keta hydraulic

Cartridge valve Pressure Valves

Relief Valves: Relief Valves Reducing Valves Sequence Valves Pilot Unloading Valves

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A cartridge-style pilot-operated poppet -type relief valve

Technical Feature

OPERATION:
The valve prevents flow from ① to ② until pressure at ① exceeds the set Cracking Pressure and opens the pilot section. The pilot flow creates a pressure differential across the poppet which causes the valve to open allowing flow from ① to ② protecting the circuit from over pressurization.
PerformanceCurves
Technical Data

Operating Pressure
Port①: 420bar
Port②: 210bar

Flow

See PRESSURE DROP VS.FLOW graph.

Cavity

10-2

Filtration

Refer to "Cleanliness of Hydraulic Fluid"

Max.Operating Pressure
420Bar

Internal Leakage
5 drops/min. max. to 80% of nominal setting

Reseat Pressure
85% of crack pressure (crack pressure at 0.95 lpm /0.25 gpm)

Standard Spring Ranges
7 to 55 bar; preset: 47 bar
35 to 140 bar; preset: 48 bar
70 to 280 bar; preset: 88 bar
140 to 420 bar; preset:140 bar

Temperature
-40°F to +250°F(-40°C to +120°C)

Fluids
Mineral-based fluids with viscosities of 7.4 to 420 cSt.

Body Material
Steel & Ductile iron rated to 350bar
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LPOPRV2-10
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