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.
- Replaceable check disc rubber
- Extremely compact design
- 70% Lighter than traditional designs
- 304 (Schedule 40) stainless steel housing & sleeve
- Groove fittings allow integral pipeline adjustment
- Patented torsion spring checks provide lowest pressure loss
- Unmatched ease of serviceability
- Bottom mounted cast stainless steel relief valve
Literature
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Select options below to identify the UPC, Order Code, and Repair Kit for a specific 957ISR