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US4592379A Fluid distribution valve 失效
流体分配阀

Fluid distribution valve
摘要:
A fluid distributing valve has the supply opening or conduit and the outlet openings or conduits disposed on the same side of the valve and oriented in the same direction. Accordingly the need for having couplings or unions to connect the supply pipe to the valve are eliminated. The valve includes a flow chamber or compartment and a control chamber or compartment so that the fluid passing through the valve does not flow past the operating members. By-passes are provided which may be finely screened to provide control water from the flow chamber to the control chamber. The valves are diaphragm operated, close, and remain closed against the flow pressure and are thus normally closed. They are open by a rotating operating cam whose operating surface moves cylindrical balls out of the way so that pressure in the control compartment can be exerted against the upper operating surface of the diaphragm operating members. A pause control mechanism is included so that the valve movement can be stopped or paused at any position desired and since in so doing the valve member at that position is open, flow continues in the flow chamber. When the pause mechanism is released the impeller begins and continues to rotate causing the distributing valve to pick up and move on from where it was stopped.
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