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Features EPDM seal for superior performance over mechanical bellows
ZB400B-3NL
Safely manage excess surface water and protect hardscapes from flooding and damage with the 5 in
Cast Iron Body with Protective Coating: Heavy-duty
Watts 800M4-FR-SH 3/4 - Part of the 800M4FR Series ZA100F-6NH Features EPDM seal for superiorThis 3 4 inch freeze resistant pressure vacuum breaker backflow preventer helps prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O ring seal, a lightweight plastic disc float, a built in relief valve to protect the internal components and