NOTICE: Product images may vary from the actual item due to differences in size or configuration options.

The Wilkins 34-720A is a 3/4-inch pressure vacuum breaker assembly designed to protect potable water systems from backsiphonage in irrigation applications.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Pressure: 150 PSI
• Maximum Working Temperature: 110°F
• Notable Certifications: ASSE 1020, UPC, CSA B64.1.2
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 12-720A: 1/2 Inches size
• 1-720A: 1 Inches size
• 114-720A: 1 1/4 Inches size
• 112-720A: 1 1/2 Inches size
• 2-720A: 2 Inches size

Materials:

• Cast Bronze (ASTM B584) main valve body
• Stainless Steel fasteners (300 Series)
• Stainless Steel springs (300 Series)
• Silicone elastomers
• Buna Nitrile elastomers
• Polypropylene polymers
• POM Acetal (Delrin) polymers

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted at a minimum of 12 inches above the highest piping or outlet downstream of the device. Install with adequate drain and sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged. A pressure vacuum breaker cannot be installed where back-pressure could occur or where spillage of water from vent could cause damage.

Standards Compliance:

ASSE Listed 1020; UPC Listed; CSA Certified B64.1.2; Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

Features & Benefits:

• Backsiphonage Protection: Prevents contaminated water from entering the potable water supply in irrigation systems where potential health hazards exist.
• Durable Construction: Cast bronze body built to ASTM B584 standards with stainless steel fasteners and springs ensures long-lasting performance.
• Easy Maintenance: Full-port ball shut-off valves allow in-line maintenance and testing without removing the device from the line.
• High-Pressure Rating: Supports maximum working pressure of 150 PSI with hydrostatic test pressure rated at 300 PSI for demanding applications.

FAQ

Q: What is the minimum installation height required for the Zurn 34-720A?

A: The assembly must be installed at least 12 inches above the highest piping or outlet downstream of the device to ensure proper operation.

Q: Can the Wilkins 34-720A be used in applications with back-pressure?

A: No, this pressure vacuum breaker is not suitable for installations where back-pressure could occur. It is designed only for backsiphonage protection.

Q: Is the Zurn 34-720A suitable for potable water applications?

A: No, this assembly is designed for non-potable applications only, specifically to protect potable water systems from contamination in irrigation installations.

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