CRV08-22 Cross-Over Relief, Differential Area Poppet (CRV08-22)
The CRV08-22 cross-port relief uses two RV08-22 cartridges in an in-line plumbed housing. It is typically used to protect a hydraulic cylinder or motor from load-induced pressure surges. The cartridges used are screw-in, differential area, poppet-type valves, intended for use in lower flow circuits requiring low internal leakage.
Product Operation
The CRV08-22 manifold allows flow to pass through the separated ➀ to ➁ passages at low pressure loss. If pressure in either passage exceeds the valve setting, flow will
cross over to the opposite passage.
Note: Back-pressure at the outlet port of the relief cartridges will increase the nominal
setting of the valve on a 1:1 basis (i.e. 6.9 bar/100 psi back-pressure increases the
nominal setting by 6.9 bar/100 psi).
See catalog page 6.045.1 for cartridge specifi cations.
Product Features
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Hardened poppet and cage for long life.
• Optional spring ranges to 180 bar (2600 psi).
• Smooth response to pressure surges.
• Industry common cavity.• Compact size.
Product Ratings
Operating Pressure: 180 bar (2600 psi)
Flow: The Performance Chart illustrates flow handling capacity at maximum setting for each spring range option. Pressure rise will vary with spring (range) and with setting within range due to flow forces. Consult factory for specifi c flow characteristic values.
Internal Leakage: 0.25 cc/minute (5 drops/minute) max. to 85% of nominal setting
Crack Pressure Defi ned: bar (psi) evident at 0.95 lpm (0.25 gpm) attained
Reseat Pressure: Nominal 90% of crack pressure
Standard Spring Ranges:3.4 to 27.6 bar (50 to 400 psi);6.9 to 48.3 bar (100 to 700 psi);10.3 to 89.7 bar (150 to 1300 psi); 13.8 to 179.3 bar (200 to 2600 psi)
Temperature: -40 to 120°C
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Seal Kit: SK08-2X-M (for cross-over relief application) (2 required)
Body Part Number: 7070160
