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

RVD50-20P

RELIEF VALVE PED

Overview

Description

The RVD50-20P is a screw in, cartridge style, direct acting, poppet type, hydraulic safety relief valve intended for use as a pressure limiting device for common hydraulic circuit protection. The RVD50-20P is suitable for use as a safety accessory in category IV group 2 applications according to the pressure equipment directive (PED) 2014/68/EU.

Operation

The RVD50-20P blocks flow from port 1 to 2 until sufficient pressure is present at port 1 to force the poppet from its seat. The cartridge offers fast response to load changes in typical hydraulic circuits requiring low hysteresis, low pressure rise and low internal leakage.

Features

  • PED-Certified to European Commission Pressure Equipment Directive 2014/68/EC.
  • Suitable for use as a safety accessory in PED Category IV Group 2 applications.
  • Salt spray protection to meet 960 hour specifications.
  • Hardened poppet and cage for long life.
  • No maintenance required (or allowed).
  • Rapid response to pressure surges.
  • Industry-common cavity.
  • Spring ranges from 13.7 bar (200 psi) to 350 bar (5075 psi).
  • Poppet developed using computational fluid dynamics to ensure dynamic response with minimal friction.
Pressure Ratings
Pressure rating:
  • 385 bar (5575 psi) Port 1
  • 10.0 bar (145 psi) Port 2
Proof pressure:
  • 517.1 bar (7500 psi)
Burst pressure:
  • 1379 bar (20000 psi)
Crack pressure defined:
  • Pressure evident at 0.95 lpm (0.25 gpm)
Reseat pressure:
  • Nominal 85% of crack pressure
Flow Ratings
Flow rating:
  • 113.6 lpm (30 gpm) Port 1 to 2 at max pressure
Maximum internal leakage:
  • 1 ml/min (20 drops/min)
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
  • -40 to 107 °C (-40 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)
Other Ratings
Corrosion protection:
  • 960 hr salt spray per ASTM b117
Fluids:
  • Mineral based or synthetic with lubricating properties hydraulic fluids. For other fluids contact HydraForce
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.20 kg (0.44 lb)
Internal wetted surface area:
  • 151 cm² (23.3 in²)
RVD50-20P_Chart(2022-02-24)
RVD50-20P_Dim(2022-02-24)
Cavity:
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-O X=u, bidirectional
RVD50-20P_Order(2022-02-24)

Model Options

RVD50-20P-H-J-R/S
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)