1 in 720A Pressure Vacuum Breaker Assembly - Thick Brass Backflow

In this review of the 1 in 720A Pressure Vacuum Breaker Assembly the bottom line is simple: this is a robust backflow preventer for homeowners and small commercial irrigation systems that need dependable anti-siphon protection under high pressure. The reviewer found the thickened brass construction and the upgraded sealant-based sealing method to be the primary reasons to buy, because they improve corrosion resistance and long-term sealing stability where Teflon tape would normally degrade. This product is best for installs where pressure resistance and a foolproof vacuum break are required.

Key Features

• Upgraded Sealing Material: Uses a long-lasting sealant instead of Teflon tape to reduce deterioration and maintain a stable seal under pressure.
• Thickened Brass Construction: The metal top cover and brass body deliver superior corrosion and oxidation resistance for outdoor irrigation use.
• High Pressure Rating: Built to withstand high piping pressures so it can be used in demanding sprinkler and cooling system applications.
• Automatic Vacuum Break: Automatically opens an air inlet when pressure drops to break the vacuum and prevent contaminated water from siphoning back.
• Easy Installation: Flow direction is visible regardless of mounting orientation and the included instructions cover installation and troubleshooting.
• Warranty Support: Includes an 18-month warranty and seller support for post-sale questions.

Who It's For

This vacuum breaker is a good fit for homeowners installing or upgrading outdoor garden irrigation systems, small commercial sprinkler systems, and other low-complexity water systems like cooling loops that need reliable backflow prevention. Plumbers and installers who prefer a metal-bodied, pressure-rated PVB will appreciate the thicker brass and metal top cover.

Those who should look elsewhere include users needing integrated multi-valve backflow assemblies or potable water installations requiring different certification standards - this is a single 1 in PVB designed for irrigation and similar uses, not a multi-component backflow assembly for complex municipal hookups.

Pros & Cons

Pros

• Durable thickened brass body resists corrosion and oxidation for outdoor use.
• Sealant-based sealing improves long-term pressure stability compared with Teflon tape.
• Automatic vacuum break function provides reliable anti-siphon protection during pressure drops.

Cons

• The PVB seal is destroyed if the valve is unscrewed, so servicing requires care and may need replacement parts or professional attention.

Specifications

Our Verdict

The 1 in 720A Pressure Vacuum Breaker is a solid choice for anyone who needs a single-line anti-siphon device that holds up to higher pressures and outdoor conditions. The combination of thickened brass construction and a sealant-based seal makes it a practical, cost-effective solution for irrigation and similar applications where durability and reliable vacuum breaking are priorities.

Frequently Asked Questions

Can this PVB be used on a sprinkler system?
Yes, it is designed for sprinkler and irrigation systems and for other water systems such as cooling circuits.

What happens if I unscrew the valve?
Unscrewing the valve will destroy the PVB seal, so disassembly is not recommended without replacement parts or professional service.

Is Teflon tape required?
No, the product uses a sealant instead of Teflon tape, which the manufacturer says improves long-term sealing performance.