| Pressure Control Valve
Relief Valve, Poppet-Type
QRV08-22A = Differential-acting pressure relief valve =
A screw-in, cartridge-style, direct-acting, poppet-type, hydraulic relief valve for use as a pressure limiting device in demanding hydraulic circuits requiring low hysteresis and low internal leakage.
The QRV08-22 blocks flow from ② to ① until sufficient pressure is present at ② to force the poppet from its seat. The cartridge offers smooth transition in response to load changes.
Note: The QRV08-22 may be used in cross-over relief applications (back pressure on ①) with the use of the “C” double back-up ring seal option. See ordering options below.
|Proof Pressure (bar)||Flow||Internal Leakage
|User Temperature(0C)||Operation Voltage|
|221||350||30 lpm/8 gpm||0.15 cc/min
(First remove inside air)
|-400~ 120||± 15% voltage|
．100% full inspection for all products.
．Standard product life tested for million cycles.
．1000-hour salt-spray anti-corrosion protection tested.
．Raw material, oil, electroplating, etc. in manufacturing process with RoHS compliance.
．All coils tested by third party notarization inspection & CE certified.
．Heat Treatment on spool, poppet, cage for long life and low leakage.
．Coil rated for continuous duty
．Customized coil voltages and terminations
．Cartridges are customized.
．Manual override option.
．Multi industrial applications.
．Coil mold design with sufficient demands
Operating Pressure: 221 bar (3200 psi)
Proof Pressure: 350 bar (5075 psi)
Flow: 30 lpm (8 gpm)
Internal Leakage: 0.15 cc/minute
User Temperature: -40° to 120°C (-40° to 248°F) with Buna seals;
User Temperature: –26° to 204°C (-15° to 400°F) with Fluorocarbon seals
Filtration: With S: 100 mesh (149 micron)
Operation Voltage: ±15% voltage
Cavity: Q08-2; See page Q08-2