Zurn Wilkins 1-720a Pvb Review: Performance & Reliability
Protecting your potable water supply from contamination is a critical responsibility for any property owner or facility manager. The Zurn Wilkins 1-720A 1-inch Pressure Vacuum Breaker Assembly stands as a gold standard in backflow prevention technology, offering robust protection against back-siphonage. Engineered for durability and ease of maintenance, this unit ensures that your irrigation or plumbing systems remain compliant with local codes while safeguarding public health. Whether you are upgrading an existing irrigation setup or installing a new system, understanding the nuances of this high-performance assembly is essential for long-term success and peace of mind in your water management strategy.

The 1-720A series is renowned for its reliable internal components and high-quality bronze body construction, which resists corrosion in harsh outdoor environments. By effectively isolating the water supply from potential pollutants, this device provides a necessary barrier that prevents contaminated water from entering the main municipal lines. Its design prioritizes both functional integrity and user accessibility, making it a preferred choice for professionals who demand consistent performance. In this comprehensive review, we will explore the technical specifications, installation considerations, and maintenance requirements that make the Zurn Wilkins 1-720A a standout component in the world of professional-grade plumbing hardware.
| Size | 1 Inch |
| Body Material | Bronze |
| Connection Type | FNPT |
| Max Working Pressure | 150 PSI |
| Temperature Range | 33°F to 110°F |
| Certification | ASSE 1020 |
Superior Engineering and Design
The Zurn Wilkins 1-720A excels through its precision-engineered internal poppet assembly, which ensures a tight seal and consistent operation even under fluctuating pressure conditions. Constructed with a heavy-duty bronze body, this unit is specifically designed to withstand the rigors of outdoor irrigation environments while resisting the corrosive effects of mineral-rich water. The modular design allows for simplified maintenance, enabling technicians to access internal components without removing the entire assembly from the piping system, which significantly reduces downtime during routine inspections or necessary repairs. This focus on long-term durability and serviceability makes it an indispensable asset for maintaining secure and compliant water infrastructure systems.
Reliable Backflow Prevention Performance
When it comes to backflow prevention, the 1-720A provides unmatched reliability by utilizing a spring-loaded poppet that reacts instantly to changes in line pressure. This rapid response mechanism effectively prevents back-siphonage, ensuring that no contaminated irrigation water can ever migrate back into the clean municipal supply lines. The inclusion of test cocks allows for easy verification of the device’s performance, providing peace of mind to property owners and inspectors alike. By choosing this specific model, you are investing in a proven solution that meets rigorous industry standards for safety, efficiency, and operational excellence in diverse residential and commercial water applications. (See Also: Beatbot Sora 10 Pool Robot Review Ultimate Cleaning )
Pros & Cons
Pros
- ✓ Durable bronze body construction
- ✓ Easy access for internal maintenance
- ✓ Meets strict ASSE 1020 standards
- ✓ Reliable poppet sealing mechanism
Cons
- ✗ Requires professional installation expertise
- ✗ Heavy compared to plastic alternatives
- ✗ Needs winterization in cold climates
- ✗ Periodic testing is mandatory annually
Zurn Wilkins 1-720A Buying Guide
Understanding Backflow Prevention
Backflow prevention is vital for maintaining the safety of your home water supply. The Zurn Wilkins 1-720A acts as a critical barrier against back-siphonage, which occurs when negative pressure pulls water backward into the main line. By installing this high-quality assembly, you ensure that irrigation chemicals or stagnant water never contaminate the municipal source. It is an essential component for any responsible property management plan.
Selecting the Right Size
Choosing the correct size for your plumbing system is paramount for optimal flow and pressure regulation. The 1-inch model is specifically designed for standard residential and light commercial irrigation setups, providing the perfect balance between flow capacity and pressure drop. Always verify your pipe diameter before purchase to ensure a seamless fit. Proper sizing prevents unnecessary strain on your pump and irrigation valves.
Material Quality and Longevity
The use of high-grade bronze in the construction of the 1-720A sets it apart from cheaper plastic alternatives. Bronze offers superior resistance to environmental degradation, UV exposure, and physical impact, ensuring the assembly remains functional for many years. Investing in premium materials reduces the frequency of replacements and repairs, ultimately saving you time and effort. Durability is the hallmark of the Zurn brand. (See Also: Pediasure Grow Gain Shake Mix Review )
Installation Best Practices
Professional installation is highly recommended to ensure the device functions correctly according to local plumbing codes. The unit must be installed at least twelve inches above the highest downstream outlet to prevent potential flooding or backflow issues. Using proper thread sealants and ensuring the assembly is level will prevent leaks and mechanical failure. Always consult your local building department for specific regional installation requirements.
Routine Maintenance Requirements
Regular maintenance is the key to extending the lifespan of your vacuum breaker assembly. Annual testing by a certified backflow technician is often required by law to verify the integrity of the internal check valves and poppet. Keeping the unit clear of debris and ensuring the test cocks are properly sealed will keep the system running smoothly. Proactive care prevents costly emergency plumbing repairs.
Frequently Asked Questions
How often should I test my 720A?
You should have your Zurn Wilkins 1-720A tested at least once every year by a certified backflow prevention assembly tester. This ensures that the internal components are sealing correctly and that the device remains compliant with local health and safety regulations regarding your potable water supply system protection. (See Also: Kachava Vanilla Meal Shake Review Nutrition Analyzed )
Can this be installed underground?
No, the 720A pressure vacuum breaker is designed exclusively for above-ground installation. It must be positioned at least twelve inches above the highest downstream piping to function properly and prevent back-siphonage. Installing it below grade or in a pit will cause the device to fail its intended safety function.
Does this unit prevent backpressure?
The 720A is specifically designed to protect against back-siphonage, not backpressure. If your irrigation system is subject to backpressure from pumps or elevated water sources, you may need a different type of backflow preventer. Always verify your specific system requirements with a local plumbing professional before making a final purchase decision.
What is the purpose of the test cocks?
The test cocks are small ports located on the body of the assembly that allow a technician to attach testing equipment. These ports are essential for checking the pressure differential across the check valve and the opening pressure of the air inlet. They make routine certification and troubleshooting much faster and easier.
Is winterization necessary for this device?
Yes, winterization is absolutely critical if you live in an area that experiences freezing temperatures. Water left inside the bronze body can freeze, expand, and crack the housing, leading to catastrophic failure. You must drain the unit and leave the test cocks partially open during the winter months to prevent damage.
Final Verdict
The Zurn Wilkins 1-720A is an exceptional choice for those prioritizing water safety and system reliability. Its robust bronze construction and proven design ensure long-term performance in demanding irrigation environments. While it requires professional installation and annual testing, the peace of mind provided by its superior backflow protection is invaluable. It remains a top-tier investment for any serious property owner.
Recommended For You



