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The Wilkins 1-460XL is a 1-inch spill resistant pressure vacuum breaker designed for indoor and outdoor point-of-use applications to protect potable water systems from backsiphonage.

Key Specifications:

• Size: 1 Inches
• Maximum Working Pressure: 150 PSI
• Maximum Working Temperature: 180°F
• Notable Certifications: ASSE 1056, cUPC, CSA B64.1.3
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 12-460XL: 1/2 Inch model size
• 34-460XL: 3/4 Inch model size

Materials:

• Cast Bronze main valve body meeting ASTM B 584 standards
• Silicone elastomers (FDA Approved)
• Buna Nitrile elastomers
• Polypropylene polymers (FDA Approved)
• POM Acetal (Delrin®) polymers
• Stainless Steel springs (300 Series)

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be installed in accordance with the manufacturers' instructions and the latest version of the Uniform Plumbing Code. The critical level mark on the assembly shall be mounted at a minimum of 12 inches (305mm) above the highest downstream piping or outlet. Install with sufficient side clearance for testing and maintenance. The installation shall ensure that no part of the assembly can be submerged.

Standards Compliance:

ASSE Listed 1056; cUPC Listed; CSA Certified B64.1.3; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; NSF/ANSI/CAN 61 and 372

Features & Benefits:

• Spill-Resistant Design: Separate diaphragm seals the air inlet from the water supply preventing spillage during start-up and operation, making it ideal for indoor installations.
• Low-Lead Compliance: Zurn 1-460XL meets NSF/ANSI/CAN 372 requirements with less than 0.25% weighted average lead content for safe drinking water applications.
• Replaceable Modular Cartridge: Thermoplastic modular cartridge design simplifies maintenance and reduces downtime with easy component replacement.
• Continuous Pressure Protection: Designed for use under constant pressure to protect against backsiphonage where a potential health hazard exists.

FAQ

Q: What is the minimum installation height requirement for the Zurn 1-460XL?

A: The critical level mark on the assembly must be mounted at a minimum of 12 inches (305mm) above the highest downstream piping or outlet to ensure proper protection.

Q: Can the 1-460XL be used in back-pressure conditions?

A: No, a spill-resistant pressure vacuum breaker cannot be installed where back-pressure could occur. It is designed specifically for backsiphonage protection only.

Q: What accessories are available for the Model 1-460XL?

A: Available accessories include complete repair kits, rubber-only repair kits, Model 1260XL water hammer arrester, and QT-SET Quick Test Fitting Set for testing and maintenance.

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