| 摘要 |
An air break is disclosed comprising a water inlet for connection to a water supply, a water outlet for connection to a wafer outlet pipe, at least one air inlet situated between the water inlet and the water outlet, and an outlet flow restrictor. Preferably, the outlet flow restrictor comprises a tapered inset situated, in use, in the water outlet or water outlet pipe. The air break preferably further comprises a shroud adapted to cover the air inlet(s). The air break of the invention advantageously prevents back flow in water systems, in particular, portable water systems. |
