The Zurn Wilkins 375 Reduced Pressure Principle Backflow Preventer provides high hazard protection for all applications. The flanged, epoxy coated ductile iron body is available with multiple shut-off valve options for installation versatility.
Features and Benefits
Short lay length for small space installation.
NRS, OS&Y, or Butterfly shut-off valves available.
Available in flanged, grooved, or grooved X flanged end connections for installation versatility.
Ideal for any backflow replacement.
Utilizes Zurn Wilkins low headloss Compound Check for reliable and superior performance.
No threads or taps in body or cover, eliminating exposure to corrosion.
Single access cover reduces down time.
No threads or taps in body or cover, eliminating exposure to corrosion.
Typical Application
Designed for installation on potable water lines to protect against both back siphonage and backpressure of contaminated water into the potable water supply. Reduced Pressure Zone Device Assembly shall provide protection where a potential health hazard exists. (High Hazard).
Zurn Wilkins - 375L - Customer Installation
Standards Compliance
Australian Watermark and Standards Mark
UL Classified
FM Approved
Technical Data
Operating Parameters
Max. Working Water Pressure: 1200kPa
Max. Working Temperature: 60°C
Hydrostatic Test Pressure: 2400kPa
End Connections: Flanges to AS2129
Materials
Main Valve Body Ductile Iron ASTM A536 Grade 4
Access Covers Ductile Iron ASTM A536 Grade 4
Coatings Fusion Epoxy
Fasteners Stainless Steel 300 Series
Internals Stainless Steel 300 Series, Noryl™
Seal Ring EPDM
O-ring Buna Nitrile
Springs Stainless Steel 300 Series
Sensing Line Stainless Steel, Braided Hose
Flow Characteristics
MODEL 375 RPZ 65mm, 80mm & 100mm (STANDARD & METRIC)
Zurn Wilkins - 375L-65mm, 80mm,100mm - Flow Rates
MODEL 375 RPZ 150mm, 200mm, 250mm (STANDARD & METRIC)
Local codes shall govern installation requirements. To be installed in accordance with the manufacturers’ instructions and the latest edition of the Plumbing Code of Australia and/or AS/NZS 3500. 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.
