Watts Water Hammer Arrestor Sizing

We offer water hammer arrestors to absorb the shock thereby eliminating noise and potential damage to the piping system.

Watts water hammer arrestor sizing.

Water hammer arrestors are used to absorb the shock when water flowing in a piping system suddenly stops due to fast closing shutoff valves dishwashers and clothes washers. We have models for residential and commercial applications. Water hammer arrestor no. Sudden stoppage of water a non compressible liquid flowing at a given pressure and velocity causes a surge or spike of water and is called water hammer.

Water hammer arrestors zurn plumbing products groupspecification drainage operation 1801 pittsburgh avenue erie pa 16502 phone 814 455 0921 fax. This 1 inch unit size f lead free water hammer arrestor is used in commercial and industrial applications to control water pressure shock and prevent water hammer conditions. There have been various methods devised for the sizing of water hammer arresters. Sizing and placement rule 1 covers multiple fixture branch lines which do not exceed 20 ft.

Explanation fixture unit sizing and selection table is used to select the required pdi unit water hammer arrestor. Pdi dn code code fixture standard units in. Rule 2 covers multiple fixture branch lines which do exceed 20 ft. For hither details read standard.

When this occurs a pressure wave travels back through the piping until it finds a point of relief. These methods have created confusion regarding the proper sizing and location of water hammer arresters among engineers contractors and other persons engaged in the plumbing industry. To help clear up the confusion the following article was excerpted from the pertinent sections of the plumbing drainage. Shock hammer arrestors our shock water hammer arrestors prevent water hammer in piping systems the cause of banging pipes which generally results from sudden changes in flow velocity.

This action protects against annoying and potentially damaging effects of water hammer. This 3 4 inch unit size b lead free water hammer arrestor is used in commercial and industrial applications to control water pressure shock and prevent water hammer conditions. The series lf15m2 and lf15m2s water hammer arrestors are designed to eliminate this effect. Mm threaded solder 1 2 15 15m2 a 0750140 15m2 as 0750150 1 11 a 3 4 20 15m2 b 0750141 15m2 bs 0750151 12 32 b 1 25 15m2 c 0750142 15m2 cs 0750152 33 60 c 1 25 15m2 d 0750143 15m2 ds.