Valves - Pressure Controls - Relief Valve - Direct Acting - with Anti-cavitation check

RVCV56-20

RELIEF VALVE WITH ANTICAVITATION CHECK VALVE, DIRECT ACTING POPPET

Overview

Description

The RVCV56-20X is a screw-in, cartridge, direct acting poppet relief valve with reverse flow check valve.

Operation

This device is intended for use as a pressure limiter and regulator in demanding hydraulic circuits which require fast response, low hysteresis, low leakage, low pressure override, and reverse free flow features. The RVCV56-20X blocks flow from port 1 to port 2 until sufficient pressure at port 1 will displace poppet from the seat. Relief flow discharges to port 2. Reverse flow occurs from port 2 to port 1 when differential pressure between port 2 and port 1 exceed check spring value.

Features

  • Maximum pressure 420.6 bar (6100 psi) at port 1. Adjustments cannot be backed out of the valve. Adjustments prohibit springs from going solid. Hardened spool and cage for long life. Fast, smooth response to pressure surges.
Pressure Ratings
Pressure rating:
  • 420.6 bar (6100 psi) Port 1
  • 68.9 bar (1000 psi) Port 2
Proof pressure:
  • 482.6 bar (7000 psi)
Burst pressure:
  • 965.3 bar (14000 psi)
Overshoot:
  • Less than 20% of setting
Adjustable pressure range:
  • 137.9 to 420.6 bar (2000 to 6100 psi) Port 1 to 2
Crack pressure defined:
  • Pressure evident at 0.95 lpm (0.25 gpm)
Reseat pressure:
  • Port 1 to port 2 85% of crack maximum
Crack pressure:
  • 0.34 bar (5 psi)
Flow Ratings
Flow rating:
  • 113.6 lpm (30 gpm) Port 1 to 2
  • 174.1 lpm (46 gpm) Port 2 to 1
Maximum internal leakage:
  • 0.53 ml/min (10 drops/min) Port 2 at 103.4 bar (1500 psi)
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 viton seals
  • -54 to 107 °C (-65 to 225 °F) 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:
  • 0.58 kg (1.28 lb) A
  • 0.60 kg (1.33 lb) B
  • 0.62 kg (1.36 lb) C l
  • 0.56 kg (1.24 lb) F h
Internal wetted surface area:
  • 0.68 cm² (48.2 in²) A b c l
  • 0.68 cm² (46.2 in²) F h
RVCV56-20_Perf_Chart(2022-02-24)
RVCV56-20_Dim_Dwg(2022-02-24)
Cavity:
  • VC16-2 variation 'a' (recommended for higher flows)
Cartridge installation torque:
  • 199 to 207.4 N-m (147 to 153 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK16-2X-B X=seal option
RVCV56-20_Order(2022-02-24)

Model Options

RVCV56-20F-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
12T
Aluminum SAE 12
16T
Aluminum SAE 16
12TD
Ductile Iron SAE 12
16TD
Ductile Iron SAE 16
6B
Aluminum BSPP 3/4" (6)
8B
Aluminum BSPP 1" (8)
8BD
Ductile Iron BSPP 1" (8)
J Seal
CODE
DESCRIPTION
N
Buna-N
V
Fluorocarbon
P
Polyurethane
R Spring
CODE
DESCRIPTION
30
137.9 to 206.8 bar (2000 to 3000 psi) Spring Range
45
213.7 to 310.3 bar (3100 to 4500 psi) Spring Range
61
317.2 to 420.6 bar (4600 to 6100 psi) Spring Range
S Setting
CODE
DESCRIPTION
MXXX
Spring Setting in XXX bar
XX
Spring Setting in XX psi (x 100)