Patent ID: 6725875
Filing Date: 2004-04-27
Classification: F16K,F16L,Y10T

Abstract:
A directional-control valve connectable to a first main pipe and a secondary pipe the first main pipe connected to a fluid a source the valve comprising:an upstream port and a downstream port connectable to the main pipe and having identical diameters; a third connection port connectable to the secondary pipe; a shut-off member capable of moving at right angles to the main pipe between, a first closed position, in which the shut-off member comprises a first orifice, of a diameter identical to that of the upstream port and downstream port, positioned in line with the upstream port and downstream port, so as to allow fluid to pass through the main pipe and inhibit fluid from passing from the main pipe to the secondary pipe, and a second open position, in which the shut-off member comprises a second orifice opening toward the upstream port and toward the third connection port, so as to place the upstream port and the secondary pipe in fluid communication and inhibit fluid from passing to the downstream port; and wherein the diameter of the upstream port and the downstream port are sized to allow a scraper to pass there through to permit cleaning there between when the shut-off member is in the first closed position and the second orifice of the shut-off member comprises means for preventing the scraper, coming from the upstream port, from entering the second orifice when the shut-off member is in the second open position.