The noise from banging pipes is caused by shocks of high speed water flowing in the piping system when a fixture is suddenly closed. Sudden stoppage of the water (a non-compressible liquid) flowing at a given pressure and velocity causes a surge or spike of pressure and is called water hammer. When this occurs, a pressure wave travels back through the piping until it finds a point of relief. Dishwashers, clothes washers, fast closing positive shut-off valves incorporated in the system all contribute to creating water shock which is not only annoying but damaging to pipes and appliances. The Watts series 15M2 incorporates a pre-charged, permanent sealed air chamber to absorb the shock. The sealed chamber prevents the loss of air to the water and insures long and trouble-free life.

Commercial Water Hammer Arrestor, Nominal Size: 3/4 IN, Connection Type: MNPT, Temperature Rating: 33 - 180 DEG F, Pressure Rating: 150 PSI, Material: Copper Body, Brass Adapter, EPDM Ring, Length: 8-9/16 IN, 1-3/8 IN Width, Industry Standards: IAPMO Certified, ASSE 1010 Approved, PDI WH201 Approved And Certified

• NPT solid hex brass adapter or solder end connection for easy installation
• May be installed in new or existing plumbing systems with a standard pipe tee vertically, horizontally or at any angle
• Maintenance-free - piston is the only moving part
• Air pre-load is 60 PSI (4.2 BAR)
• Factory air charged and permanently sealed

• Instruction/Installation Manual https://macombstage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/Watts_15M2-A_Instruction_Installation_Manual.pdf
• Specification Sheet https://macombstage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/Watts_15M2-A_Specification_Sheet.pdf
• Warranty Information https://macombstage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/Watts_0009108_Warranty_Information.pdf