UPGRADED 3/4ft 720A Pressure Vacuum Breaker Assembly - Thick Brass PVB

In this review of the UPGRADED 3/4' 720A Pressure Vacuum Breaker Assembly the bottom line is simple: it is a robust, straightforward backflow preventer built for irrigation and outdoor water systems where durable sealing and pressure resistance matter. The reviewer found the unit's switch to a sealant-based seal and its thickened brass construction to be the single biggest reasons to choose it for residential or light commercial sprinkler and cooling loop protection, especially where systems see variable pressure and the risk of back-siphonage is a concern.

Key Features

• Sealant-based sealing: Uses a durable sealant instead of Teflon tape to reduce deterioration and maintain a reliable seal under sustained pressure.
• Thickened brass body: Heavy brass construction improves corrosion and oxidation resistance for longer service life in outdoor installations.
• High pressure capacity: Rated for use up to 400 PSI, offering confidence in systems that experience high or fluctuating pressure.
• Automatic vacuum break: Automatically admits air when pressure drops to prevent back-siphonage and protect potable supplies.
• Clear flow direction: The unit shows water flow direction regardless of installation orientation, simplifying correct fitting during setup.
• Included installation guidance: Comes with instructions that cover installation and troubleshooting to help installers avoid common errors.

Who It's For

The 3/4' 720A PVB is best for homeowners, landscapers, and light commercial sites that need a compact backflow preventer for sprinkler systems, irrigation lines, or small cooling circuits. Its thickened brass and sealant-based design make it suitable where outdoor exposure and pressure variability are expected.

Those working on very large municipal systems or who require specialty certified assemblies for heavy industrial waterworks should look elsewhere; this unit is aimed at residential and small commercial plumbing and irrigation protection rather than large-scale industrial installations.

Pros & Cons

Pros

• Durable sealant instead of tape reduces the chance of seal failure over time.
• Robust thickened brass body resists corrosion and handles demanding outdoor conditions.
• Automatic vacuum break function reliably protects against back-siphonage when pressure drops.
• High 400 PSI maximum rating provides margin for higher-pressure systems.

Cons

• Unscrewing the valve will destroy the internal PVB seal, so servicing must be done with care or by replacement rather than disassembly.
• Not positioned as a specialty industrial-grade backflow assembly for large municipal applications.

Specifications

Model	720A Pressure Vacuum Breaker Assembly
Connection size	3/4' (in)
Maximum pressure	Max 400 PSI
Body material	Thickened brass
Sealing method	Sealant (do not use Teflon tape)
Primary use	Irrigation, sprinkler and cooling systems
Warranty	18-month warranty

Our Verdict

The UPGRADED 3/4' 720A Pressure Vacuum Breaker Assembly is a sensible, value-oriented choice for residential and small commercial irrigation and sprinkler protection. Its sealant sealing approach and thickened brass construction give practical durability, and the 400 PSI rating offers extra reliability; installers should avoid disassembling the valve to preserve the internal seal.

Frequently Asked Questions

Can this unit be used on a garden irrigation system?
Yes, it is intended for outdoor garden irrigation and sprinkler systems to prevent backflow into the potable supply.

What happens if I unscrew the valve for service?
Unscrewing the valve will destroy the internal PVB seal, so servicing by disassembly is not recommended and replacement may be required.

Is Teflon tape required when installing?
No, the manufacturer specifies using sealant instead of Teflon tape to maintain the designed seal performance.