Check Valves
Series 200 - NPT Check Valves /
Pressure Relief Valves
May combine #212 & #214
Or use the same NPT
on both ends.
Easily mounted in-line and ideal for liquid or air, our Series 200 NPT male and female check valves and pressure relief valves eliminate the leak prone adapter seen in other valves by combining the fitting and check valve in one piece.
Compression fitting Model #224 is available for use with Models #212 and #214 on inlet and outlet sides. Model #204 is Smart Products only female pipe thread (NPT).
Note: Dimensions on this page are based on Polypropylene material. These are typically held to a +/- 0.005" tolerance. Keep in mind different plastics have different shrink rates and may vary from these tolerances.
All plastic body material recommendations are based on standard corrosion resistant and compatibility guides. In a continuing pledge to provide customers with quality products, Smart Products requires that products are customer-tested and approved for each application-specific use.
View a PDF of all our valves and pumps.
For assistance
or to order call
(800) 338-0404.
Key Features:
- Used for liquid or air.
- Easily mounted in-line.
- Eliminates leak prone adapter by combining fitting and check valve in one.
- Combine #212 and #214 end fittings or use the same NPT on both ends.
Materials Key
Body Materials
| Polypropylene | P |
| Nylon | N |
| Acrylic | C |
| Acetal (Delrin®) | A |
| PVDF | K |
| Polycarbonate | T |
| Ultem® | U |
| ABS | M |
Click here to learn more about Plastic Body Materials.
O-Ring Materials
| Buna-N | B |
| Ethylene-Propylene | E |
| Viton® | V |
| Silicone | S |
| Fluorosilicone | F |
| Aflas | A |
| Kalrez® | K |
† Not available with springs less than .5 PSI