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Wilkins 375 RPZ Backflow Preventer 3/4 in. | WK375-075

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Sales Price $450.35 Our Price $640.00 You save 30%

Wilkins 375 Reduced Pressure Principle Assembly 3/4 in. with Ball Valves

  •  Size: 3/4 in.
  • End connections Threaded FNPT
  •  Type: 375 Reduced Pressure Principle Assembly

Features & Benefits

Designed for installation on water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists.

  • Sizes: 3/4"
  • Maximum working water pressure 175 PSI
  • Maximum working water temperature 180°F
  • Hydrostatic test pressure 350 PSI
  • End connections Threaded FNPT ANSI B1.20.1

Product Details

The Reduced Pressure Principle Backflow Preventer shall be ASSE® Listed 1013, rated to 180°F and supplied with full port ball valves. The main body shall be Nylon and the seat disc elastomers shall be silicone. If installed indoors, the installation shall be supplied with an air gap adapter. The Reduced Pressure Principle Backflow Preventer shall be a ZURN WILKINS
Model 375.

Typical Installation
Local codes shall govern installation requirements. To be installed in accordance with the manufacturers’ instructions and the latest edition of the Uniform Plumbing Code. Unless otherwise specified, the assembly shall be mounted at a minimum of 12” (305mm) and a maximum of 30” (762mm) above adequate drains with sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged.


  • Housing Reinforced Nylon, FDA approved
  • Fasteners Stainless Steel, 300 Series
  • Elastomers Silicone (FDA Approved) Buna Nitrile (FDA Approved)
  • Internals Delrin, Nylon, NSF ListedSprings Stainless steel, 300 series
  • Ball Valves Cast Bronze, ASTM B 584
  • Struts Stainless Steel, 300 Series
More Information
Brand Wilkins
Warranty 1 Year
Brochure (536.96 kB)