Zurn Wilkins 1-720A 1 in 720A Pressure Vacuum Breaker Assembly

In this review of the Zurn Wilkins 1-720A 1 in 720A Pressure Vacuum Breaker Assembly, the bottom line is simple: this is a solid choice for installers and DIYers who need dependable backsiphonage protection for irrigation and other non-potable systems. The single biggest reason to buy is its combination of reliable performance and installation-friendly features, notably the serial number readable in any installed orientation and test cocks placed on the center line of the valve, which together reduce fitment guesswork and on-site labor time.

Key Features

• Visible Serial Number: The serial number remains readable in any installed orientation, saving time during inspection or service calls.
• Center Line Test Cocks: Test cocks located on the center line allow flexible installation positions and easier pressure testing.
• Corrosion-Resistant Construction: Bronze bonnet and body with corrosion-resistant internals deliver strength and help protect against light freezes.
• Built-In Shut-Offs: Inlet and outlet full port resilient seated shut-off valves make service and replacement straightforward without disassembling piping.
• Approved Protection: ASSE, IAPMO and CSA listings plus university foundation approval mean it meets recognized standards for backsiphonage protection.
• Operational Range: Rated to 150 psi and 33F to 110F, it covers common residential and commercial irrigation conditions.

Who It's For

The 1-720A is aimed at irrigation contractors, facility maintenance teams, and knowledgeable homeowners who need a code-compliant vacuum breaker with durable materials and easy serviceability. Its tapped ball valves and readable serial make it especially useful where inspection access is limited or installs occur in tight mechanical spaces.

It is less appropriate for potable point-of-use protection or applications outside the stated temperature range, and users seeking a unit rated for heavier freezing conditions or different certification sets should evaluate alternatives.

Pros & Cons

Pros

• Reliable backsiphonage protection with multiple listings for code compliance.
• Installation-friendly design reduces labor: center line test cocks and readable serial number in any orientation.
• Robust bronze construction and corrosion-resistant internals for longer life in irrigation use.
• Integrated inlet and outlet shut-off valves simplify maintenance and replacement.

Cons

• Some customers report occasional early leaks or failures, so careful installation and periodic inspection are advised.
• The temperature range limits use where sustained freezing below 33F is common.

Specifications

Model	1-720A Pressure Vacuum Breaker
Nominal Size	1 in
Maximum Pressure	150 psi
Temperature Range	33F to 110F
Body Material	Bronze bonnet and body
Includes	Approved check valve, vacuum relief, two test cocks, inlet/outlet shut-off valves
Certifications	ASSE Listed, IAPMO Listed, CSA Certified, USC Foundation approved

Our Verdict

The Zurn Wilkins 1-720A is a practical, code-compliant vacuum breaker that suits irrigation contractors and savvy homeowners who value durability and easier installation. Its corrosion-resistant construction, readable serial number, and center-line test cocks offer real on-site advantages, making it a good value for systems within its temperature and pressure limits.

Frequently Asked Questions

Is this unit suitable for residential irrigation?
Yes. It is designed for high health hazard, non-potable residential and commercial irrigation applications.

Can it be installed in any orientation?
While the serial number is visible in any orientation and the tapped ball valves allow flexible positioning, follow local codes and the manufacturer's installation guidelines for orientation.

What should be checked during maintenance?
Inspect for leaks at connections and test the test cocks and vacuum relief periodically; address any signs of leakage promptly to avoid failure.