초록 ▼

A slide gate valve having a flangeless housing clamped between the ends of two pipelines which housing has an inner chamber, enlarged between the ends of the pipelines, for accommodating a stationary valve plate. An associated displaceable valve plate is provided with an annular insert having approx

A slide gate valve having a flangeless housing clamped between the ends of two pipelines which housing has an inner chamber, enlarged between the ends of the pipelines, for accommodating a stationary valve plate. An associated displaceable valve plate is provided with an annular insert having approximately the same inside diameter as the adjacent pipeline on the discharge side in the housing, against which insert the stationary valve plate is supported as a seal in a small annular area opposite the sealing surface between the insert and the pipeline. The remaining area of the stationary valve plate is free of support from both the insert and the housing.

대표청구항 ▼

A slide gate valve for pipeline, comprising: (a) a stationary valve plate; (b) a displaceable valve plate associated with said stationary plate; (c) a flangeless housing adapted for being clamped between the ends of two pipelines, said housing having an inner chamber which is axially enlarged betwee

A slide gate valve for pipeline, comprising: (a) a stationary valve plate; (b) a displaceable valve plate associated with said stationary plate; (c) a flangeless housing adapted for being clamped between the ends of two pipelines, said housing having an inner chamber which is axially enlarged between the two pipeline ends for accommodating said stationary and displaceable valve plates, and slightly radially enlarged on a discharge side thereof for receiving said plates, but having an inside diameter on an inlet side thereof substantially the same as that of the adjacent pipeline end; and (d) an annular insert having substantially the same inside diameter as an adjacent pipeline, said insert being provided on a discharge side within said flangeless housing, having a pipeline sealing surface between itself and said adjacent pipeline, said a plate sealing surface between itself and said stationary plate, said plate sealing surface having a substantially smaller area than said pipeline sealing surface so as to reduce forces transmitted to said stationary plate through said insert during on-site clamping of said housing between the ends of two pipelines; wherein said stationary plate is supported against said insert as a seal in a small annular area of said stationary plate in contact with said plate sealing surface, and further wherein the remaining area of said stationary valve plate and said insert define a clearance therebetween.