The Wilkins 12-35XLCH is an atmospheric vacuum breaker designed to protect potable water lines against backsiphonage contamination where potential health hazards exist.

Key Specifications:

• Size: 1/2 Inches
• Maximum Working Water Pressure: 125 PSI
• Maximum Working Water Temperature: 180°F
• Notable Certifications: ASSE 1001, CSA, IAPMO
• Finish: Rough Chrome Plate

Other Related Variants:

• 34-35XL: 3/4 Inches model
• 1-35XL: 1 Inches model
• 14-35XLVCH: 1/4 Inches vertical inlet/outlet with rough chrome

Materials:

• Lead-Free Cast Brass Body
• Silicone Elastomers (FDA approved)
• Buna Nitrile Elastomers (FDA approved)
• ULTEM™ Polymers (NSF Listed)

Typical Installation:

To be installed in accordance with the manufacturer's instructions and the latest edition of the Uniform Plumbing Code. The assembly shall be mounted at a minimum of 6 inches above the highest point of discharge with sufficient side clearance for maintenance. Because the Zurn 12-35XLCH is not to be used under continuous pressure, never place a shut-off or check valve downstream of the device. The installation shall be made so that no part of the unit can be submerged and shall not be in a concealed or inaccessible location, or where the venting of water from the device, during normal functioning, may be deemed objectionable.

Standards Compliance:

ASSE Listed 1001; CSA Certified; IAPMO Listed; NSF/ANSI 372 Certified by IAPMO R&T (0.25% max. weighted average lead content)

Features & Benefits:

• Lead-Free Construction: Certified to NSF/ANSI 372 with 0.25% maximum weighted average lead content, ideal for potable water applications.
• Backflow Protection: Protects potable water supply against backsiphonage of contaminated water where potential health hazards exist.
• Easy Maintenance: Accessible for maintenance without removing the device from the service line.
• Durable Materials: Features FDA-approved silicone and Buna Nitrile elastomers with NSF Listed ULTEM™ polymers for long-lasting performance.

FAQ

Q: What is the minimum installation height required for the Zurn 12-35XLCH?

A: The atmospheric vacuum breaker must be installed at a minimum of 6 inches above the highest point of discharge with sufficient side clearance for maintenance.

Q: Can a shut-off valve be installed downstream of this vacuum breaker?

A: No, because this assembly is not designed for use under continuous pressure, never place a shut-off or check valve downstream of the device.

Q: What are the maximum pressure and temperature ratings for this unit?

A: The maximum working water pressure is 125 PSI and the maximum working water temperature is 180°F.

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