Watts AquaLock - Large Diameter Union Check Valve 8851-2j03-b323 while the QMP521 3

while the QMP521 3

Everything needed for typical hook-up is included—tubing

5 inch sizing fits most housings

This cartridge is compatible with Watts Intelifil IF-SM-SCIG010B and fits any standard 10-inch Big Blue housing with 4

Watts AquaLock - Large Diameter Union Check Valve 8851-2j03-b323 while the QMP521 3The Watts AquaLock Large Diameter Union Check Valve prevents backflow in residential and commercial water filtration systems with a reliable, tool free connection design. Compatible with copper, CPVC, PEX, LDPE, MDPE, HDPE, and polypropylene tubing across a wide range of pipe sizes from 1 4" to 2" NPT. SPECIFICATIONS Watts AquaLock Check Valve Core Specs Brand Watts Water AquaLock series Product Line AquaLock Union check valve Valve Type Check Valve