957ISR
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Reduced Pressure Zone Devices (Grooved), DN100-DN250
Series 957ISR reduced pressure zone backflow preventer assemblies provide protection to the potable water system from contamination in accordance with national plumbing codes. Series 957ISR are normally used in health hazard applications for protection against backsiphonage or backpressure.
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Select options below to identify the UPC, Order Code, and Repair Kit for a specific 957ISR