Anti-syphon flow control valve

摘要: A liquid flow control valve having a seat and plug for engaging said seat, being connected to pressure responsive device, such as diaphragm, movement therewith, opened closed by forces acting on opposite sides of an anti-syphon located below diaphragm directing air into when suction occurs at the inlet seat; comprising annular array flaps which through openings in body valve. Said can be arranged also provide barrier reverse from exit its inlet. pilot operated type or manually operated.