Pneumatic argumentation circuits are added circuitous circuits controlled by added than one valve, either in alternation (AND circuits) or in alongside (OR circuits). Aeriform argumentation circuits assignment in a agnate way to argumentation circuits in electronics, with aeriform valves instead of cyberbanking switches.
Logic circuits are generally acclimated to accomplish aeriform systems safe. For archetype some aeriform drills will not assignment unless a bouncer is in place. The assignment requires two switches to be operated in adjustment to work: the aboriginal by putting the bouncer in place, the additional by acute start.
An AND ambit has two valves in series. In the diagram below, both three-port valve A and three-port valve B accept to be apprenticed afore the agent in the single-acting will outstroke. Valve B will accept no air accumulation unless valve A is open. Valve B controls the air accumulation to the single-acting cylinder.
An OR ambit has two valves in parallel. The distinct acting will go absolute if valve A OR valve B OR both of them are pressed. The shuttle valve provides the OR control. A T-piece may arise to do a agnate job, but a T-piece would acquiesce air to escape out of the bankrupt anchorage of the 3/2 that was not pressed.
It helps to anticipate of valves as switches (as in electronics). Valves may be operated by altered actuators (controls), for archetype advance on, batten or roller trip, but they do the aforementioned thing: artlessly about-face the achievement air on or off.
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