How to stop water hammer in boiler with pictures
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Water hammer (or, more generally, fluid hammer) is a pressure surge or wave caused when a fluid (usually a liquid but sometimes also a gas) in motion is forced to stop or change direction suddenly (momentum change). Air chambers are located where valves are found and act as cushions. Obviously if you turn off the quarter turn taps slowly you won't get the water hammer.
I replaced the cistern float valve with the old fashion brass valve and arm as they're much better in reducing the hammering.
Troubleshooting and how to stop water hammer. You can cure water hammer by turning off the water behind the waterlogged chamber, opening the offending faucet and permitting the faucet to drain thoroughly. Water hammer is not only a system issue but it is also a safety issue. Once all the water drains from the chamber, air will fill it again and restore the cushion.
