The 2" 720A Pressure vacuum breaker assembly protects against back siphonage in high health hazard, non-potable residential and commercial irrigation applications. The 720A includes an approved check valve, vacuum relief, two test cocks and inlet and outlet full port resilient seated shut-off valves. It also features a maximum pressure of 150 psi and a temperature range of 33 degree F to 110 degree F. The corrosion-resistant internal parts and all bronze bonnet and body construction provides added strength and protection against light freezes, while the test cocks on center line of valve allow for installation versatility.