What Causes Water Hammer in Household Plumbing?

What Is Water Hammer in Plumbing?

A water hammer is scientifically known as a hydraulic shock. It happens when water flowing through a pipe is made to stop or change direction abruptly. 

Let us say a valve, faucet, or appliance shuts off suddenly. The water that was moving at high speed cannot stop suddenly. The momentum of thousands of gallons will be pushing forward. This creates a sudden surge of intense kinetic energy. This energy generates a powerful pressure wave. This wave moves back and forth through the piping system. 

This produces banging sounds and physical tremors against your walls, floors, and structural framing.

What Causes Water Hammer in Household Pipes?

Water hammer needs a mechanical characteristic. 

Here are a few reasons that can cause a water hammer effect in a household –

• Quick closing of valves and solenoids – Modern washing machines, dishwashers, and automatic irrigation systems have electronic components. They can stop water flow in a second. This will cause the water hammer effect.
• High water pressure – Many municipal water systems deliver water at high pressures. This is done so that water can reach across multi-story buildings and residential estates. Many installations use a pressure regulator at individual flats to reduce the water pressure. If you do not have a pressure release valve, this high pressure can cause water hammer.
• Loose pipes – Pipes may expand and contract over time. Imagine the plumbing lines are not properly secured. They may not be able to absorb minor vibrations.
• Trapped air pockets – Air chambers or air cushions are often built into plumbing systems to act as natural shock absorbers. Over time, these pockets can lose their efficiency.

Common Signs of Water Hammer

Of course, a loud banging sound is a clear indicator of the water hammer effect. However, it may also have a few other subtle warning signs. 

• Vibration in the walls – You may feel distinct tremor or rumble in the walls or cabinetry. This is observed soon after a tap is closed.
• Ticking or rattling noises – You may also experience a series of rapid, echoing clicks or clatter. It is followed by a drop in water flow.
• Premature failure of the fixtures – You may find your faucets and fixtures failing frequently. This is caused by the constant vibrations and pressure spikes.

Can Water Hammer Damage Plumbing Pipes?

The water hammer effect should never be ignored. It can lead to expensive property repairs. The pressure surges may reach ten times the normal pressure. 

A continuous hydraulic shock can result in weaker pipe joints. It can crack soldered copper elbows, rupture threaded fittings, and split PVC or PEX lines. It can even damage the delicate internal components within your expensive appliances like water heaters, ice makers, and washing machines.

A small noise can lead to hidden pipe leaks, structural water damage, and mould growth behind your walls.

How to Prevent and Fix Water Hammer?

Want to prevent the water hammer effect in your home plumbing? You need to manage the system pressure efficiently. You may also need to install shock-absorbing mechanisms. 

• Install water hammer arresters – These are specialized mechanical devices. They feature a sealed chamber. The chamber contains a spring-loaded piston or a compressed air bladder. They absorb the kinetic shock wave before it can rattle the rest of your piping.
• Regulate main water pressure – You can fit or adjust the pressure reducing valve on your main supply line. It makes sure that water enters your household at a safe, controlled pressure level.
• Secure the loose pipes – Check crawlspaces, shafts, or utility chases in your plumbing system. That help tighten pipe brackets and add insulation or cushioning material. This will prevent pipes from striking framing members.
• Drain the plumbing systems – Does your home have traditional ar chambers? You can turn off the main water supply and drain the trapped water. This can help reduce the pressure in the lines.

When to Call a Professional Plumber?

Of course, you can handle a few repairs yourself. These may include securing an exposed, loose pipe strap. However, we recommend professional assistance for most of the water hammer issues. 

Call a professional plumber in the following cases:

• You may experience the banging noise persisting or worsening even after troubleshooting steps.
• You might have noticed unexplained drops in water pressure. You may also notice signs of active moisture and leaks behind walls.
• You may need complex solutions for your plumbing systems. These include installing water hammer arrestors or replacing main pressure-reducing valves. The repairs may also include overhauling ageing household plumbing layouts.

If you come across any of these issues, we recommend seeking help from a reliable plumbing service provider. 

Professional Plumbing Solutions by Magic Build

Well, dealing with a plumbing system need not be a difficult task. If you are going through persistent water hammer issues, you can trust Magic Build. We are a trusted and reliable plumbing service in Singapore. 

We are a premier home maintenance, renovation, and handyman specialist. Magic Build offers a comprehensive suite of expert plumbing solutions. Our services range from general plumbing repairs and pipe modifications to water heater and fixture installations. Our experienced, skilled professionals are dedicated to diagnosing the root cause of your plumbing woes quickly. We offer lasting and permanent fixes to restore safety and peace to your home.

Don't let hydraulic shock compromise your home infrastructure. Contact Magic Build today for top-tier plumbing services tailored to your needs!  

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