HYNRV08 (Cartridge Direct Acting Relief Valve)

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

Description:

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

 

Operation:

The valve prevents flow from ① to ② until the set crack pressure at ① is achieved.

The poppet then unseats allowing flow from ① to ② protecting the circuit from over pressurization.

 

Specifications

Operating pressure:

350 Bar

Standard spring ranges:

25 to 70 bar; preset: 50 bar

50 to 125 bar; preset: 85 bar

60 to 180 bar; preset: 138 bar

120 to 350 bar; preset: 207 bar

Reseat pressure:

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

Flow:

See pressure drop vs. flow graph

Internal leakage:

5 Drops/min. Max. to 80% of nominal setting

Temperature:

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

Fluids:

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

Cavity:

HY08-2, see page H.1.2

Body material:

Steel & ductile iron rated to 350 bar

 

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