Air eliminator valve
AssigneeDresser Europe S. A.
InventorAlan George Butcher
Life of this patent
Estimating the term…
Abstract
An air eliminator valve for automatically collecting and venting air and other gases included in flowing liquid. The valve has a chamber in which air collects, a float in the chamber and a vent valve at the top operated by the float to vent the chamber when the liquid level falls. The vent valve has a convex or concave seat with apertures therein and is sealed by a flexible diaphragm which is peeled progressively from the seat to open the valve. The diaphragm may be annular and fixed at its outer periphery, being flexed by a coupling at its center, or may be fixed at the center and flexed by a coupling at its periphery.
Claims6
An air eliminator valve comprising a housing, a chamber defined by said housing and having an inlet and an outlet for coupling the chamber to a liquid supply line, the valve being disposed in use so that air collects in the upper part of the chamber, a float in the chamber movable along the axis of the chamber which extends through the top of the chamber, an air release valve at the top of the chamber, the air release valve comprising a valve seat having a seating surface generated by a generatrix rotated 360.degree. around said axis and intersecting said axis and extending outwardly therefrom with the portion of the generatrix intersecting said axis being at an angle to said axis, said valve seat surface having thruflow apertures therein, a flexible diaphragm of generally annular configuration for superposed placement against the seating surface of the valve seat to seal the vent apertures, means securing one end of said diaphragm while leaving the other end free and a coupling connecting the free end of the diaphragm with the float, whereby when the float falls it peels the diaphragm away from its placement position against the seat surface to uncover the vent apertures and allow venting of the air.
Dependencies are inferred from the claim text.