Pressure Control Valves

RV50-22 — Relief, Differential Area Poppet Valve, High Pressure
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RV50-22 Valve

RV50-22 Valve symbol
A screw-in, cartridge-style, direct-acting, differential area poppet-type, hydraulic
relief valve intended for use as a pressure limiting device in more demanding hydraulic
circuits requiring low hysteresis and low internal leakage at high working pressures.

The RV50-22 blocks flow from 2 to 1 until sufficient pressure is present at 2 to force the
spring-opposed poppet from its seat. The cartridge offers smooth transition in response
to load changes in common hydraulic circuits.
Note: The RV50-22 may not be used in cross-over relief applications (back pressure on 1).

• Adjustments cannot be backed out of the valve.
• Adjustments prevent springs from going solid.
• Hardened poppet and cage for long life.
• Smooth response to pressure surges.
• Industry-common size.

Operating Pressure: 345 bar (5000 psi) maximum
Flow: 75.8 lpm (20 gpm) maximum; see performance chart for flow handling capacity at max.
   setting for each spring range option. Pressure rise will vary with setting due to flow forces.
   Consult factory for specific flow characteristic values.
Pressure Rise: 0.34 bar per liter (5 psi per gallon)
Internal Leakage: 0.25 cc per minute (5 drops/minute) max. to 85% of nominal setting
Crack (Set) Pressure Defined: bar (psi) evident at 0.95 lpm (0.25 gpm) attained
Standard Spring Range: 34.5 to 344.8 bar (500 to 5000 psi) at 80% accuracy.

Temperature: -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: VC10-2; See page 9.110_2w
Cavity Tool: CT10-2xx; See page 8.600.1
Seal Kit: SK10-2P-T; See page 8.650.1




RV50-22 Flow-Pressure



RV50-22 Valve Dimensions



Cartridge: Weight: 0.23 kg (0.50 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-up
standard. Polyurethane seals with
Fluorocarbon back-ups recommended
for pressures over 207 bar (3000 psi).
Anodized aluminum knobs.

Standard Ported Body: Weight: 0.54 kg
(1.2 lb); Ductile iron (code "D") standard;
dimensions may differ; rated to 345 bar
(5000 psi). See page 8.010_2w.

Adjustment Option Details:
See page 6.003.1



RV50-22 Ordering Chart Manual Override Options