These adjustable, spring-loaded poppet valves are used to limit system pressure. Excess pressure unseats the poppet, allowing flow with minimal increase in system pressure. As fluid is released the system pressure decreases until the spring force re-seats the poppet. Kepner's Flexible Seal Seat™ ensures bubble-tight shutoff of liquid or gas. The relief pressure can be set using a tamperproof internal adjustment screw. Standard and specialty valves handle a wide variety of applications requiring fast acting relief performance and tamperproof pressure adjustment.
Unit of Measure

Specifications

F - Inlet End Connections

N/A 1/2 FPT

G - Outlet End Connections

N/A 1/2 FPT

Body Materials

N/A 303 Stainless Steel Standard Steel
O-Ring Seals1 N/A Teflon®

Temperature

N/A -300 to 450 ºF-184 to 232 ºC

Crack Pressure Ranges

N/A 50 to 400 psi300 to 1000 psi900 to 2000 psi3.5 to 28 bar21 to 69 bar62 to 138 bar

Max. Operating Pressure

N/A 3000 psi207 bar

Max. Flow

N/A 10 gpm38 lpm

A - Total Length

N/A 3.840 in

D

N/A 0.44 in

Features and Benefits

N/A
- Flexible Seal Seat™ for zero leak (bubble-tight) seal
- Outer O-Ring provides non-pressurized threads
- Both O-Ring seals positively secured
- Wide relief adjustment range 50 to 2000 PSI (3.45 to 138 bar)
- Tamperproof Nylok® adjustment to set relief pressure/prevent slippage
- Poppet stop inside valve body prevents spring from bottoming out

  • 1 Other materials available