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Valves - Pressure Controls - Relief Valve - Direct Acting - Differential Area Poppet Type

RV50-22

RELIEF VALVE CARTRIDGE DIRECT ACTING POPPET

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Overview

Description

RV50-22X is 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

Operation

The RV50-22X blocks flow from port 2 to port 1 until sufficient pressure is present at port 2 to force the poppet from its seat. The cartridge offers smooth transition in response to loads in common hydraulic circuits

note: the RV50-22X may not be used in cross-over relief applications (back pressure on port 1)

Features

  • 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.
Pressure Ratings
Pressure rating:
  • 365 bar (5300 psi)
Proof pressure:
  • 482.6 bar (7000 psi)
Burst pressure:
  • 965.3 bar (14000 psi)
Crack pressure defined:
  • Pressure evident at 7.6 lpm (2 gpm)
Flow Ratings
Flow rating:
  • 75.7 lpm (20 gpm)
Maximum internal leakage:
  • 5 drops/min To 85% of nominal setting
Temperature Ratings
Operating fluid temperature:
  • -40 to 100 °C (-40 to 212 °F) With buna N seals
  • -26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
  • -54 to 107 °C (-65 to 225 °F) With polyurethane seals with urethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 70 °C (-40 to 160 °F)
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.23 kg (0.51 lb) RV50-22A
  • 0.25 kg (0.56 lb) RV50-22B
  • 0.28 kg (0.61 lb) RV50-22C
  • 0.22 kg (0.49 lb) RV50-22F
  • 0.22 kg (0.49 lb) RV50-22H
  • 0.28 kg (0.61 lb) RV50-22L
Internal wetted surface area:
  • 114 cm² (17.7 in²) A b c l
  • 126 cm² (19.5 in²) F h
RV50-22_Flow-Pressure
RV10-20_Dim

Materials

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).

Adjustment Option Details: See adjustment options

Cavity:
  • VC10-2
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Maximum allowable torque:
  • 67.8 N-m (50 ft-lb)
H style plug torque:
  • 10.8 to 13.6 N-m (8 to 10 ft-lb) N V P U
  • 32 to 34 N-m (23 to 25 ft-lb)
  • 34 N-m (25 ft-lb) Maximum
Orientation restriction:
  • None
Seal kit:
  • SK10-2X-T X=n, v, P
  • SK10-2P-M For PC seal option
  • SK10-2U-O For U seal option
Housings:
RV50-22_Order
POSITION
CODE
DESCRIPTION
RV50-22F-H-J-R/S
F
Adjustment Option
F
A
1/4" Hex Allen Head
F
B
1-1/2" Diameter Aluminum Knob with Aluminum Lock Knob
F
C
1/4" Hex Allen Head with Cover Cap
F
F
Factory Preset Non-Adjustable
F
H
Factory Preset Hidden Adjustment
F
L
1/4" Hex Allen Head with Cover Cap and Lockwire Holes
H
Line Body
H
0
No Body
H
6T
Aluminum SAE 6
H
8T
Aluminum SAE 8
H
6TD
Ductile Iron SAE 6
H
8TD
Ductile Iron SAE 8
H
2B
Aluminum BSPP 1/4" (2)
H
3B
Aluminum BSPP 3/8" (3)
H
4B
Aluminum BSPP 1/2" (4)
H
4BD
Ductile Iron BSPP 1/2" (4)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
R
Spring
R
50
34 to 345 bar (500 to 5000 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)

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