Anti-syphon fluid control valve apparatus and method

摘要: An anti-syphon valve comprises a base pipe having inlet and outlet legs seat, disposed at the top of within stem post, which can be rotated selectively to block leg (closed position) or open it (open position). A metering peg extends from post into receptacle in seat. Inlet passages corresponding are above float located passage allows fluid flow position while blocking closed position. Vent provided enable communication atmosphere handle is on rotate latter place spline arrangment between requires lifted engage before rotating it.