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by compressed air, nitrogen or natural gas.
The main directional (air) control valve
①
distributes
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over the inner surface of the diaphragm
②
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from behind the opposite diaphragm
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port
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.
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pressure
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, the rod
⑤
connected diaphragms shift
together creating discharge on one side and suction on the
opposite side. The discharged and primed liquid’s directions
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orientation.
The pump primes as a result of the suction stroke. The
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increasing
the chamber volume. This results in a pressure differential
necessary for atmospheric pressure
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through the suction piping and across the suction side check
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.
Suction (side) stroking also initiates the reciprocating
(shifting, stroking or cycling) action of the pump. The suction
diaphragm’s movement is mechanically pulled through its
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actuator plunger aligned to shift the pilot signaling valve.
Once actuated, the pilot valve sends a pressure signal to the
opposite end of the main directional air valve, redirecting the
compressed air to the opposite inner chamber.
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prevent siphoning spills.
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