Water Supply

RP-501 | Backflow Preventer


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  • Product Drawings:
  • Install & Maintenance:
150 psi 1/2”, 3/4”, 1”,1 ¼”, 1 ½”, 2”


The RP-501 Backflow Preventer is designed to supply maximum protection against back flow caused by negative pressure or backpressure. Backflow may cause infiltration of chemicals, fertilizers and/or other pollutants into potable water systems. The RP-501 is reliable and easily maintained, without the need for special tools. The RP-501 is built with two independent, easily replaceable capsulated spring-loaded check valves. A revolutionary, internal Reduced Pressure Zone, located between the check valves, ensures protection and reliable performance of the relief valve.

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Product Features

  • The RP-501 protects against backflow caused by backpressure or back siphonage.
  • Reduced Pressure Zone provides added protection against contamination.
  • Approved by the leading Standards Authorities worldwide.
  • UV resistant
  • Lightweight and economical; easy to maintain, no need for special tools except for a screwdriver.
  • Available in sizes: 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", threaded NPT.

Materials and Corrosion Protection

  • Made of durable, non-corrosive plastic thermal resin material.
  • Stainless steel screws and springs.
  • The shut-off valves  made of Composite materials

Application Range

  • Operating pressure up to 150 psi.
  • Maximum operating temperature: 33°F to 110°F.
  • For irrigation systems, water handling applications, potable water lines and all other installations requiring protection against back siphonage and backpressure of contaminated liquids.


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Last Updated on: Wednesday, 31 October 2018