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.

Ratings

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
Maximum 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)

Operating Parameters

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

Properties

Cartridge 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

Performance

RV08-20_Flow-Pressure

Dimensions

RV08-20_Dim

Materials

Materials

Cartridge: Weight: 0.16 kg (0.35 lb) to 0.22 kg (0.47 lb) depending on adjustment option. Steel with hardened work surfaces. Zinc-plated exposed surfaces. Buna N O-rings standard. Anodized aluminum knobs and caps.

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

Adjustment Option Details: See adjustment options

Installation Specifications

Cavity
VC08-2
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

Accessories

Seal kit
SK08-2X-B X=seal option
SK08-2X-M X=seal option
SK08-2U-O X=seal option

Order code

POSITION
CODE
DESCRIPTION
RV08-20F-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
4T
Aluminum SAE 4
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
3BD
Ductile Iron BSPP 3/8" (3)
J
Seal
J
N
Buna-N
J
NC
Buna-N for Crossover Applications
J
V
Fluorocarbon
J
VC
Fluorocarbon for Crossover Applications
J
P
Polyurethane
J
PC
Polyurethane for Crossover Applications
J
U
PPDI Urethane
R
Spring
R
05
3.4 to 34.5 bar (50 to 500 psi) Spring Range
R
09
6.9 to 75.8 bar (100 to 1100 psi) Spring Range
R
18
17.2 to 158.6 bar (250 to 2300 psi) Spring Range
R
33
17.2 to 251.2 bar (250 to 3600 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)
RV08-20_Order