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

RVD50-20

RELIEF VALVE

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Overview

Description

The xrvd50-20x is a screw-in, cartridge style, direct acting poppet type relief valve intended for use as a pressure limiting device for common hydraulic circuit protection.

Operation

The xrvd50-20x blocks flow from port 1 to port 2 until sufficient pressure is present at port 1 to force the poppet off its seat. The cartridge offers fast response to load changes in circuits requiring low hysteresis, low pressure rise, and low internal leakage.

Features

  • Adjustments cannot be backed out of the valve.
  • Height of the adjuster does not change when the pressure setting is adjusted.
  • Hardened poppet and cage for long life.
  • Optional spring ranges to 345 bar (5000 psi).
  • Rapid response to pressure changes.
  • Industry-common cavity.
Pressure Ratings
Pressure rating:
  • 413.7 bar (6000 psi)
Proof pressure:
  • 785.4 bar (11000 psi)
Burst pressure:
  • 1515.8 bar (22000 psi)
Crack pressure defined:
  • Pressure evident at 0.95 lpm (0.25 gpm)
Reseat pressure:
  • Nominal 85% of crack pressure
  • 1 ml/min (20 drops/min)
Flow Ratings
Flow rating:
  • 113.6 lpm (30 gpm) Port 1 to 2 at max pressure
Maximum internal leakage:
  • 0.25 ml/min (5 drops/min) To 80% of nominal
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
  • -54 to 107 °C (-65 to 225 °F) With urethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 70 °C (-40 to 160 °F)
Other Ratings
Corrosion protection:
  • 960 hr salt spray per ASTM b117 (grvd50-20x)
Fluids:
  • Mineral based or synthetic with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.21 kg (0.46 lb) A
  • 0.23 kg (0.51 lb) B
  • 0.25 kg (0.56 lb) C l
  • 0.20 kg (0.44 lb) F h
Internal wetted surface area:
  • 158 cm² (24.6 in²) A b c l
  • 151 cm² (23.3 in²) F h
RVD50-20_Flow-Pressure(2022-02-24)
RVD50-20_Dim(2022-02-24)
Cavity:
  • VC10-2
Cartridge installation torque:
  • 63.7 to 71.9 N-m (47 to 53 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK10-2X-B X = n, v, HV, P
  • SK10-2X-M X = NC, VC, HVC, PC
  • SK10-2X-O X = U
Housings:
RVD50-20_Order(2022-02-24)

Model Options

RVD50-20F-H-J-R/S
F Adjustment Option
CODE
DESCRIPTION
A
1/4" Hex Allen Head
B
1-1/2" Diameter Aluminum Knob
C
1/4" Hex Allen Head with Cover Cap
F
Factory Preset Non-Adjustable
H
Factory Preset Hidden Adjustment
L
1/4" Hex Allen Head with Cover Cap and Lockwire Holes
P
PED 2014/68/EC
H Line Body
CODE
DESCRIPTION
0
No Body
6T
Aluminum SAE 6
8T
Aluminum SAE 8
6TD
Ductile Iron SAE 6
8TD
Ductile Iron SAE 8
2B
Aluminum BSPP 1/4" (2)
3B
Aluminum BSPP 3/8" (3)
4B
Aluminum BSPP 1/2" (4)
4BD
Ductile Iron BSPP 1/2" (4)
J Seal
CODE
DESCRIPTION
N
Buna-N
NC
Buna-N for Crossover Applications
V
Fluorocarbon
HV
High Durometer Fluorocarbon
VC
Fluorocarbon for Crossover Applications
P
Polyurethane
U
PPDI Urethane
R Spring
CODE
DESCRIPTION
08
13.7 to 58.6 bar (200 to 850 psi) Spring Range
15
41.4 to 103.4 bar (600 to 1500 psi) Spring Range
24
96.5 to 165.5 bar (1400 to 2400 psi) Spring Range
32
137.9 to 220.6 bar (2000 to 3200 psi) Spring Range
42
206.8 to 289.6 bar (3000 to 4200 psi) Spring Range
50
275.8 to 350 bar (4000 to 5075 psi) Spring Range
S Setting
CODE
DESCRIPTION
MXXX
Spring Setting in XXX bar
XX
Spring Setting in XX psi (x 100)

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