RV08-20 Relief, Direct-Acting Poppet (RV08-20)
A screw-in, cartridge-style, direct-acting, poppet-type, hydraulic relief valve intended for lower flow circuits requiring low internal leakage.
Product Operation
The RV08-20 blocks flow from 1 to 2 until sufficient pressure is present at 1 to force the spring-opposed poppet from its seat.
Note: The RV08-20 may be used in cross-over relief applications (back pressure on 2) 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.
• Optional salt spray protection to meet 1000-hour specification (Prefix G).
• Optional spring ranges to 275.8 bar (4000 psi).
• Rapid response to pressure changes.
• Compact size.
Product Ratings
Operating Pressure: 275.8 bar (4000 psi)
Proof Pressure: 482.6 bar (7000 psi)
Burst Pressure: 896.3 bar (13000 psi)
Flow: 22.7 lpm (6 gpm) at maximum pressure
Relief Pressure Setting Defined: Bar (psi) evident at 0.95 lpm (0.25 gpm)
Internal Leakage: 0.25 cc/minute (5 drops/minute) max. to 75% of nominal setting
Reseat Pressure: Nominal 80% of crack pressure
Temperature: -40 to 100°C (-40 to 212°F) with standard Buna seals; -26 to 204°C (-15 to 400°F) with fluorocarbon seals;-54 to 107°C (-65 to 225°F) with polyurethane seals
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-B; SK08-2X-M (for cross-over relief application); See page 8.650.1
