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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Part #

CAD

Body Material

Connection 1 - Type

Connection 1 - Size

Connection 2 - Type

Connection 2 - Size

Cv

O-ring Material

Cracking Pressure

Quantity
CH4-D2-10-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 1/8 in N/A Duolok Tube Fitting N/A 1/8 in N/A 0.60 N/A FKM N/A 10 psig
CH4-D2-1-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 1/8 in N/A Duolok Tube Fitting N/A 1/8 in N/A 0.60 N/A FKM N/A 1 psig
CH4-D2-25-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 1/8 in N/A Duolok Tube Fitting N/A 1/8 in N/A 0.60 N/A FKM N/A 25 psig
CH4-D4-10-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A 0.60 N/A FKM N/A 10 psig
CH4-D4-1-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A 0.60 N/A FKM N/A 1 psig
CH4-D4-25-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A 0.60 N/A FKM N/A 25 psig
CH8-D6-10-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 3/8 in N/A Duolok Tube Fitting N/A 3/8 in N/A 2.15 N/A FKM N/A 10 psig
CH8-D6-1-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 3/8 in N/A Duolok Tube Fitting N/A 3/8 in N/A 2.15 N/A FKM N/A 1 psig
CH8-D6-25-M N/A CAD Icon (for items table) N/A Alloy 400 N/A Duolok Tube Fitting N/A 3/8 in N/A Duolok Tube Fitting N/A 3/8 in N/A 2.15 N/A FKM N/A 25 psig
CH4-D2-10-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 1/8 in N/A Duolok Tube Fitting N/A 1/8 in N/A 0.60 N/A FKM N/A 10 psig
CH4-D2-1-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 1/8 in N/A Duolok Tube Fitting N/A 1/8 in N/A 0.60 N/A FKM N/A 1 psig
CH4-D2-25-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 1/8 in N/A Duolok Tube Fitting N/A 1/8 in N/A 0.60 N/A FKM N/A 25 psig
CH4-D4-10-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A 0.60 N/A FKM N/A 10 psig
CH4-D4-1-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A 0.60 N/A FKM N/A 1 psig
CH4-D4-25-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 1/4 in N/A Duolok Tube Fitting N/A 1/4 in N/A 0.60 N/A FKM N/A 25 psig
CH8-D6-10-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 3/8 in N/A Duolok Tube Fitting N/A 3/8 in N/A 2.15 N/A FKM N/A 10 psig
CH8-D6-1-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 3/8 in N/A Duolok Tube Fitting N/A 3/8 in N/A 2.15 N/A FKM N/A 1 psig
CH8-D6-25-HC N/A CAD Icon (for items table) N/A Alloy C-276 N/A Duolok Tube Fitting N/A 3/8 in N/A Duolok Tube Fitting N/A 3/8 in N/A 2.15 N/A FKM N/A 25 psig
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