Water hammer is a problem in many industrial applications. It can shorten the life span of a check valve and the fluid system, cause damage to key components, and decrease the efficiency of the system as a whole. So when water hammer becomes a serious issue, it's important to find and implement a solution as quickly as possible. In this presentation, learn more about what causes water hammer, how water hammer can be reduced or even eliminated, and how the right in-line check valve can prevent it from becoming an issue in the first place. You can also download the full eBook from DFT Inc. on how to reduce the impact of water hammer from their website listed in the presentation above.

1. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
7 Key Factors to Understanding
Water Hammer

2. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Factor #1: Understanding Water Hammer
• Water Hammer is a shock wave that is
transmitted through the fluid contained in a
piping system
• In simple terms, Water Hammer occurs when
a fluid in motion is forced to a sudden stop

3. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Factor #2: Causes of Water Hammer
• There are many elements that cause Water
Hammer
• These include:
• Improper valve selection
• Certain valves, such as swing check valves, tilting disc
checks and double door check valves may contribute
to water hammer problems.
• Improper valve location
• Poor Maintenance Practices

4. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Factor #3: Hydraulic Shock
• The various causes for Water Hammer create
Hydraulic Shock
• Hydraulic Shock is the momentary rise in fluid
pressure from a sudden stoppage of flow
• Piping systems stretch and snap back during
Hydraulic Shock

5. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Factor #4: Flow Rate and Severity of Water Hammer
• The actual force of Water Hammer is
determined by the flow rate when the fluid
stops and the length of time of the flow
stoppage

6. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Factor #5: Consequences of Water Hammer
• Damage from Water Hammer ranges from
mild to severe including damage to:
• Pipelines
• Pipe joint gaskets
• Components like flow meters and pressure
gauges

7. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Factor #6: Solving Water Hammer
• Solutions for Water Hammer include:
• Operator training and education
• Arrestors
• Check valves

8. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Factor #7: Choosing the Right Valve
• Properly engineered systems, like those from
DFT, reduce or even eliminate the likelihood
of Water Hammer

9. DFT Inc. 140 Sheree Blvd. PO Box 566, Exton, PA 19341
toll-free 800-206-4013 fax 610.524.9242 e-mail dft@dft-valves.com
Water Hammer Solutions from DFT
• Whatever the cause of your Water Hammer
problem is, the experts at DFT valves can
offer targeted advice and specialized
solutions