BLACOH “How does the automatic air control work?
9. BLACOH An automatic poppet type valve located in the non-wetted section of the dampener allows for an increase in compressed air pressure to balance an increase in system liquid pressure. As liquid system pressure increases, the bladder is pushed further up into the dampener until it touches the internal automatic valve. This contact opens the valve and allows an increase of compressed air to enter the dampener. When the air pressure equals the system liquid pressure, the dampener is in balance and pulsations are minimized. If a change in pressure occurs this process is repeated. Automatic units are designed for use on air operated diaphragm pumps in systems with a varying discharge pressure.
