The Wilkins 12-760 is a dual check valve backflow preventer with intermediate atmospheric vent designed for boiler fill water lines, protecting against backsiphonage and backpressure.

Key Specifications:

• Size: 1/2 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 210°F
• Notable Certifications: ASSE 1012; CSA B64.3
• Threaded Connections: ANSI B1.20.1

Other Related Variants:

• 34-760: 3/4 Inches model size

Materials:

• Forged brass main valve body
• EPDM elastomers (FDA approved)
• Buna Nitrile elastomers (FDA approved)
• Stainless steel springs (300 Series)

Typical Installation:

Under certain conditions, the Zurn 12-760 will spill water from the vent port. Provisions must be made to collect this spillage through an air gap or other means. The vent port should never be directly piped into a drainage ditch, sewer or pump. Under no circumstances should the vent port or drain line be plugged. Local codes shall govern installation requirements. To be installed in accordance with the manufacturers' installation instructions and the latest edition of the Uniform Plumbing Code. The installation shall be made so that no part of the unit can be submerged.

Standards Compliance:

CSA Certified B64.3; ASSE Listed 1012

Features & Benefits:

• Dual Protection: Protects against both backsiphonage and backpressure of polluted water into potable water supply.
• Durable Construction: Forged brass body with stainless steel springs ensures long-lasting performance and reliability.
• Intermediate Atmospheric Vent: Provides additional protection with automatic venting capability for safe boiler fill line operation.
• Certified Compliance: ASSE 1012 and CSA B64.3 certified for quality assurance and code compliance.

FAQ

Q: Can the vent port be connected directly to a drain line?

A: No, the vent port should never be directly piped into a drainage ditch, sewer or pump. Provisions must be made to collect spillage through an air gap, and under no circumstances should the vent port be plugged.

Q: Can the Wilkins 12-760 be installed in a submerged location?

A: No, the installation must be made so that no part of the unit can be submerged. The vent port must remain open and accessible per plumbing code requirements.

Q: What is the maximum working pressure for the Zurn 12-760?

A: The maximum working water pressure is 175 PSI, with a maximum working water temperature of 210°F and emergency back pressure temperature of 250°F.

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