The Zurn Wilkins 975XL2 Reduced Pressure Principle Backflow Preventer provides high-hazard protection for potable water applications. The wye pattern, bronze body provides separate access to each check valve and the relief valve for servicing.
Typical Application
Ideal for use where Lead-Free* valves are required. Designed for installation on potable water lines to protect against both back siphonage and backpressure of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists.
Standard Compliance
Australian Watermark (AS/NZS 2845.1) Approved Lic. 1379
Type Tested AS/NZS 4020 Lic. 20111
Technical Data
Operating Parameters
Max. Working Water Pressure: 1200kPa
Max. Working Temperature: 82 Celsius
Hydrostatic Test Pressure: 2400kPa
Materials
Main Valve Body: Cast Bronze ASTM B 584
Access Covers: Cast Bronze ASTM B 584
Elastomers: Silicone & Buna Nitrile (FDA approved)
Springs: Stainless Steel 300 Series
Flow Characteristics
Technical Specifications
Designed for installation on potable water lines.
Protects against both back siphonage and backpressure of contaminated water into the water supply.
Assembly provides protection where a potential health hazard exists.
The Reduced Pressure Principle Backflow Assembly is Australian Watermark Approved (AZ/NZS 2845.1)
The Reduced Pressure Principle Backflow Preventer is rated to 82°C.
The checks shall be oriented at a 45° angle upward and accessible for maintenance without removing the relief valve or the entire device from the line.
If installed indoors, the installation should be supplied with an air gap and “Y” type strainer.
Unless otherwise specified, the assembly should be mounted at a minimum of 305mm and maximum of 762mm above adequate drains with sufficient side clearance for testing and maintenance.
