SMC (6850090) 685 Series PVC NSF Check Valve ; 1/2” FNPT x 1/2" FNPT Buna 20 inch x 4.5 inch Big Blue Filters2700 Schedule-40 DWV standpipe

Schedule-40 DWV standpipe

Single Spray

Blue & White Quick Loc adapters ensure compatibility with standard pipe threading

The 16-inch diameter footprint fits most mechanical rooms and utility closets where under-sink tanks are impractical

but always keep a towel handy to catch residual water in the filter body when disconnecting

SMC (6850090) 685 Series PVC NSF Check Valve ; 1/2” FNPT x 1/2" FNPT Buna 20 inch x 4.5 inch Big Blue Filters2700 Schedule-40 DWV standpipeThe SMC 6850090 from the 685 Series is a PVC check valve rated for potable water systems, featuring 1 2" female NPT connections on both ends and a Buna N seal. This NSF certified component prevents backflow in residential and light commercial reverse osmosis systems, ensuring one way flow protection where you need it. SPECIFICATIONS SMC 685 Series Check Valve Technical Details Model Number SMC 6850090 Series 685 Series Body Material PVC (Polyvinyl