Apollo 4A Series Pressure Vacuum Breaker Assembly | 3/4 in. & 1 in. Size:1" As the drainage pipes fill

As the drainage pipes fill and build up slight pressure

Forged high-carbon steel construction

the cassette distributes conditioned air from a central overhead location instead of using wall space for a highwall unit

3/8" barbed and threaded discharge port

This is a mechanically-activated

Apollo 4A Series Pressure Vacuum Breaker Assembly | 3/4 in. & 1 in. Size:1" As the drainage pipes fillApollo 4A Series Pressure Vacuum Breaker Assembly Brand: Apollo (Conbraco) SKUs: 4A504A2F, 4A505A2F Product Overview The Apollo 4A Series pressure vacuum breaker assembly is designed to help protect a potable water supply from backsiphonage in applications where this type of backflow protection is approved. It is commonly installed on irrigation or other water lines that can be exposed to a loss of supply pressure, which may otherwise allow downstream