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CH Series check valves offer reliable cracking and resealing in CNG fueling stations, sampling systems, natural gas vehicles and other high-pressure, high-cycle and high-flow applications requiring reliable cracking and resealing in high-pressure and high-flow applications.

Specifications
  • MAWP: Up to 6000 psig (413 bar)
  • Temperature Range: -40 to 400° F (-40 to 204° C)
  • Flow Coefficient: up to 3.25
  • Materials: 316 Stainless Steel, Other materials available
  • Cracking Pressures: 1/3 to 100 psig (0.023 to 6.89 bar)
  • Highly durable metal to metal seal
  • End Connections: Tube fitting, MNPT, FNPT, Male and Female BSPT
  • ECE R110 Approved

Options
Our website contains the most popular CH Series Check Valve configurations - more configurations are available.  To specify other configurations, please contact SSP Customer Service.  Special ordering instructions for the options below are included in the CH Series Catalog.

Cracking Pressures
(Non-standard items are in bold.  Call for availability)

  • 1/3
  • 1
  • 5
  • 10
  • 20
  • 25
  • 50
  • 75
  • 100

O-ring Materials
SSP offers the following O-ring materials.

  • FKM (Standard)
  • NBR
  • NBR3 - Low-temperature Nitrile
  • EP
  • FFKM

Tube Fitting End Connections
SSP offer three tube fitting designs. 

  • Duolok 2-ferrule end connections (Standard).
  • Unilok single-ferrule end connections
  • Griplok dual ferrule end connections
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Items
High pressure check tube fitting end connections.

High-Pressure Check Valves
High pressure check tube fitting end connections.

High-Pressure Check Valves
High pressure check tube fitting end connections.

High-Pressure Check Valves
High pressure check tube fitting end connections.

High-Pressure Check Valves
High pressure check tube fitting end connections.

High-Pressure Check Valves
Description N/A CH Series Check Valve, Alloy 400, 1/8 in Duolok Tube Fitting x 1/8 in Duolok Tube Fitting Cracking Pressure: 10 psig, O-ring Material FKM N/A CH Series Check Valve, Alloy 400, 1/8 in Duolok Tube Fitting x 1/8 in Duolok Tube Fitting Cracking Pressure: 1 psig, O-ring Material FKM N/A CH Series Check Valve, Alloy 400, 1/8 in Duolok Tube Fitting x 1/8 in Duolok Tube Fitting Cracking Pressure: 25 psig, O-ring Material FKM N/A CH Series Check Valve, Alloy 400, 1/4 in Duolok Tube Fitting x 1/4 in Duolok Tube Fitting Cracking Pressure: 10 psig, O-ring Material FKM N/A CH Series Check Valve, Alloy 400, 1/4 in Duolok Tube Fitting x 1/4 in Duolok Tube Fitting Cracking Pressure: 1 psig, O-ring Material FKM
Body Material N/A Alloy 400
Connection 1 - Type N/A Duolok Tube Fitting
Connection 1 - Size N/A 1/8 in N/A 1/8 in N/A 1/8 in N/A 1/4 in N/A 1/4 in
Connection 2 - Type N/A Duolok Tube Fitting
Connection 2 - Size N/A 1/8 in N/A 1/8 in N/A 1/8 in N/A 1/4 in N/A 1/4 in
A N/A 2.31 in N/A 2.31 in N/A 2.31 in N/A 2.44 in N/A 2.44 in
Cv N/A 0.60
O-ring Material N/A FKM
B N/A 1.07 in N/A 1.07 in N/A 1.07 in N/A 1.04 in N/A 1.04 in
Hex N/A 11/16 in
End Connections N/A TF x TF
Cracking Pressure N/A 10 psig N/A 1 psig N/A 25 psig N/A 10 psig N/A 1 psig
Product Descriptions N/A Fractional Tube Fitting