RV08-22 Relief, Differential Area Poppet (RV08-22)
A screw-in, cartridge-style, direct-acting, differential area, poppet-type hydraulic relief valve for use as a pressure limiting device in more demanding hydraulic circuits, requiring low hysteresis and low internal leakage.
Product Operation
The RV08-22 blocks flow from ➁ to ➀ until suffi cient pressure is present at ➁ to force the poppet from its seat.
The cartridge offers smooth transition in response to load changes in common
hydraulic circuits.
NOTE: The RV08-22 may be used in cross-over relief applications (back pressure
on ➀) with the use of the “C” double back-up ring seal option. See Ordering Table.
Product Features
• Adjustments cannot be backed out of the valve.
• Adjustment options A, B, and C: positive stops prevent springs from going solid.
• Hardened poppet and cage for long life.
• Optional spring ranges to 221 bar (3200 psi).
• Smooth response to pressure surges.
• Industry common cavity.• Compact size.
Product Ratings
Operating Pressure: 248 bar (3600 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: Due to manufacturing tolerances, it may be possible to fi eld-adjust the valve higher than the nominal ratings shown below.
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
Cavity: VC08-2; See Page 9.108.1
Cavity Tool: CT08-2XX; See page 8.600.1
Seal Kit: SK08-2X-T; See page 8.650.1; SK08-2X-M (for cross-over relief application)
