Check valve and method of fabrication
AssigneeFlomatic Corporation
InventorBo Andersson
Life of this patent
Estimating the term…
Abstract
A check valve comprising a casing having a flange extending circumferentially around the inner periphery of the body. The flange is constructed by first drilling from a first direction at a diameter less than the predetermined diameter and then drilling from an opposite direction at the predetermined diameter. The flange defines a valve aperture for receiving a poppet valve. The poppet valve includes a stem including a plurality of legs each having an outer peripheral surface facing the valve aperture. The outer peripheral surface of the valve legs have rounded or recessed edges such that only a center portion of the outer peripheral surface of the legs can come into contact with the inner surface defining the valve aperture.
Claims19
A check valve comprising:
- a body configured to permit fluid to flow therethrough, said body including a flange extending circumferentially around the inner periphery of the body, the flange having an inner surface defining a valve aperture;
- and
- a poppet valve moveably mounted within the valve aperture, said poppet valve including a plurality of guide legs extending through the valve aperture, each of the plurality of guide legs having an outer peripheral surface facing the inner surface defining the valve aperture, wherein outer edges of the outer peripheral surfaces of the plurality of guide legs are rounded such that only a center portion of the outer peripheral surface of each guide leg can come into contact with the inner surface defining the valve aperture.
A check valve comprising:
- a body configured to permit fluid to flow therethrough, said body including a flange extending circumferentially around the inner periphery of the body, the flange having an inner surface defining a valve aperture;
- and
- a poppet valve moveably mounted within the valve aperture, said poppet valve including a plurality of guide legs extending through the valve aperture, each of the plurality of guide legs having an outer peripheral surface facing the inner surface defining the valve aperture, wherein each of the outer peripheral surfaces of the plurality of legs have a convex wear surface extending towards the inner surface defining the valve aperture, wherein outer edges of the convex wear surface do not come into contact with the inner surface.
A check valve comprising:
- a body configured to permit fluid to flow therethrough, said body including a flange extending circumferentially around the inner periphery of the body, the flange having an inner surface defining a valve aperture;
- and
- a poppet valve moveably mounted within the valve aperture, said poppet valve including a plurality of guide legs extending through the valve aperture, each of the plurality of guide legs having an outer peripheral surface facing the inner surface defining the valve aperture, wherein outer edges of the outer peripheral surfaces of the plurality of guide legs are recessed such that only a center portion of the outer peripheral surface of each guide leg can come into contact with the inner surface defining the valve aperture.
Dependencies are inferred from the claim text.