SMC (5722390) 426 Series PVC NSF Check Valve ; 1/8" FPT x 1/8" FPT VITON
426 Series PVC NSF Check Valve
The SMC 426 Series check valve ensures one-way flow in reverse osmosis and water filtration systems, preventing backflow contamination and protecting upstream components. Built with NSF-certified PVC and a durable VITON O-ring, this compact valve delivers chemical resistance and reliable sealing across a wide range of water treatment applications.
Engineered for Critical Flow Control
Backflow Prevention
Spring-loaded check mechanism prevents reverse flow, protecting membranes and filters from contamination
NSF Certified Materials
PVC body and internal components meet NSF standards for safe use in potable water systems
VITON Seal Technology
High-performance fluoroelastomer O-ring resists chlorine, ozone, and temperature extremes better than standard rubber
1/8" FPT Threaded
Female pipe thread on both ends for easy integration into compact manifold assemblies and low-flow applications
Chemical Resistant
PVC construction withstands exposure to chlorinated water, sanitizers, and common treatment chemicals
Compact Footprint
Low-profile design fits tight spaces in point-of-use systems, booster pump assemblies, and inline installations
Where This Check Valve Fits
The SMC 5722390 check valve is commonly installed in reverse osmosis systems to prevent membrane backwash, in DI and laboratory water systems to isolate stages, and on booster pump discharge lines to maintain pressure. The 1/8" FPT connection size matches SMC manifold blocks, compact RO housings, and laboratory water equipment. Compatible with drinking water, deionized water, and most chemical treatment streams within PVC and VITON service limits.
SMC valves have been trusted in water treatment and fluid control applications for decades, offering consistent performance in demanding installations.
426 Series PVC NSF Check Valve
The SMC 426 Series check valve ensures one-way flow in reverse osmosis and water filtration systems, preventing backflow contamination and protecting upstream components. Built with NSF-certified PVC and a durable VITON O-ring, this compact valve delivers chemical resistance and reliable sealing across a wide range of water treatment applications.
Engineered for Critical Flow Control
Backflow Prevention
Spring-loaded check mechanism prevents reverse flow, protecting membranes and filters from contamination
NSF Certified Materials
PVC body and internal components meet NSF standards for safe use in potable water systems
VITON Seal Technology
High-performance fluoroelastomer O-ring resists chlorine, ozone, and temperature extremes better than standard rubber
1/8" FPT Threaded
Female pipe thread on both ends for easy integration into compact manifold assemblies and low-flow applications
Chemical Resistant
PVC construction withstands exposure to chlorinated water, sanitizers, and common treatment chemicals
Compact Footprint
Low-profile design fits tight spaces in point-of-use systems, booster pump assemblies, and inline installations
Where This Check Valve Fits
The SMC 5722390 check valve is commonly installed in reverse osmosis systems to prevent membrane backwash, in DI and laboratory water systems to isolate stages, and on booster pump discharge lines to maintain pressure. The 1/8" FPT connection size matches SMC manifold blocks, compact RO housings, and laboratory water equipment. Compatible with drinking water, deionized water, and most chemical treatment streams within PVC and VITON service limits.
SMC valves have been trusted in water treatment and fluid control applications for decades, offering consistent performance in demanding installations.
Description
426 Series PVC NSF Check Valve
The SMC 426 Series check valve ensures one-way flow in reverse osmosis and water filtration systems, preventing backflow contamination and protecting upstream components. Built with NSF-certified PVC and a durable VITON O-ring, this compact valve delivers chemical resistance and reliable sealing across a wide range of water treatment applications.
Engineered for Critical Flow Control
Backflow Prevention
Spring-loaded check mechanism prevents reverse flow, protecting membranes and filters from contamination
NSF Certified Materials
PVC body and internal components meet NSF standards for safe use in potable water systems
VITON Seal Technology
High-performance fluoroelastomer O-ring resists chlorine, ozone, and temperature extremes better than standard rubber
1/8" FPT Threaded
Female pipe thread on both ends for easy integration into compact manifold assemblies and low-flow applications
Chemical Resistant
PVC construction withstands exposure to chlorinated water, sanitizers, and common treatment chemicals
Compact Footprint
Low-profile design fits tight spaces in point-of-use systems, booster pump assemblies, and inline installations
Where This Check Valve Fits
The SMC 5722390 check valve is commonly installed in reverse osmosis systems to prevent membrane backwash, in DI and laboratory water systems to isolate stages, and on booster pump discharge lines to maintain pressure. The 1/8" FPT connection size matches SMC manifold blocks, compact RO housings, and laboratory water equipment. Compatible with drinking water, deionized water, and most chemical treatment streams within PVC and VITON service limits.
SMC valves have been trusted in water treatment and fluid control applications for decades, offering consistent performance in demanding installations.
