SMC (6940090) 694 Series PVC NSF Check Valve ; 1/4"FNPT x 1/4"FNPT Buna Blue And White (F-44750LH-12) 1.0 - 10 GPM; 3/4" MPT; IL This element is widely specified

This element is widely specified by OEMs and system integrators for new builds and as a retrofit upgrade for older systems using lower-performing membranes

🔧 Always purchase a compatible safety brine valve assembly when replacing an old brine tank

Ultraviolet sterilization

Model Number FU-WDF-888-AB Manufacturer Watts Premier Series 888 Series Euro Designer Air Gap Type Non-Air Gap (NAG) Spout Action 360° Swivel Installation Hardware All mounting hardware and instructions included Warranty 1 Year Limited Manufacturer Warranty

SMC (6940090) 694 Series PVC NSF Check Valve ; 1/4"FNPT x 1/4"FNPT Buna Blue And White (F-44750LH-12) 1.0 - 10 GPM; 3/4" MPT; IL This element is widely specifiedThe SMC 6940090 is a 1 4" FNPT threaded PVC check valve from the 694 Series, NSF certified with a Buna N seal for reliable one way flow protection in residential and commercial water systems. This compact valve prevents backflow and protects pumps, filters, and RO membranes from reverse pressure damage. SPECIFICATIONS SMC 694 Series Check Valve Technical Details Model Number SMC 6940090 Series 694 Series Connection Type 1 4" FNPT x 1 4" FNPT Body