The United States of America Ou pipe clamp valve ( Pinch valve ) also known as hose valve, refers to the rubber sleeve for the sealing and opening and closing piece, through the hand wheel drive drives the upper and the lower gate movement, thereby the compression sleeve for closing and opening the valve. Can be widely used in the pulp, abrasive, warm dry type dust. Inlet pipe clamp valve cast iron, aluminum alloy pipe clamp valve is composed of valve body, aluminum alloy, rubber sleeve size stem wedge gate, the upper and lower guide column and other parts. When the hand wheel clockwise, so that the size of the stem and drives the upper and lower stubble plate, compression sleeve, close, and will be open. Thus, the gate in the guide post between the upper and lower reciprocating valve opening and closing work completed, other rubber tube due to or bearing small, so in the opening and closing, operator rotation wheel was appropriate as long as the conflict, to open and close the pole. Do not try to more subsidies, disable other tools to open and close.