Advanced Valves 15mm (1/2") Vacuum Breaker

Double seal, locked and loaded, Advanced Valves’ AD-VB geyser Vacuum Breaker is available in 3 sizes – 15mm, 22mm and ¾ BSP.

The second stage device which is a yellow visual indicator, forms part of the patent and is always in the closed position. This means there are two seals that are held closed by springs at all times, making this a double locked and loaded vacuum breaker.