Patent ID: 6409149
Filing Date: 2002-06-25
Classification: F16K

Abstract:
A valve assembly comprising:a) a housing including an interior space and a pair of openings through which fluid can enter and exit the interior space; b) a first valve body movable within the interior space between an opened position allowing fluid to pass through a first of the openings and a closed position wherein the first valve body seals the first opening; c) a second valve body movable within the interior space between an opened position allowing fluid to pass through a second of the openings and a closed position wherein the second valve body seals the second opening; and d) an annular cover movable within the interior space between a first position wherein the cover protects a valve seat of the second opening and a second position wherein the cover is spaced from the valve seat such that the second valve body can engage the valve seat and seal the second opening, wherein the annular cover is movable in a parallel direction with respect to an axis of the second opening.