Water Hammer Arrestor Sizing Calculator

Size water hammer arrestors based on fixture unit count, pipe size, and system pressure to prevent hydraulic shock in plumbing systems.

Total fixture units on the branch
Supply pipe diameter
Static water pressure at arrestor location

Results

Arrestor Size (PDI Rating)-
Connection Size (inches)-
Est. Shock Pressure (PSI)-
Min Chamber Volume (cu in)-
References: ['PDI-WH 201 - Water Hammer Arresters', 'ASSE 1010 - Water Hammer Arresters Standard', 'IPC Section 604.9 - Water Hammer', 'UPC Section 609.10 - Water Hammer Arrestors']