keta hydraulic

Cartridge valve Pressure Valves

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

PDF Download

A cartridge-style direct-acting relief valve

Technical Feature

OPERATION:
The valve is normally closed, pressure-limiting valves used to protect hydraulic components from pressure transients. When the ressure at the inlet (port ① ) reaches the valve setting, the valve starts to open to tank (port ② ), throttling flow to limit the pressure rise. These valves are smooth and quiet, essentially zero leak, dirt tolerant, immune to silting and are very fast.
PerformanceCurves
Technical Data

Operating Pressure
350Bar

Flow

See PRESSURE DROP VS.FLOW graph.

Cavity

SUN T-162A

Filtration

Refer to "Cleanliness of Hydraulic Fluid"

Maximum valve leakage at reseat
10 drops/min

Reseat Pressure
>80% of setting pressure

Standard Spring Ranges
A 35-210 bar; Preset:70bar
B 20-105 bar; Preset:70bar
C 70-420 bar; Preset:70bar
D 14- 55 bar; Preset:28bar
E 10- 28 bar; Preset:14bar
W 55-315 bar; Preset:70bar
S 3.5- 14 bar; Preset: 7bar

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
File Download

PDF File

LDRB
ACCESSORIES