Straight travel valve shuttle valve, valve and actuator valves, is a complex. Small size, easy to install the advantages of the shuttle valve to work roughly the same. For example: Italy OMALVIP shuttle valve: When "A" to the hole in the air ("B" vent), the piston "D" I moved and pressure, seal the seat, and then close the valve normally closed Single spring mounted in action in "A", partial room. In unregulated, the piston fell on the seat, so the most common is off. Switching process: from a hole to promote the two holes compressed to the piston axis of the air, changing the original valve or closed state, normally closed, closed spring force, normally open type, by spring force, open or open takeoff less than 1 second time. Open the valve: When the hole "B" into the air ("A" hole exhaust), from the seat piston shaft to "C:" I would like to stop at the end of this trip, when the valve is open. The normally open single-action spring is installed in the "B" compartment. In the non-controlled, the piston shaft is the left-hand seat, so the most commonly used is the open position. Typical applications: gas technology, oxygen, nitrogen, vacuum applications, sanitary ware industry, refrigeration. Shuttle valve has two entrances, one exit output. When importing and exporting import and export. If the two inlet pressure range, the import and export of high pressure. If the two inlet pressures are equal to the inlet and outlet pressures. Equivalent to two one-way valve shuttle valve combination, its role is equivalent to "or". The shuttle valve has two inlets P1 and P2, one electrical outlet, where P1 and P2 can be connected to one port, but P1 and P2 are not connected. For any P1 and P2 signal input, A has output. If P1 and P2 signal input, the first side of the signal or added gas pressure signal output is high, the other is blocked, only when P1 and P2 no signal input, no signal output. The pneumatic system is widely used in shuttle valves, which can control the input control signals, the orderly implementation of the components, the common manual and automatic shuttles on the shuttle control valve used in parallel.
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