Pressure Control Valves

RVD50-20 — Relief, Direct-Acting, Poppet, High Pressure Valve
  Selection guide - similar valves.
  PDF file of this page.
  STP file for RVD50-20.
  Request a quote.

RVD50-20 Valve

RVD50-20 Valve symbol

A screw-in, cartridge-style, direct-acting, poppet-type, hydraulic relief valve intended for
use as a pressure limiting device for common hydraulic circuit protection.

The RVD50-20 blocks flow from 1 to 2 until sufficient pressure is present at 1 to force
the spring-opposed poppet from its seat. This valve offers fast response to load changes
in typical hydraulic circuits requiring low hysteresis, low pressure rise and low internal
For cross-over applications, maximum recommended flow is 37.9 lpm (10 gpm)
and maximum pressure is 207 bar (3000 psi). See ordering info below.

• Adjustments cannot be backed out of the valve.
• Height of the adjuster does not change when the pressure setting is adjusted.
• Adjustments options A, B, and C: positive stops prevent springs from going solid.
• Hardened poppet and cage for long life.
• Optional spring ranges to 345 bar (5000 psi).
• Rapid response to pressure changes.
• Industry-common cavity.

Operating Pressure: 350 bar (5075 psi) maximum
Flow: up to 114 lpm (30 gpm); see performance chart for flow handling capacity at max.
   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 specific flow characteristic values.
Internal Leakage: 0.25 cc per minute (5 drops/minute) max. to 80% of nominal setting
Crack (Set) Pressure Defined: bar (psi) evident at 0.95 lpm (0.25 gpm) attained
Reseat Pressure: Nominal 85% of crack pressure
Standard Spring Ranges: Due to manufacturing tolerances, it may be possible
   to adjust the valve either lower or higher than the nominal ratings shown below.
Spring Model Code Nominal Factory Rating
08 13.7 – 58.6 bar (200 – 850 psi)
15 41.4 – 103.4 bar (600 – 1500 psi)
24 96.5 – 165.5 bar (1400 – 2400 psi)
32 137.9 – 220.6 bar (2000 – 3200 psi)
42 206.8 – 289.6 bar (3000 – 4200 psi)
50 275.8 – 344.7 bar (4000 – 5000 psi)
Temperature: -40 to 100° C (-40 to 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: VC10-2; See page 9.110_2w
Cavity Tool: CT10-2xx; See page 8.600.1
Seal Kit: SK10-2x-B; or SK10-2x-M for cross-over relief application,
   max. pressure 207 bar (3000 psi); See page 8.650.1


RVD50-20 Flow-Pressure

RVD50-20 Valve Dimensions


Cartridge: Weight: 0.25 kg. (0.56 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-up standard. Anodized aluminum knobs.

Standard Ported Body: Weight: 0.16 kg. (0.35 lbs.); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions
may differ. See page 8.010_2w.

Adjustment Options:
For ‘A-Alt’ Fixed Height Adjuster details,
See page 6.003.1

RVD50-20 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for RVD50-20 Request a quote.