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- To display pricing, print or e-mail a quotation or order, you must follow these basic steps:+ Click here for general instructions
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+ Click here for product-specific instructions- Close product-specific instructions
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Step by step instructions of how to price, print an online quotation, or order a valve
First select a size, then the appropriate pressure rating or pressure group. Then select a spring range by clicking on it. Next, select the orifice size with the appropriate Cv value listed. This will require some computation so as not to oversize or undersize the valve. Then select the proper material for the body #9 and piston #7 which are the only wetted materials in this valve. Next, select the proper piston seal material #8, which must also be suitable for the media used. The more elastic Buna and Viton & Epdm seals tend to create less of a piston drag than the harder Teflon (PTFE) seal. The softer elastomeric seals produce a much closer band between crack and reseating pressures. Normally viton will handle most solvents, oils and chemicals and can handle most media at a wide range of temperatures. The temperature limits and capabilities of the elastomers and metal selections are are displayed for each material listed below. Next select the Spring chamber #3, spring hardware #1 & #2. The adjusting spring #5 is normally supplied in a chrome silicon steel which is completely protected inside the spring chamber and is not wetted or exposed to the flow media. These are all isolated (non-wetted) from the fluid media and should be selected based on the external environment the valve is exposed to. The carbon steel spring chamber, when selected, is painted on the exterior and interior to withstand normal atmospheric corrosion. Make sure all the circles are filled in, one for each selection. After the customized selection is made, click to continue and instructions will be provided to either print or e-mail the selection to someone, or even to yourself, or to proceed with ordering the item on line. Printing the selection will not commit one to ordering the items selected. Don't forget to update the quantity to take advantage of any quantity discounts.
Resellers, contact Straval for resale discounts. Should you have any questions on the product capability or product options, or are having difficulty in making the pricing selections or ordering, please contact us by e-mail or phone between 9AM-5PM Eastern time, Monday-Friday.
Holiday Closing
Place your orders now. We will be closed from Tuesday December 24th and will reopen on Thursday January 2nd. Our website will be fully functional and you may access pricing and also order "online" most products and options that are priced.
Search by: Straval Model #, Spec #, Part #
Search by: Straval Model #, Spec #, Part #
BPH-05-Npt-EX Back Pressure Regulating Relief Valve
view prices
- Piston operated
- 1/8"-1/2" NPT THD (larger sizes can be made available)
- Orifice sizes 0.047-0.25 inch (1.2-6.4 mm)
- Control/Relief pressures up to 4500 PSI (320 Bar) with multiple spring ranges (see table below)
- Materials: Hastelloy Valve,Monel Valve, Titanium Valve & Tantalum Valve(303 & 316 Stainless Steel Model can be found http://straval.com/products/back-pressure-regulators/bph05-05-npt/)
BPH-05-Npt-EX Back Pressure Regulating Relief Valve
View Pricing/Ordering Instructions
- Piston operated
- 1/8"-1/2" NPT THD (larger sizes can be made available)
- Orifice sizes 0.047-0.25 inch (1.2-6.4 mm)
- Control/Relief pressures up to 4500 PSI (320 Bar) with multiple spring ranges (see table below)
- Materials: Hastelloy Valve,Monel Valve, Titanium Valve & Tantalum Valve(303 & 316 Stainless Steel Model can be found http://straval.com/products/back-pressure-regulators/bph05-05-npt/)
