FLOW CONTROL DEVICE

摘要

This invention relates to a flow control device (10) which includes a housing (400) defining a chamber into which at least two spaced apart passages (402) extend. The device (10) further includes a valve member (40) having a body (42) mounted for angular displacement within the chamber, the body defining an inlet opening (44), an outlet opening (46) and a flow passage (48) connecting the two in flow communication. The body (42) of the valve member (40) is angularly displaceable between a first position, in which the inlet and outlet openings (44, 46) are in register with the passages(402), and a second position, in which at least one of the inlet and outlet openings (44, 46) is out of register with the associated passage (402). At least one seal member (66, 68) is mounted on the body (42) at a position spaced from the inlet and outlet openings (44, 46). The at least one seal member (66, 68) is displaceable relative to the body (42), between a retracted position, and an extended position.