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.

Ratings

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
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 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)

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
0.58 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

Performance

RVCV56-20_Perf_Chart

Dimensions

RVCV56-20_Dim_Dwg

Materials

Cartridge: Weight: Option A 0.58 kg (1.27 lb), Option B 0.6 kg (1.33 lb), Option C, L 0.62 kg (1.36 lb), Option F, H 0.56 kg (1.24 lb). Steel with hardened work surfaces. Zinc-plated exposed surfaces. O-rings and polyester elastomer back-ups standard.

Ported Body:Weight: 0.57 kg. (1.25 lbs.) Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi). Ductile iron bodies required for operation over 207 bar (3000 psi).

Installation Specifications

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

Accessories

Seal kit
SK16-2X-B X=seal option

Order code

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