Watts 957ZRPDA-OSY-GPM 4 - Part of the 957RPDA Series ZC100F-8NH Once in position use the

Once in position use the lifting straps to lower the grate back into the inlet and your ready to filter again

Watts 4 IN Model ICV-125-2-2-T

Sensing Passage O-ring Kit Type First Check Kit Lead Free YES Product Group BACKFLOW KITS UPC - 098268384253

It includes a nickel bronze adjustable round strainer

ZB1910-3IP

Watts 957ZRPDA-OSY-GPM 4 - Part of the 957RPDA Series ZC100F-8NH Once in position use theThis 4 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Extremely compact and lighter than traditional designs it is approved for horizontal Z pattern installation.