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This 1/2 inch lead free copper silicon alloy reduced pressure zone backflow preventer assembly is designed to prevent the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements
The pressure relief is set at 125 psi (861
Integral seepage pan and heavy-duty slotted grate for robust surface drainage
UPC - 098268795370
Watts 957-OSY-FS 4 - Part of the 957 Series dura-skrim-selector This 1/2 inch lead freeThis 4 inch reduced pressure zone assembly backflow preventer help stop the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazard exists. This extremely compact and lighter than a traditional designed assembly is approved for horizontal installation as long as the backflow assembly is installed in accordance with the direction of the flow arrow. This assembly consists of a stainless steel body with a quick access