Pipes bang when you close Hot or Cold water. Would you say that the plumber failed to install airlocks at each faucet?

capthah

iamgrowler

I think you mean 'air chambers' -- And since they are no longer required by code, it's likely the Plumber didn't install them.

Banging pipes can be caused by a number of factors:

Excessive water pressure.

A system closed by a backflow preventer and the lack of an expansion tank.

A malfunctioning check valve in a H/W recirculating system.

Or even inadequately strapped water piping.

ballengerb1

Everything growler says makes sense. What type of piping does your home have?

capthah

all copper pipes

ballengerb1

I would have my wife or kids open and close the offending faucets while I moved about the basement touching as many pipes as I can reach. Once you find a pipe that jolts when you close the faucet insulate the pipe with a plastic pipe hanger every 10" minimum. Sioux has add on air chambers that you can attach on a line or at the stop if you want to go that route. Maybe growler can explain to us why air chambers are not longer required by code. I am not clear on the rationale behind that change.

wmy2k

could be as simple as a loose faucet washer also.

iamgrowler

Because it's an unnecessary maintenance burden placed on the homeowner.

If sized properly, strapped properly and the appropriate devices for the specific installation are installed (Pressure Reducing Valves, Expansion Tanks, Backflow Preventer's, Shock Arrestors, Check Valves, Reduced Pressure Backflow Preventer's etc. . .), then air chambers aren't needed.