Manufactures three individual models of the Aqua-Hot Hydronic Heating System.

The pressure fluctuates between 35 and 58 psi when water is running.

My issue is after a period of non-use and water is run the tank will make a bangclunk sound when the pump turns on.

I know the noise does not come from pipes, it seems to be localized at the tank.

My question is, what is causing the bangingclunking noise and how can I correct it It may say AOSmith but I found your pump to be manufactured by Gould,(see image).

Push it in, you should not get any water out of that valve at all.

You will hear a clunk on the bottom filled with water, however you should hear a clang near the top filled with air.

To set the air pressure in a bladder tank, look at the cut-in pressure on your pressure switch.

When there is no more water coming out of the hose bib that you drained the system down with set the pressure in t6he bladder tank at 2 lbs.

FEATURES Deep Drawn Steel Shells: Provide maximum material strength.

Interior Tank Lining: Features a durable polypropylene liner.

Maximum Working Pressure: 125 psi Temperature Rating: Maximum 120 F Stainless Steel System Connection: On all models.

Appliance Appearance Exterior Finish: Blue color, high durability exterior finish of tough, powder coat over a zinc phosphate surface treatment.

Tanks are designed for installation indoors or where they are protected from rain, irrigation over-spray, salt air and other corrosive environments.

HydroPro tanks provide years of dependable water system storage and delivery service The efficient design reduces pump onoff cycles, resulting in longer motor and switch life, and reduced power costs.

Aqua Air V100 Pressure Tank Manual