A water hammer arrestor is a plumbing device designed to alleviate the destructive effects of water hammer, a sudden increase in water pressure within the plumbing system caused by the rapid stopping or starting of water flow. While water hammer arrestors are highly effective in mitigating this phenomenon and are commonly used in homes and commercial buildings, it is essential to be aware of potential disadvantages associated with their use. In this article, we will explore the advantages of water hammer arrestors, followed by a discussion on some limitations and potential disadvantages they may present.
The Advantages of Water Hammer Arrestors:
1. Prevents Damage to Plumbing System:
Water hammer, if left uncontrolled, can cause significant damage to pipes, valves, and fixtures. The sudden surge in pressure can result in leaks, ruptures, and even burst pipes. By installing water hammer arrestors at key points in the plumbing system, these devices absorb and dissipate the energy that would otherwise cause damage.
2. Reduces Noise and Water Hammer Effects:
Water hammer can create a loud banging noise when water abruptly changes direction. It can also cause vibrations throughout the plumbing system, which can be detected as shaking or rattling within the building. Water hammer arrestors help minimize or eliminate these noisy and disruptive effects, providing a quieter and more comfortable environment.
3. Extends the Lifespan of Appliances:
Home appliances such as washing machines, dishwashers, and toilets can suffer premature wear and tear due to the impact of water hammer. By installing water hammer arrestors near these appliances, the devices absorb the shock and protect them from excessive stress, prolonging their lifespan.
Limitations and Potential Disadvantages:
1. Size Limitations:
Water hammer arrestors come in various sizes, and selecting the appropriate size is crucial for optimal performance. If undersized, the arrestor may not handle the water hammer effectively, leading to continued noise and potential damage. Conversely, an oversized arrestor may cause a pressure drop and reduce the flow rate, impacting the performance of faucets and appliances.
2. Accumulation of Foreign Debris:
Over time, water hammer arrestors can accumulate sediment, minerals, or other debris that may affect their functionality. This accumulation can result in reduced arrestor efficiency and potentially necessitate periodic cleaning or maintenance.
3. Potential for Failure:
While water hammer arrestors are designed to withstand the pressure fluctuations caused by water hammer, there is a small possibility of failure. If an arrestor fails, it may no longer prevent water hammer, and the sensitive components of the plumbing system could be at risk. Regular inspection and replacement of water hammer arrestors are necessary to ensure their continued efficacy.
4. Cost Considerations:
The installation of water hammer arrestors adds to the initial plumbing costs. While the device’s benefits may outweigh these upfront expenses in the long run, it is essential to consider the cost-benefit analysis and evaluate the necessity of their use based on the unique plumbing system and its susceptibility to water hammer.
Water hammer arrestors provide crucial benefits in homes and commercial buildings by preventing damage to plumbing systems, reducing noise and vibrations, and extending the lifespan of appliances. However, it is important to consider their potential disadvantages, such as size limitations, accumulation of foreign debris, the possibility of failure, and additional costs. A thorough evaluation of the plumbing system’s needs and professional guidance can ensure the appropriate selection, installation, and maintenance of water hammer arrestors, maximizing their efficiency while minimizing any disadvantages.