Valves - Directional Controls - Check Valve

CV12-21

CHECK VALVE

Overview

Description

The CV12-21 is a screw-in, cartridge style, hydraulic check valve for use as a blocking or load-holding device

Operation

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

Features

  • Hardened seat for long life and low leakage. Optional bias springs for back-pressure application flexibility. Low check mass for anti-cavitation applications. Cost-effective cavity.

Ratings

Pressure Ratings
Pressure rating
240 bar (3500 psi)
Flow Ratings
Maximum internal leakage
5 drops/min At 240 bar (3500 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 fluorocarbon 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 90 °C (-40 to 194 °F)

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

Unit weight
0.16 kg (0.37 lb)
Internal wetted surface area
134 cm² (20.7 in²)

Performance

CV12-21_Perf_Chrt

Dimensions

CV12-21_Dim_Dwg

Materials

Materials

Cartridge: Weight: 0.18 kg. (0.40 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Installation Specifications

Cavity
VC12-2
Cartridge installation torque
44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK12-2X-B X = seal option

Order Code

POSITION
CODE
DESCRIPTION
CV12-21-H-J-R
H
Line Body
H
0
No Body
H
10T
Aluminum SAE 10
H
12T
Aluminum SAE 12
H
16T
Aluminum SAE 16
H
12TD
Ductile Iron SAE 12
H
16TD
Ductile Iron SAE 16
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
J
U
PPDI Urethane
R
Spring
R
6
6 psi Bias Spring
R
26
26 psi Bias Spring
R
56
56 psi Bias Spring
CV12-21_Order