Zurn 1-975XLS Reduced Pressure Principle Assembly with 90° Elbows

The Zurn Wilkins 1-975XLS is a 1" reduced pressure zone (RPZ) backflow preventer, approved for high health hazard protection.

The Wilkins 975XLSE Reduced Pressure Principle Backflow Preventer provides high hazard protection for non-potable water applications and is furnished with 90° street elbows providing a short installed length.

Features

• Street elbows on inlet and outlet provide narrow footprint
• Can be configured as "N" or "Z" shape
• Smaller foot print allow for smaller enclosures

Common Questions

What hazard level is this RPZ approved for?

It is rated for high health hazard (toxic) cross-connections, so it may be used on either high or low hazard service.

Does this assembly have to be tested every year?

Yes. This is a field-testable assembly with 4 test cocks. Most water authorities require it to be tested and certified by a licensed backflow tester at installation and annually thereafter.

Does the relief valve need a drain?

Yes. An RPZ relief valve is designed to discharge, and it can dump a large volume of water, so it must never be installed in a pit or below grade and the discharge must be piped to an adequate drain through an air gap. The air gap fitting is not included with this model and is ordered separately.

Specifications

• Type: Reduced Pressure Principle Assembly with 90° Elbows
• Size: 1"
• Application: Domestic Water
• Backflow Protection: Both
• MPN: 1-975XLS
• Assembly Type: RPZ
• Hazard Protection Level: High Health Hazard
• Field Testable: Yes
• Number of Test Cocks: 4