clanging in hot water radiator system??

JK_3

That is a taco flow check and as they get old they tend to make a rattling type of sound. it can mabye be adjusted or if you do not have a domestic coil can mabye be eliminated.eliminating or replacing won't be to hard since you have copper piping. if you need a pro you can search here under "find a pro" good luck

Brandon_6

Clanging in hot water radiator system??

My 80 year old house has a hot water radiator system that has started to exhibit frequent clanging (expansion & contraction) noises when the water is heated and circulating through the system. I bled all radiators but to no avail. The noise is frequent and does not stop until boiler shuts off. Why is this happening all of a sudden?

JK_3

have you been able to determine when it starts and stops clanging does it corrolate to circ or burner on and off? also what is clanging is it pipe,rad,boiler etc.? with more info we might be able to help.

Brandon_6

Good questions. Seems to be related to the turning on of the boiler and the clanging appears loudest at pipes coming out of the boiler itself. The noise is loudest there.

Brandon_6

Seems to be coming from a green valve directly above the boiler with the words "TAKO 221, Universal Flowcheck" imprinted on it. The noise is definately coming from within this valve (green in color)

Timco

That old taco valve is likely falling apart or loose internally. Some can be set open or closed, but are crusted in one position. Try turning it to the open position and see if it helps. May be time for a new check valve, but those valves are typically not used as they are long stuck in one position. Can you post a picture? You can get a new one, but it might be a pain to replace...

Tim

Brandon_6

Here You Go

Joe Mattiello

The noise could be emanating from the check valve because of velocity of the water. Try changing the dynamics of the system by throttling the flow using an inline isolation valve. If the noise goes away, you can try finding the spot that works without compromising the system flow requirements. Incidentally, you might need to increase the flow, beyond the capacity of the existing pump, or go with a smaller check valve.

Brandon Fried

Top of valve

What is the screw type device on top of the valve? Is it some type of adjuster?