Patent ID: 6098659
Filing Date: 2000-08-08
Classification: F16K,Y10T

Abstract:
A combined directional and flow control valve comprising:(a) a valve body having a longitudinal flow passageway formed therethrough between a first and second passageway opening in longitudinal alignment;(b) the first passageway opening leading through the flow passageway to a flapper tensioned by a spring, the flapper covering an entrance opening to the valve body, the flapper opening only inwardly towards an exit opening from the valve body;(c) the flapper having an elastomeric seal on side edges to prevent leakage around the entrance opening;(d) a rotatable plug housing with a front face at the exit opening, the plug housing axially connected to a means for rotating the plug housing mounted outside the valve body; and(e) an elastomeric seal between the front face of the rotatable plug housing and the exit opening to prevent leakage, so that a flow of liquid can flow in only one direction from the entrance opening through the exit opening when the rotatable plug housing is at least partially open.