Valves - Directional Controls - Check Valve

CV08-20

CHECK VALVE

Overview

Description

The CV08-20 is a screw-in, cartridge style, hydraulic check valve for use as a blocking or load-holding device

Operation

The cartridge valve allows flow from port 1 to 2, while normally blocking flow in the opposite direction. The cartridge valve has a fully guided check which is spring biased closed until sufficient pressure is applied at port 1 to open to port 2

Features

  • Hardened seat for long life and low leakage.
  • Optional bias springs for back-pressure application flexibility.
  • Fully guided check assembly.
  • Compact size.
  • Fast closing and seating.

Ratings

Pressure Ratings
Pressure rating
241 bar (3500 psi)
Flow Ratings
Flow rating
See graph
Maximum internal leakage
0.10 ml/min (2 drops/min) At
241 bar (3500 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 fluorocarbon seals
-54 to 107 °C (-65 to 225 °F) With urethane and polyurethane seals
Storage temperature
-40 to 70 °C (-40 to 160 °F)
Ambient temperature
-40 to 90 °C (-40 to 194 °F)
Other Ratings
Corrosion protection
960 hour salt spray per ASTM b117

Operating Parameters

Fluids
Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
Maximum operating contamination level
20/18/14 per ISO 4406

Properties

Cartridge weight
0.05 kg (0.12 lb)
Internal wetted surface area
60 cm² (9.3 in²)

Performance

CV08-20_Perf_Chrt

Dimensions

CV08-20_Dim_Dwg

Materials

Materials

Cartridge: Weight: 0.08 kg (0.17 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and back-ups standard.

Standard Ported Body: Weight: 0.16 kg (0.35 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.

Installation Specifications

Cavity
VC08-2
Cartridge installation torque
25.8 to 28.5 N-m (19 to 21 ft-lb)
Maximum allowable torque
54 N-m (40 ft-lb)
Orientation restriction
None. Aluminum body shown 3/4-16 unf-2a thread 0.88 22,2 [ ] across flats inch [mm]

Accessories

Seal kit
SK08-2N-T Buna N
SK08-2V-T Fluorocarbon
SK08-2HV-T Fluorocarbon
SK08-2P-T Polyurethane
SK08-2U-O Urethane

Order code

POSITION
CODE
DESCRIPTION
CV08-20-H-J-R
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
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
4
4 psi Bias Spring
R
10
10 psi Bias Spring
R
25
25 psi Bias Spring
R
40
40 psi Bias Spring
R
60
60 psi Bias Spring
R
80
80 psi Bias Spring
R
100
100 psi Bias Spring
R
150
150 psi Bias Spring
R
200
200 psi Bias Spring
R
270
270 psi Bias Spring
R
M25
25 bar Bias Spring
CV08-20_Order