Patent ID: 6874761
Filing Date: 2005-04-05
Classification: F16K

Abstract:
1. A sleeve valve assembly comprising: a valve body; a fluid passage through the valve body having an inlet end and an outlet end; a valve seat defined within the fluid passage; a stem housing extending radially from the valve body; a sleeve axially slidable within the fluid passage and having an upstream end, a downstream end, and an axial flow passage in communication with the inlet end and the outlet end of the fluid passage; a stem pivot housed within the stem housing; a valve stem pivotally mounted at the stem pivot and partly extending through the stem housing, the valve stem being actuable to slide the sleeve between an open position with the downstream end spaced from the valve seat and a closed position with the downstream end borne against the valve seat to selectively control fluid flow through the flow passage to the outlet end; and a convoluted boot sealed tightly to the valve stem and captured by a part of the stem housing at the stem pivot.