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

RVD50-20

RELIEF VALVE

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.

Ratings

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
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 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)

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
0.21 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

Performance

RVD50-20_Flow-Pressure

Dimensions

RVD50-20_Dim

Materials

Materials

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.

Adjustment Options: For ‘A-Alt’ Fixed Height Adjuster details, See adjustment options

Installation Specifications

Cavity
VC10-2
Cartridge installation torque
63.7 to 71.9 N-m (47 to 53 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK10-2X-B X = n, v, HV, P
SK10-2X-M X = NC, VC, HVC, PC
SK10-2X-O X = U

Order code

POSITION
CODE
DESCRIPTION
RVD50-20F-H-J-R/S
F
Adjustment Option
F
A
1/4" Hex Allen Head
F
B
1-1/2" Diameter Aluminum 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
F
P
PED 2014/68/EC
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
NC
Buna-N for Crossover Applications
J
V
Fluorocarbon
J
HV
High Durometer Fluorocarbon
J
VC
Fluorocarbon for Crossover Applications
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
08
13.7 to 58.6 bar (200 to 850 psi) Spring Range
R
15
41.4 to 103.4 bar (600 to 1500 psi) Spring Range
R
24
96.5 to 165.5 bar (1400 to 2400 psi) Spring Range
R
32
137.9 to 220.6 bar (2000 to 3200 psi) Spring Range
R
42
206.8 to 289.6 bar (3000 to 4200 psi) Spring Range
R
50
275.8 to 350 bar (4000 to 5075 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)
RVD50-20_Order