초록 ▼

An elastomeric sleeve is placed under axial compression in a pinch valve assembly. The axial compression of the sleeve eliminates any crevices with end members that engage opposed end walls of the valve body. Further, axial compression extends cycle life of the valve by maintaining the sleeve in a n

An elastomeric sleeve is placed under axial compression in a pinch valve assembly. The axial compression of the sleeve eliminates any crevices with end members that engage opposed end walls of the valve body. Further, axial compression extends cycle life of the valve by maintaining the sleeve in a non-tensile relationship. Mechanical gripping between enlarged flanges defined at opposed ends of the sleeve is also enhanced through axial compression of the sleeve. A positive, visual indication of valve open and closed positions is provided by an indicator stem extending outwardly from an actuator body.

대표청구항 ▼

A valve comprising: a body having an opening extending between first and second end walls for communication with an inlet defined in a first end member and an outlet defined in a second end member, said end members being disposed on opposite sides of said body; a flexible member closely received in

A valve comprising: a body having an opening extending between first and second end walls for communication with an inlet defined in a first end member and an outlet defined in a second end member, said end members being disposed on opposite sides of said body; a flexible member closely received in said opening, said flexible member having first and second enlarged flanges abuttingly engaging said first and second end members and a bore extending through said flexible member having a diametrical dimension substantially identical to said inlet and outlet, said flexible member having an unstressed, first axial dimension greater than a second axial dimension defined between said body end walls; means for interconnecting said first and second end members together and axially compressing said flexible member; and, an actuation member disposed in said body for selective reciprocation toward and away from said flexible member and adapted for close receipt through a pinch opening in said body disposed generally perpendicular to said body opening.