RP-500 Operations, Maintenance and Troubleshooting Guide A.R.I. • 3
The RP-500 Reduced Pressure Backfl ow Preventer consists of:
• Two independent-acting spring-loaded check valves - an inlet and an outlet valve.
• An automatic differential Relief Valve (located in the “zone” between the check valves) .
• Two resilient seated shut off valves – one on the inlet, the other on the outlet.
• Four test cocks.
PRODUCT FEATURES
• Compact, lightweight size makes it easy and quick to install.
• Requires only a Phillips-head screwdriver to disassemble and reassemble – no special tools needed .
• Durable, made of non-corrosive plastic thermal resin material:
- Withstands the toughest environments.
- Unlike a brass Backfl ow Preventer, the RP-500 is less susceptible to vandalism and theft.
- UV resistant – endures heat and direct sun.
• Low head loss – optimizes energy, saving energy costs.
The RP-500 is approved by the following Standards Authorities:
Approved under :
USA : NSF61 (Drinking water), ASSE 1013, AWWA C511, Approved by the Foundation for Cross
Connection Control and Hydraulic Research at the University of Southern California, Listed for Uniform
Plumbing Code.
Australia : AS4020 (Drinking water), Watermark AS2845.1.
France : ACS.
APPLICATIONS
To protect potable water lines and other installations against backsiphonage and backpressure of
contaminated water.
For irrigation system and water handling applications.
SPECIFICATIONS
• Operating pressure: up to 150 psi
• Operating temperature: up to 110º F
• Valve sizes: ½”, ¾”, 1”, 1¼”, 1½”, 2”
Features, Applications and Specifi cations