Pressure Control Valves

RV08-22 — Relief, Differential Area, Poppet-Type Valve
  Selection guide - similar valves.
  PDF file of this page.
  STP file for RV08-22.
  Request a quote.

RV08-22 Valve

RV08-22 Valve symbol

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 RV08-22 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 RV08-22 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.

• Adjustments cannot be backed out of the valve.
• Variety of pressure adjustment options including non-adjustable factory pre-set.
• Adjustment options A, B, and C: positive stops prevent springs from going solid.
• Optional bi-directional pressure (requires bi-directional pressure seal option).
• Hardened poppet and cage for long life.
• Optional spring ranges to 248 bar (3600 psi).
• Smooth response to pressure surges.
• Industry common cavity.
• Compact size.

Operating Pressure: 248 bar (3600 psi) maximum
Proof Pressure: 496 bar (7200 psi)
Burst Pressure: 1038 bar (16168 psi)
Flow: 30.3 lpm (8 gpm) maximum pressure
Internal Leakage: 0.25 ml/minute (5 drops/minute) max. to 85% of nominal setting
Crack Pressure Defined: bar (psi) evident at 0.95 lpm (0.25 gpm) attained
Reseat Pressure: Nominal 90% of crack pressure
Standard Spring Ranges: 3.4 to 248.2 bar (50 to 3600 psi)
   Shown in To Order section. Due to manufacturing tolerances, it may be possible to adjust
   the valve either lower or higher than the nominal ratings shown. If the valve is adjusted
   beyond the recommended maximum pressure range for F and H style adjuster
   options, the valve may not open to relieve pressure.

Spring Pressure/Turn
Pressure Adjustment Options
A, B, C and L
Options F and H
-4 4.6 bar/67 psi 5.8 bar/84 psi
-7 8.8 bar/127 psi 11 bar/159 psi
-13 16.7 bar/242 psi 21 bar/303 psi
-26 30.5 bar/442 psi 38 bar/553 psi
Temperature: -40 to 100° C (-40to 212° F) with 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_2w
Cavity Tool: CT08-2xx; See page 8.600.1
Seal Kit: SK08-2x-T; or SK08-2x-M (for cross-over relief application); See page 8.650.1


RV08-22 Flow-Pressure

RV08-22 Valve Dimensions


Cartridge: Weight: 0.16 kg. (0.35 lb.) to 0.22
(0.47 lb.) depending on adjustment option; Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and back-up standard. Anodized aluminum knob.

Standard Ported Body: Weight: 0.16 kg.
(0.35 lbs.); Anodized high-strength aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.
See page 8.008_2w.

Adjustment Option Details:
See page 6.003.1

RV08-22 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for RV08-22 Request a quote.