Poppet Check Valves -Adjustable Cracking Pressure
Check Valves
The CPA Series check valves feature adjustable cracking pressures, which allows designers and installer to fine tune cracking pressures to meet changing system requirements.
Features
- MAWP: Up to 3000 psig (206 bar)
- Temperature: -10 to 375° F (-23 to 190° C)
- Flow Coefficient: up to 1.20
- Body Materials: 316 SS and Brass
- Seat Materials KFM, NBR
- Cracking Pressures: 3 to 600 psig. (0.206 to 41.3 bar)
- End Connections: MNPT, FNPT, Male and Female BSPT
Our website contains the most popular CPA Series Check Valve configurations - more configurations are available. To specify other configurations, please contact SSP Customer Service.
Part # |
CAD |
Body Material |
Connection 1 - Type |
Connection 1 - Size |
Connection 2 - Type |
Connection 2 - Size |
O-ring Material |
Cracking Pressure |
Production Category |
Product Descriptions |
Cv |
End Connection Type |
Stem Material |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4CPA4MRT-3-316 |
CAD
N/A 
|
Body Material N/A 316 SS | Connection 1 - Type N/A Male BSPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A Male BSPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 1 | Product Descriptions N/A Male ISO Tapered Check Valve | Cv N/A 0.35 | End Connection Type N/A Male British Standard Pipe Tapered | Stem Material N/A 0 |
| 4CPA4PF-150-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 150 to 350 psig | Production Category N/A 1 | Product Descriptions N/A Female NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Female National Pipe Thready by Female National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PF-3-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 1 | Product Descriptions N/A Female NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Female National Pipe Thready by Female National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PF-50-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 50 to 150 psig | Production Category N/A 1 | Product Descriptions N/A Female NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Female National Pipe Thready by Female National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PM-150-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 150 to 350 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PM-3-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PM-350-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 350 to 600 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PM-50-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 50 to 150 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8MRT-3-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A Male BSPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Male BSPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 1 | Product Descriptions N/A Male ISO Tapered Check Valve | Cv N/A 1.20 | End Connection Type N/A Male British Standard Pipe Tapered | Stem Material N/A 0 |
| 8CPA8PM-150-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 150 to 350 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8PM-3-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8PM-350-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 350 to 600 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8PM-50-316 |
CAD
N/A
|
Body Material N/A 316 SS | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 50 to 150 psig | Production Category N/A 1 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4MRT-3-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A Male BSPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A Male BSPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 4 | Product Descriptions N/A Male ISO Tapered Check Valve | Cv N/A 0.35 | End Connection Type N/A Male British Standard Pipe Tapered | Stem Material N/A 0 |
| 4CPA4PM-150-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 150 to 350 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PM-350-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 350 to 600 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PM-3-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4PM-50-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 50 to 150 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8MRT-3-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A Male BSPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A Male BSPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 4 | Product Descriptions N/A Male ISO Tapered Check Valve | Cv N/A 1.20 | End Connection Type N/A Male British Standard Pipe Tapered | Stem Material N/A 0 |
| 8CPA8PM-150-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 150 to 350 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8PM-350-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 350 to 600 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8PM-3-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 8CPA8PM-50-M |
CAD
N/A
|
Body Material N/A Alloy 400 | Connection 1 - Type N/A MNPT | Connection 1 - Size N/A 1/2 in | Connection 2 - Type N/A MNPT | Connection 2 - Size N/A 1/2 in | O-ring Material N/A FKM | Cracking Pressure N/A 50 to 150 psig | Production Category N/A 4 | Product Descriptions N/A Male NPT Check Valve | Cv N/A 1.20 | End Connection Type N/A Male National Pipe Thread | Stem Material N/A 0 |
| 4CPA4MRT-3-B |
CAD
N/A
|
Body Material N/A Brass | Connection 1 - Type N/A Male BSPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A Male BSPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 3 to 50 psig | Production Category N/A 1 | Product Descriptions N/A Male ISO Tapered Check Valve | Cv N/A 0.35 | End Connection Type N/A Male British Standard Pipe Tapered | Stem Material N/A 0 |
| 4CPA4PF-150-B |
CAD
N/A
|
Body Material N/A Brass | Connection 1 - Type N/A FNPT | Connection 1 - Size N/A 1/4 in | Connection 2 - Type N/A FNPT | Connection 2 - Size N/A 1/4 in | O-ring Material N/A FKM | Cracking Pressure N/A 150 to 350 psig | Production Category N/A 1 | Product Descriptions N/A Female NPT Check Valve | Cv N/A 0.35 | End Connection Type N/A Female National Pipe Thready by Female National Pipe Thread | Stem Material N/A 0 |
