What is the leakage rate for a H-series manifold?||H-Series Manifolds are tested to ISO 5208 to leakage rate A which is no visible leakage detected.|
|Are H-series manifolds suitable for Steam?||We don't recommend for steam service. The U Series Valve from the US is the only valve that may be suitable, with a blunt stem and graphite packing. Contact US technical. However, if used with a 'pig tail' steam/vapour trap, then you can use the H-Series Manifolds, with graphoil packing recommended.|
|We bought a direct mount (DM) manifold, but wanted a line mount. Do you sell an adapter to convert to NPT?||Yes. Part number H755-316 consists of a single adapter and two bolts. You will required one for each direct mount port to adapt. (so, usually two-off per manifold)|
|Can we have sealing rings for HD6M05MCP?||No CP style manifolds do not come with sealing rings as the seal is on the transmitter.|
|Can we supply Sulfinert treated manifolds?||Yes, although we do not consider it a necessary operation if correct material choice is made. The body, stem, and lower washers are treated, and this is done for us in the US. Parts will have a SUL suffix.|
|Is there a spares/repair kit for HR series metering valves?||No, HR series are not user serviceable.|
|What is the part number for a replacement h-series bonnet handle?||KITTH, which contains the handle, and a grub screw.|
|We want to use manifolds for hydrogen gas and are worried about hydrogen embrittlement.||It is impossible for us to evaluate hydrogen absorption rate. Bear in mind that all our offering is susceptible to hydrogen embrittlement. however, we try to minimize the risk during our manufacturing route and material delivery condition.|
|What does the H stand for at the end of a monoflange part number? e.g. MFH120B8F600H||This was used in the early days of part numbering monoflanges when a HCT certificate was required. The H is now no longer required.|
|Is IGC testing standard for 316 material monoflanges?||Yes. The test is to ASTM A262 Practice E. Practice A is integral to Practice E and so is naturally included.|
|Are V-series needle valves available in NACE?||No, this is not cost-effective. Older catalogues do list this as an option, but it is no longer available.|
|I have a "4M-V4LCPKV-SS" needle valve that I'm designing a motor to rotate it so that I will have a motorized needle. My question is that how can I know the torque needed to rotate it?||The torque on any needle valve can vary depending on one or several of the following parameters : valve age , frequency of actuation , media , temperature,type of stem packing , type of stem tip , valve orientation , PBT / PAT stem design , valve size , operating pressure environmental conditions etc. IPD internal needle valve torque data is considered proprietary and cannot be shared without the approval of IPD Product Engineering.|
|Is the V series needle valve Silicon free?||Per Product Engineering, The standard lubricate used in the V-Series Needle Valve is hydrocarbon free so it would not contain silicon; however, we cannot provide a silicon free guarantee|
|Why is my 316 manifold (or parts of it) magnetic? 316 is non-magnetic.||All our materials are magnetic to different degrees, and even 316 can vary in magnetisim depending on the raw material's fabrication method, with cast 316 being magnetic and wrought 316 being non-magnetic. Very heavily worked 316 can become magnetic. Customers are invited to review our materials available and make a decision based on what we have available. We can send a sample if they press.|
|What is the maximum 'fluid speed' acceptable through a valve?||If you flows high pressure to atmosphere, the fluid velocity will be very erosive. The 'fluid speed' is how fast can you allow the flow to go. We can't help with that answer as there are so many other variables with that situation.|
|Is the 316 we use annealed and cold worked?||Typically, all our 316 is solution annealed and rapidly quenched. Some lines might undertake a cold sizing or cold drawing operation afterwards. Most of our stainless steel range meets at least one of the following:
ASTM A479 UNS S31600/31603
EN 10088-3 Grade 1.4400/1.4404
ASTM A276 UNS S31600/31603
ASTM A182 Grade 316/316L (forging)
|Is the Super Duplex we use annealed and cold worked?||For super duplex, we solution annealed and water quench. Some products undertake again a cold sizing or cold drawing operation. The typical industry codes that our super duplex meets are:
ASTM A479 UNS S32750 or S32760.
ASTM A276 UNS S32750 or S32760
ASTM A182 Grades F53 or F55 (forgings)
|Do we do an actuator for needle valves?||No, only for ball valves.|
|Why are some direct mount manifolds not available as fire safe (eg HDS5M)||The direct mount manifolds are not offered as fire safe as the transmitter which is directly mounted to the manifold is not fire safe rated. We can offer the Remote mount manifolds as fire safe, as the transmitter can be mounted in a safe location.|
|What does 'HEX90' mean at the end of a part number?||It's an extension to the bonnet to raise it up 90mm. This is used if the end user intends to lag or insulate an assembly, but wants the handle to poke through.|
|What pressure are involved with needle valve API 598 High Pressure Gas Test?||Body is tested to 9000 Psi and the Seats to 6600 PSI|
|Are the padlock holes for handle locking the same diameter on manifolds and needle valves, as for ball valves?||Yes, they are all standardized at 6mm diameter.|
|What is the size of hole and thickness of plate for panel mount bonnets?||The hole in the plate needs to be 26mm diameter, and the plate can be a maximum of 5mm thick.|
|If we have a free issue transmitter requested, including a pressure test (MOUNTT part number for example) do we get a certificate to say the test has been done?||Not specifically, but if it is requested that confirmation of the test is included on the quote request then a statement will be added to the inspection certificate to state that the air test was completed.|
|Can H-Series Manifolds be used in a sub-sea application?||
We are aware that some of our customers have used H-series manifolds in subsea applications before, but we do not have any specific data on their operating conditions. We therefore cannot make any recommendations as these could not be backed up with any test data because we ourselves have not tested the manifold under these conditions.
|We have an old Paker manifold with 'SA' at the end (eg SA1, SA2). What does this refer to?||
It's an old acronym and stands for 'Special Adaptation' and means there is a specific customer requirement.