• Dutco Tennant LLC, PO Box 233, Dubai, U.A.E.

Water hammer is the pressure caused when a fluid in motion is suddenly stopped or is made to change its direction. It is also known as hydraulic shock. Water hammer usually occurs when a valve closes at an end of a pipeline system. This pressure can cause a lot of serious problems, such as explosion or collapse of the pipe, and appendages due to loud sound, and vibration.

Water hammer can be experienced in domestic plumbing, in dishwashers, washing machines, and in toilets. It can also happen in hydroelectric generating stations. It can be heard as a loud banging, repetitive banging, or as some shuddering.

The effect of water hammer can be significantly reduced with the help of water hammer arrestors. Water hammer arrestors are hydro pneumatic devices similar in principle to a shock absorber. When installed between the water pipe and the machine, it absorbs the shock reduces pressure in the piping system to safe levels.


  • ART 1335 BSP. ART 1335 NPT
  • Lead free
  • Precharged, permanent sealed air chamber to absorb
  • the shock
  • Approved for installation with no access panel required
  • May be installed in new or existing plumbing systems
  • with a standard pipe tee
  • Air pre-load is 60psi (4.2 Bar)
  • Factory air charged and permanently sealed
  • Design standard PDI WH-201

Technical Data

  • Max Pressure : 350psig
  • Working Pressure : 150psi (10.6 Bar)
  • Working Temperature : 0.5°C to 82°C
Piston Type-Lead Free Copper Alloy

Piston Type-Lead Free Copper Alloy

Diaphragm Type-Stainless Steel Arrestor

Diaphragm Type-Stainless Steel Arrestor