High-Pressure Check Valves
Check Valves
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
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
Part # |
CAD |
Body Material |
Connection 1 - Type |
Connection 1 - Size |
Connection 2 - Type |
Connection 2 - Size |
Cv |
O-ring Material |
Cracking Pressure |
Production Category |
Handle Type |
Handle Color |
Product Descriptions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CH8-G8-100-316 |
CAD
N/A 
|
Body Material N/A 316 SS | Connection 1 - Type N/A Griplok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Griplok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 100 psig | Production Category N/A 3 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-G8-10-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Griplok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Griplok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 10 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-G8-1-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Griplok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Griplok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 1 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-G8-25-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Griplok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Griplok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 25 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-G8-50-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Griplok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Griplok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 50 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U6-1/3-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 3/8 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 3/8 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 1/3 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U6-10-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 3/8 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 3/8 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 10 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U6-1-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 3/8 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 3/8 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 1 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U6-25-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 3/8 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 3/8 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 25 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U6-50-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 3/8 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 3/8 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 75 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U6-5-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 3/8 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 3/8 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 5 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U6-75-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 3/8 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 3/8 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 75 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U8-1/3-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 1/3 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U8-100-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 100 psig | Production Category N/A 3 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U8-10-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 10 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U8-1-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 1 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U8-25-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 25 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH8-U8-50-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Unilok Tube Fitting | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Unilok Tube Fitting | Connection 2 - Size N/A 1/2 in | Cv N/A 2.15 | O-ring Material N/A FKM | Cracking Pressure N/A 50 psig | Production Category N/A 2 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Fractional Tube Fitting |
| CH16-12PF-1/3-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 3/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 3/4 in | Cv N/A 3.25 | O-ring Material N/A FKM | Cracking Pressure N/A 1/3 psig | Production Category N/A 4 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Female NPT |
| CH16-12PF-10-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 3/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 3/4 in | Cv N/A 3.25 | O-ring Material N/A FKM | Cracking Pressure N/A 10 psig | Production Category N/A 4 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Female NPT |
| CH16-12PF-1-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 3/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 3/4 in | Cv N/A 3.25 | O-ring Material N/A FKM | Cracking Pressure N/A 1 psig | Production Category N/A 4 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Female NPT |
| CH16-12PF-25-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 3/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 3/4 in | Cv N/A 3.25 | O-ring Material N/A FKM | Cracking Pressure N/A 25 psig | Production Category N/A 4 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Female NPT |
| CH16-12PF-5-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 3/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 3/4 in | Cv N/A 3.25 | O-ring Material N/A FKM | Cracking Pressure N/A 5 psig | Production Category N/A 4 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Female NPT |
| CH16-12PM-1/3-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 3/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 3/4 in | Cv N/A 3.25 | O-ring Material N/A FKM | Cracking Pressure N/A 1/3 psig | Production Category N/A 4 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Male NPT |
| CH16-12PM-10-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 3/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 3/4 in | Cv N/A 3.25 | O-ring Material N/A FKM | Cracking Pressure N/A 10 psig | Production Category N/A 4 | Handle Type N/A 0 | Handle Color N/A 0 | Product Descriptions N/A Male NPT |
