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

RV08-20

RELIEF VALVE CARTRIDGE DIRECT ACTING POPPET TYPE

Overview

Description

RV08-20X is a screw in, cartridge style, direct acting, poppet type, hydraulic relief valve intended for lower flow circuits requiring low internal leakage.

Operation

RV08-20X blocks flow from port 1 to port 2 until sufficient pressure is present at port 1 to force the spring opposed poppet off its seat.

Features

  • Adjustments cannot be backed out of the valve.
  • Variety of pressure adjustment options including non-adjustable factory preset.
  • Adjustments options A, B, and C: positive stops prevent springs from going solid.
  • Optional spring ranges to 248 bar (3600 psi).
  • Rapid response to pressure changes.
  • Optional bi-directional pressure (requires bi-directional pressure seal option).
  • Compact size.

Notes

Supersession: Existing and new applications.

RVD58-20 Is our best-in-class relief valve and can functionally replace this valve in most applications. We strongly encourage you to consider this newer alternative.

Considerations:.

  • Comparable pressure and flow ratings
  • Comparable response rate
  • Better pressure rise characteristics
  • Smaller size
  • No dynamic seal
  • Competitive cost
  • VC08-2B cavity variation is required. Some manifolds may allow drop-in replacement.
  • Assistance is available to evaluate your application
Pressure Ratings
Pressure rating:
  • 275.8 bar (4000 psi)
  • 482.6 bar (7000 psi)
Burst pressure:
  • 896.3 bar (13000 psi)
Relief pressure defined:
  • Pressure evident at
  • 0.95 lpm (0.25 gpm)
Reseat pressure:
  • Nominal 80% of crack
Flow Ratings
Flow rating:
  • 22.7 lpm (6 gpm) At max pressure
Maximum internal leakage:
  • 0.25 ml/min (5 drops/min) Max to 75% 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 urethane seals with polyurethane 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 with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.17 kg (0.37 lb) A
  • 0.19 kg (0.42 lb) B
  • 0.22 kg (0.47 lb) C l
  • 0.16 kg (0.35 lb) F h
Internal wetted surface area:
  • 141 cm² (21.9 in²) A b c l
  • 166 cm² (25.7 in²) F h
RV08-20_Flow-Pressure(2022-02-24)
RV08-20_Dim(2022-02-24)
Cavity:
Cartridge installation torque:
  • 25.8 to 28.5 N-m (19 to 21 ft-lb)
Maximum allowable torque:
  • 40.7 N-m (30 ft-lb)
H style plug torque:
  • 10.8 to 13.6 N-m (8 to 10 ft-lb) N V P U
  • 34 N-m (25 ft-lb) NC VC PC max
Orientation restriction:
  • None
Seal kit:
  • SK08-2X-B X=seal option
  • SK08-2X-M X=seal option
  • SK08-2U-O X=seal option
RV08-20_Order(2022-02-24)

Model Options

RV08-20F-H-J-R/S
F Adjustment Option
CODE
DESCRIPTION
A
1/4" Hex Allen Head
B
1-1/2" Diameter Aluminum Knob with Aluminum Lock 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
H Line Body
CODE
DESCRIPTION
0
No Body
4T
Aluminum SAE 4
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)
3BD
Ductile Iron BSPP 3/8" (3)
J Seal
CODE
DESCRIPTION
N
Buna-N
NC
Buna-N for Crossover Applications
V
Fluorocarbon
VC
Fluorocarbon for Crossover Applications
P
Polyurethane
PC
Polyurethane for Crossover Applications
U
PPDI Urethane
R Spring
CODE
DESCRIPTION
05
3.4 to 34.5 bar (50 to 500 psi) Spring Range
09
6.9 to 75.8 bar (100 to 1300 psi) Spring Range
18
17.2 to 158.6 bar (250 to 2300 psi) Spring Range
33
17.2 to 251.2 bar (250 to 3600 psi) Spring Range
S Setting
CODE
DESCRIPTION
MXXX
Spring Setting in XXX bar
XX
Spring Setting in XX psi (x 100)