Valves - Directional Controls - Check Valve

CV10-28

CHECK VALVE WITH THERMAL RELIEF

Overview

Description

CV10-28 is a screw-in, cartridge-style hydraulic check valve for use as a blocking or load-holding device. The cartridge incorporates a low flow thermal relief valve intended to prevent cylinder damage resulting from temperature-induced pressure intensification

note: the thermal relief feature is not intended for use in dynamic pressure limiting applications

Operation

The CV10-28 allows flow from port 1 to port 2, while blocking oil flow in the opposite direction. If the pressure at port 2 exceeds the thermal relief setting, a small amount of oil will be allowed to pass from port 2 to port 1, preventing cylinder damage from pressure intensification

Features

  • Hardened seat for long life and low leakage.
  • Industry-common cavity.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Proof pressure:
  • 390 bar (5700 psi)
Flow Ratings
Flow rating:
  • 45 lpm (12 gpm)
Maximum internal leakage:
  • 0.25 ml/min (5 drops/min) At 241 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 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 hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 20/18/14 per ISO 4406
Unit weight:
  • 0.13 kg (0.28 lb)
Internal wetted surface area:
  • 287 cm² (17.5 in²)
CV10-28_Perf_Chrt
CV10-28_Dim_Dwg

Materials

Cartridge: Weight: 0.08 kg (0.18 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O‑rings and polyester elastomer 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.

Cavity:
Cartridge installation torque:
  • 32.6 to 35.4 N-m (24 to 26 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK10-2X-T X = seal option
CV10-28_Order
POSITION
CODE
DESCRIPTION
CV10-28-H-J-R/S
H
Line Body
H
0
No Body
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
4B
Aluminum BSPP 1/2" (4)
H
4BD
Ductile Iron BSPP 1/2" (4)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
65
65 psi Bias Spring
S
Thermal Relief Setting
S
5
500 psi Thermal Relief
S
10
1000 psi Thermal Relief
S
20
2000 psi Thermal Relief
S
25
2500 psi Thermal Relief
S
30
3000 psi Thermal Relief
S
40
4000 psi Thermal Relief
S
45
4500 psi Thermal Relief