Description : Swing type check valve simple construction and only four nonstandard parts included. Such simple machinery means reliable operation and low price. Small and the face to face length is only 10% of the traditional Non-return valves light one the whole weight is 20% of the traditional. It looks beautiful in the pipeline and just like a thick gasket and ia invisible from outside. Lifting the upper lifting ring can dismantle the valve easily.
AQV ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. The ball is spring-loaded to help keep it shut. And another designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow
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