Transcription of Backflow Reduced Prevention Pressure Zone Devices …
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Backflow Reduced Prevention Pressure Zone Devices …
Phone: 800-EJP-24HR (357-2447) Fax: 207-582-5637 IBackflow Prevention Devices Reduced Pressure Zone Backflow PreventersWatts High Capacity Relief Series 909 (RPZ) Backflow Preventer Series 909 protects against back-si-phonage and backpressure with both checks fouled. The principle is simple, but it s used to solve a complex safety problem. The Series 909 is the only Backflow preven-ter available that provides protection against simultaneous back-siphonage and back Pressure patented built-in vacuum relief is designed around the air-in/water-out principle. The valve has two channels: one for air, one for water. When the relief valve opens, one channel admits air to the top of the Reduced Pressure zone. The other channel then drains to atmosphere. Therefore, if both check valves foul and simultaneous negative and positive backpressures develop, the relief valve will stop potential Backflow by providing high capacity relief.
Reduced Pressure Zone Backflow Preventers Watts “High Capacity Relief” Series 909 (RPZ) Backflow Preventer “Series 909 protects against back-si-phonage and backpressure with both checks fouled.” The principle is simple, but it’s used to solve a complex safety problem. The Series 909 is the only backflow preven-
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