Wilkins Backflow Preventers
Deeco's personnel and products comply with NZ Standards NZS2845 and AS4089-2004 and the NZWWA Backflow Code of Practice, with permanent personal certification as cross connection control testers (ABT's & IQP's) and hazard surveyors. Deeco have represented Zurn Wilkins to the NZ market since pioneering the introduction of backflow preventers in the late 1970's.
Wilkins pressure regulator ranges are world leaders with many millions of units in service dating back more than 50 years. With Double Check (type DCV), Dual Check (type BFP), Reduced Pressure (type RPZ) and Single Check backflow preventers, Wilkins' extensive range covers all pressure regulation applications of both potable water supply as well as rural water supply.
Deeco are able to assist you with design, specification, application and technical engineering field support via our product engineers. This support is available from our Auckland, Tauranga, Wellington, Nelson and Christchurch service centres.
For further data on Deeco's Wilkins backflow preventers or technical application data, please Contact Us.
Alternatively, please see the WILKINS/ZURN overseas website for current product details.







Wilkins Model 350
(Sizes 3/4" - 2")
Double Check Valve Assembly
- Removable pressure vessel for cleaning and repair
- Composite pressure vessel minimizes copper theft
- Easily winterized with BOF fitting
- Download the technical brochure
- Repair Instruction Video - 3/4" and 1"
- Repair Instruction Video - 1.125" to 2"

Wilkins Model 350
(Sizes 2.5" to 10")
Lead-Free Double Check Valve Assembly
- Short lay length makes replacement easier
- Compound Check® yields very low headloss
- Available in flanged, grooved, or grooved X flanged
- Low-lead law compliant
- Download the technical brochure
- Repair Instruction Video - 2.5" and 3"
- Repair Instruction Video - 4" and 6"
- Repair Instruction Video - 8" to 10"
Wilkins Model 375
(Sizes 3/4" - 2")
Reduced Pressure Principle Assembly (RPZ)
- Patented removable pressure vessel
- Allows for easy repair and winterization
- Constructed with less Bronze for theft deterrence
- Download the technical brochure
- Repair Instruction Video - 3/4" and 1"
- Repair Instruction Video - 1.125" to 2"
Wilkins Model 375
(Sizes 2.5" to 10")
Lead-Free Reduced Pressure Principle Assembly Backflow Preventer
- Light weight epoxy-coated ductile iron body
- NRS, OS&Y, or Butterfly shut-off valves available
- Utilizes Wilkins low headloss Compound Check®
- Low-lead law compliant
- Download the technical brochure
- Repair Instruction Video - 2.5" and 3"
- Repair Instruction Video - 4" and 6"
- Repair Instruction Video - 8" to 10"
Wilkins Model 350DA
Double Check Detector Assembly
- Compound Check® provides low headloss
- Lowest life cycle costs in the Backflow industry
- Approved in horizontal and vertical positions
- Download the technical brochure
Wilkins Model 705
- Lead-Free Dual Check Valve Assembly
- Lead-free composite body construction
- State lead law compliant
- Protects against backflow of pollutants
- Horizontal or vertical installation
- Zero-lead law compliant
- Special model developed for Deeco/NZ Standards
- Download the technical brochure