VALVE WITH AIR-GAP PROVISION TO PREVENT BACKFLOW

摘要

A valve is provided having an air gap to protect against backflow in a fluid system. The valve can also be used to control fluid flow while providing such backflow protection. The valve can be used with e.g., a reverse osmosis water filtration system and/or other systems. By incorporating both backflow protection and flow control into the same device, efficiencies in space, complexity, and/or installation time are provided.

主权项

1. A valve for preventing backflow, comprising:
a main body comprising
a first primary inlet;a primary outlet;a secondary inlet;a secondary outlet;a secondary fluid channel connecting the secondary inlet with the secondary outlet, the secondary fluid channel defining a gap connected with an ambient that is exterior to the valve; and a rotatable valve element positioned within the main body, the valve element selectively rotatable between a position placing the first primary inlet in fluid communication with the primary outlet and a position disconnecting the first primary inlet from fluid communication with the primary outlet.