HYRV08-20 (Cartridge Direct Acting Relief Valve)

A cartridge-style direct-acting poppet-type relief valve.


A cartridge-style direct-acting poppet-type relief valve.



The valve blocks flow from ① to ② until sufficient pressure is present at ① to force the poppet from its seat.



Operating pressure:

248 Bar

Standard spring ranges:

3.45 to 34.48 bar; preset: 17 bar

6.9 to 75.86 bar; preset: 38 bar

17.24 to 158.62 bar; preset: 80 bar

17.24 to 248.28 bar; preset: 124 bar

Reseat pressure:

80% of crack pressure (crack pressure at 0.95 lpm/ 0.25 gpm)


See pressure drop vs. flow graph

Internal leakage:

5 Drops/min. Max. to 75% of nominal setting


(-40℃ to +120℃) with NBR material seals


Mineral-based fluids with viscosity of 7.4 to 420 cSt.


HY08-2, see page H.1.2

Body material:

6061-T6 Aluminum alloy rated to 207 bar, steel & ductile iron rated to 350 bar


See more