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- Products
HYRV12-26 (Pilot Operated Relief Valve)
Description:
A cartridge-style pilot-operated spool-type relief valve.
Operation:
The valve prevents flow from ① to ② until pressure at ① exceeds the set crack pressure and opens the pilot section. The pilot flow creates a pressure differential across the spool which causes the valve to open allowing flow from ① to ② protecting the circuit from over pressurization. This cartridge relief offers a smooth transition in response to a load change in a hydraulic circuit.
Specifications
|
Operating pressure: |
240 Bar |
|
Flow: |
See pressure drop vs. flow graph |
|
Internal leakage: |
115ml/min.max. to 80% of nominal setting pressure |
|
Reseat pressure: |
90% of crack pressure (crack pressure at 7.6 lpm/ 2 gpm) |
|
Standard spring ranges: |
6.9 bar to 27.6 bar |
|
10.3 bar to 103.4 bar |
|
|
20.7 bar to 241 bar |
|
|
Temperature: |
(-40℃ to +120℃) with NBR material seals |
|
Fluids: |
Mineral-based fluids with viscosity of 7.4 to 420 cSt. |
|
Cavity: |
HY12-2, see page H.1.5 |
|
Body material: |
Steel & ductile iron rated to 350 bar |