What is the proper name for a plumbing "anti hammer" chamber?

[mikikanazawa]

...as it applies to compressible fluids. Any links to where I can read more on the mathematics of such a thing? I am looking to reduce stress on a pipe system that supplies air to shutoff valves that open and close very rapidly.

 

[byrdj]

accumulator maybe?

 

[electricpete]

surge tank?

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[CESSNA1]

MIKIKANAZAWA: It is called a snubber. You can buy them or make them. I have made them out of 0.5" copper tubing about 18" long. Solder a cap on one end, and solder the other end into the short side of a "tee". Install them in the water lines close to equipment that is causing the water hammer, such as a washing machine, and your problem will go away.

Regards
Dave