SMC (6850090) 685 Series PVC NSF Check Valve ; 1/2"FNPT x 1/2"FNPT Buna - Pack of 3
SMC 6850090 PVC Check Valve – 3-Pack
The SMC 685 Series check valve prevents reverse flow in residential and light commercial water filtration systems. Built with NSF-certified PVC body and Buna-N seals, this valve installs inline with standard 1/2" female NPT threads on both ends. Three-pack configuration provides spares or coverage for multi-stage installations.
Technical Details
| Model Number | SMC 6850090 |
| Series | 685 Series |
| Body Material | PVC (NSF Certified) |
| Seal Material | Buna-N (Nitrile) |
| Connection Type | 1/2" FNPT x 1/2" FNPT |
| Thread Standard | Female NPT (National Pipe Thread) |
| Certification | NSF Compliant |
| Package Quantity | 3 Valves |
System Integration
The SMC 6850090 check valve is compatible with reverse osmosis systems, water filtration setups, and any application requiring backflow prevention with 1/2" NPT threaded connections. Commonly installed between RO membrane housings and storage tanks, or between booster pumps and pre-filter stages. Works with most residential and light commercial water treatment equipment using standard half-inch plumbing. Buna-N seals are suitable for potable water applications at typical operating temperatures.
SMC 685 Series check valves are field-proven components in thousands of water treatment installations across North America.
SMC 6850090 PVC Check Valve – 3-Pack
The SMC 685 Series check valve prevents reverse flow in residential and light commercial water filtration systems. Built with NSF-certified PVC body and Buna-N seals, this valve installs inline with standard 1/2" female NPT threads on both ends. Three-pack configuration provides spares or coverage for multi-stage installations.
Technical Details
| Model Number | SMC 6850090 |
| Series | 685 Series |
| Body Material | PVC (NSF Certified) |
| Seal Material | Buna-N (Nitrile) |
| Connection Type | 1/2" FNPT x 1/2" FNPT |
| Thread Standard | Female NPT (National Pipe Thread) |
| Certification | NSF Compliant |
| Package Quantity | 3 Valves |
System Integration
The SMC 6850090 check valve is compatible with reverse osmosis systems, water filtration setups, and any application requiring backflow prevention with 1/2" NPT threaded connections. Commonly installed between RO membrane housings and storage tanks, or between booster pumps and pre-filter stages. Works with most residential and light commercial water treatment equipment using standard half-inch plumbing. Buna-N seals are suitable for potable water applications at typical operating temperatures.
SMC 685 Series check valves are field-proven components in thousands of water treatment installations across North America.
Original: $39.99
-65%$39.99
$14.00Description
SMC 6850090 PVC Check Valve – 3-Pack
The SMC 685 Series check valve prevents reverse flow in residential and light commercial water filtration systems. Built with NSF-certified PVC body and Buna-N seals, this valve installs inline with standard 1/2" female NPT threads on both ends. Three-pack configuration provides spares or coverage for multi-stage installations.
Technical Details
| Model Number | SMC 6850090 |
| Series | 685 Series |
| Body Material | PVC (NSF Certified) |
| Seal Material | Buna-N (Nitrile) |
| Connection Type | 1/2" FNPT x 1/2" FNPT |
| Thread Standard | Female NPT (National Pipe Thread) |
| Certification | NSF Compliant |
| Package Quantity | 3 Valves |
System Integration
The SMC 6850090 check valve is compatible with reverse osmosis systems, water filtration setups, and any application requiring backflow prevention with 1/2" NPT threaded connections. Commonly installed between RO membrane housings and storage tanks, or between booster pumps and pre-filter stages. Works with most residential and light commercial water treatment equipment using standard half-inch plumbing. Buna-N seals are suitable for potable water applications at typical operating temperatures.
SMC 685 Series check valves are field-proven components in thousands of water treatment installations across North America.
