Product Details

PRESSURE BYPASS VALVE

The R-K PBP series pressure bypass valve is a 3-port valve designed to relieve excess fluid pressure in piping systems. When mounted in-line, the pressure bypass valve will permit fluid to pass through the system. Adjust the stem to get desired outlet pressure and tighten the lock nut to hold that setting. When the fluid pressure approaches the valve setting, the excess fluid is vented through the bottom port. Pressure settings for the valve outlet can be set to relieve from 10-80 PSI. The valve is designed so there is no metal contact with the fluid.

This compact valve features top entry for easy maintenance and can be factory preset upon request.

Note: This valve is not designed for use in piping systems with back pressure on the downstream side.

Download Brochure With Datasheet

Seals :- EPDM, VITON, KALREZ, OTHER,

Valve Sizes

1/4" 1/2" 3/4" 1" 2" 1.5”

Relieves excess fluid pressure by venting it through a bottom port when the system pressure approaches the valve setting.

Adjustable screw and lock-nut for accurate pre-setting of relief pressure.

Wide working pressure range (10 to 80 PSIG).

Top entry for easy in-line maintenance.

Can be factory pre-set upon request.

No metal contact with the fluid.

Performance curves show flow rate with piston seals fully open and 100% fluid flow through the valve. These curves can change based on system flow and different pressure settings.

Test data was performed with 68°F water and 160 PSIG maximum pressure.

Performance curves will change with higher viscosity liquids and/ or higher temperatures.

Customers should consult R-K Industries for custom products or special applications.

Metrail	Temperature
OTHER	0°F-340°F
POLYPRO	0°F-180°F
PVC	0°F-140°F
PVDF	0°F-280°F
TEFLON	0°F-340°F

¼” to 1” Valve FNPT

1.5” to 2” Valve MPT

All valves are fully ported

Fast & Reliable Shipping

We ship your orders quickly with trusted global carriers.

Worldwide Delivery

We proudly ship to the USA, Canada, Europe, Australia, and many other international locations.

60-Day Money-Back Guarantee!

Not satisfied with your purchase? Simply return it within 60 days for a full, 100% refund — no questions asked.