Part #'s for this item: WS15X10078, 7329594, 7386986 - Fits several brands of water softeners Authentic OEM Bypass Valve From Your Original Systems Manufacturer Soft Water Supply includes (2) extra clips and (2) extra o-rings with every purchase of the valve Blending valve allows the user to adjust the softness level in their water to their desired feel. This valve only fits the large 1" high flow softener models. See images for the proper fit on your unit. Blending Bypass Valve - WS15X10078, 7329594, 7386986 - Authentic OEM Factory Part - Bundled by Soft Water Supply with (2) Clips and (2) O-Rings - Bypasses and Adjusts Soft Water Level and Feel