The Wilkins 112-975XL is a 1-1/2-inch reduced pressure principle backflow assembly designed to protect against both backsiphonage and backpressure of contaminated water into the potable water supply.

Key Specifications:

• Size: 1 1/2 Inches
• Maximum Working Pressure: 175 PSI
• Maximum Working Temperature: 180°F
• Notable Certifications: ASSE 1013, UL, cUPC
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 34-975XL: 3/4 Inch version
• 1-975XL: 1 Inch model
• 114-975XL: 1-1/4 Inch model
• 2-975XL: 2 Inch version

Materials:

• Cast Bronze body per ASTM B584
• Cast Bronze access covers per ASTM B584
• Stainless Steel 300 Series fasteners
• Stainless Steel 300 Series springs
• Silicone elastomers
• Buna Nitrile elastomers
• Noryl™ internal polymers
  

Typical Installation:

The Zurn 112-975XL requires installation 12 to 30 inches above grade with adequate drainage. Indoor installations require an air gap adapter. The assembly must be installed so that no part of the unit can be submerged and with sufficient side clearance for testing and maintenance.

Standards Compliance:

ASSE 1013; cUPC; UL; C-UL; CSA B64.4; AWWA C511; USC Foundation for Cross Connection Control; NYC MEA 425-89-M VOL 3

Features & Benefits:

• High Hazard Protection: Protects potable water from backsiphonage and backpressure in non-potable water applications.
• Durable Construction: Cast bronze body with stainless steel fasteners and springs ensures long-lasting reliability.
• Easy Maintenance Access: Allows access to checks for maintenance without removing device from the line.
• Full-Port Ball Valves: Supplied standard with QT ball valves for optimal flow and shut-off capability.

FAQ

Q: What is the installation height requirement for the Wilkins 112-975XL?

A: The assembly must be installed 12 to 30 inches above grade with adequate drainage to ensure proper operation and compliance.

Q: Can the Zurn 112-975XL be used for indoor applications?

A: Yes, but indoor installations require an air gap adapter to prevent potential water damage.

Q: Does the 112-975XL require removal from the line for maintenance?

A: No, the design allows access to checks for maintenance without removing the device from the line, simplifying servicing.

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