Air volume control

Plumbing · Public Water Service · printed page 264 (PDF page 265)

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Book index entries

Well – Air Volume Control Private Water Sources Private Water Sources for Plumbing

Text in the illustration

Air volume control pressure tank air is drawn in vacuum line air discharges to tank diaphragm water air chamber when the pump comes on, the vacuum line drops the water pressure on the right side as the diaphragm moves to the right and air is drawn in. when the pump shuts off, the water pressure on the right side increases, pushing the diaphragm to the left and pushing air into the tank Air volume control pressure tank air is drawn in vacuum line air discharges to tank diaphragm water air chamber when the pump comes on, the vacuum line drops the water pressure on the right side as the diaphragm moves to the right and air is drawn in. when the pump shuts off, the water pressure on the right side increases, pushing the diaphragm to the left and pushing air into the tank
pressure tank
air discharges to tank
air chamber
water
vacuum line
diaphragm
air is drawn in
when the pump comes on, the vacuum line drops the water pressure on the right side as the diaphragm moves to the right and air is drawn in.
when the pump shuts off, the water pressure on the right side increases, pushing the diaphragm to the left and pushing air into the tank

Generated explanation

The illustration shows a sectional view of an air volume control connected to a pressure tank. A flexible diaphragm separates the air chamber on the left from a water-filled chamber containing a spring on the right, which connects to a vacuum line. Arrows show air entering through the bottom inlet and discharging through a side connection into the pressure tank. The annotations explain that pump operation reduces water pressure and moves the diaphragm right to draw in air; when the pump stops, increased water pressure moves the diaphragm left and pushes air into the tank.

Components

pressure tank air volume control diaphragm air chamber water chamber spring vacuum line air inlet air discharge connection

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1528

Pressure tank components and pump controls

· p. 263

The illustration shows a well-water pressure tank in cutaway, with air above water and a connection to the distribution piping below. Numbered callouts identify the tank, pressure relief valve, pressure gauge, pressure s