Importance

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Abstract

A valve designed to bleed air in to the suction line of a pool when the suction pressure exceeds a predetermined value. The valve is housed in a four port fixture in which the ports are designated as the first, second, third and forth ports. Each port has a central axis with all the central axes lying in a single plane. The central axes of the first and third port lie on a first straight line and the axes of the second and forth port lie on a second straight line. The first and second line cross one another orthogonally which places the first and third ports opposite one another and the second and forth port opposite one another. The second and forth ports each contain an individual moveable element which has a first and a second position. In the first position the moveable element blocks the port. In the second position the port is opened and will admit air into the valve. A resilient element connected between the moveable elements produces a force which urges the moveable elements into their first position where they block their respective ports, but the force produced by the resilient element can be overcome by a predetermined suction force within the valve. Water flows through the valve from the first to third port. A suction level which produces a force on the moveable elements that exceeds the predetermined force will open the second and forth ports and admit air into the valve.

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First Claim