Watts Water Hammer Arrestor Sizing

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.

Watts water hammer arrestor sizing.

We offer water hammer arrestors to absorb the shock thereby eliminating noise and potential damage to the piping system. When this occurs a pressure wave travels back through the piping until it finds a point of relief. Rule 2 covers multiple fixture branch lines which do exceed 20 ft. Pdi dn code code fixture standard units in.

To help clear up the confusion the following article was excerpted from the pertinent sections of the plumbing drainage. 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. There have been various methods devised for the sizing of water hammer arresters. 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.

This action protects against annoying and potentially damaging effects of water hammer. 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 arrestor no. Sizing and placement rule 1 covers multiple fixture branch lines which do not exceed 20 ft.

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. Approved watts regulator water hammer arrester with p d i. For hither details read standard. It consists of a copper body with a lead free brass npt threaded hex adapter epdm seals and o rings polypropylene piston and cap.

Explanation fixture unit sizing and selection table is used to select the required pdi unit water hammer arrestor. 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. 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. It consists of a copper body with a lead free brass npt threaded hex adapter epdm seals and o rings polypropylene piston and cap.