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Reduced Pressure Zone Backflow Preventer

Conbraco Industries
Apollo valves

A Reduced Pressure Zone Device (RPZD, RPZ or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs may also be known as reduced pressure principle backflow prevention devices, or reduced pressure zone assemblies.An RPZD is considered suitable for high hazard applications, that is, where the consequence of backflow into the water supply would cause significant harm. They are considered suitable because they prevent both backflow and back-siphonage, because of a redundant design (even with two check valves broken the device still provides protection), and because they are testable to verify correct operation.

40-200-T2S Series

Reduced Pressure Principle Assembly, Stainless Steel, 1/4" to 1"
Reduced Pressure Zone Backflow Preventer

4A-200/4ALF-200 Series

Reduced Pressure Principle Assembly, Bronze Body, Modular Cartridge Checks with replaceable seats & Reversible Silicone Seat Discs, 1/2" to 2" with ball valve shutoffs with SS handles + trim
Reduced Pressure Zone Backflow Preventer

4ALF-200 LBF Series

Lead Free - Domestic Stainless Steel Body 2-1/2"-8", FDA Fusion Bonded Epoxy Ductile Iron 10" & 12". Short Inline Configuration, Center Stem Guided TriForce™ Check Valves for Low Pressure Drop. Butterfly, OSY, NRS Shutoff Options. 2-1/2"- 12".
Reduced Pressure Zone Backflow Preventer

4AN Valve Setter

Heavy Duty, FDA Fusion Bonded Epoxy Ductile Iron Valve Setter in 2-1/2" to 12".

4AN-200/4ANLF-200 Series

Reduced Pressure Principle Assembly in a Bronze Space-Saving "n" configuration using the modular cartridge checks of the 4A Series. Available in 3/4" and 1" sizes with Ball Valve Shutoffs ; featuring stainless steel handles and nuts.
Reduced Pressure Zone Backflow Preventer

4ANLF-200 LBF Series

Lead Free - Domestic Stainless Steel Body 2-1/2"-8", FDA Fusion Bonded Epoxy Ductile Iron 10" & 12". Flow Configurations in Vertical Up/Vertical Down, or Vertical Up/Vertical Up. Center Stem Guided TriForce™ Check Valves for Low Pressure Drop. Butterfly, OSY, NRS Shutoff Options. 2-1/2"-12".
Reduced Pressure Zone Backflow Preventer