Description
The Key Plumb Mini Rester Water Hammer Arrestor (K06947) is a compact, professional-grade device designed to eliminate banging pipes and protect your plumbing system from damaging pressure surges. Its sealed air chamber absorbs shock waves created when water flow is suddenly stopped — preventing the loud hammering noise and potential damage to pipes, valves, and appliances.
Key Features
- ✅ Eliminates water hammer — stops banging and knocking in pipes
- ✅ Compact mini design — fits in tight installation spaces
- ✅ Suitable for hot and cold water lines
- ✅ Top and under fixing options — suits most configurations
- ✅ Maintenance-free operation
- ✅ Durable construction for long-lasting performance
- ✅ Easy to install near washing machines, dishwashers, and other appliances
Technical Specification
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Brand: Key Plumb
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SKU / Model: K06947
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Type: Mini Rester Water Hammer Arrestor
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Max Working Temperature: 120°C
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Max Working Pressure: 15 Bar
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Max Hammer Pressure: 50 Bar
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Operating Start Pressure: 3 Bar
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Application: Hot and cold water lines
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Operation: Maintenance-free
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Weight: 0.15 kg
Common Applications
- Washing machine supply lines
- Dishwasher connections
- Toilet fill valves
- Kitchen and bathroom taps
- Any appliance with quick-closing solenoid valves
- Locations with limited installation space
What is Water Hammer?
Water hammer is the loud banging or knocking noise heard in pipes when a tap is turned off quickly or an appliance valve closes suddenly. The fast-moving water creates a shock wave when forced to stop abruptly. Over time, water hammer can damage pipes, loosen joints, and cause leaks. The Mini Rester absorbs these shock waves, protecting your plumbing system.
How to Install
- Turn off the water supply to the affected line
- Drain the pipe by opening the lowest tap
- Identify the location closest to the source of water hammer
- Install the Mini Rester on the supply line near the problematic appliance or fixture
- Ensure proper orientation as per manufacturer's instructions
- Tighten connections securely
- Turn the water supply back on and test
- Check for leaks at all connections
Professional installation by a qualified plumber is recommended.
Frequently Asked Questions
What causes water hammer in pipes?
Water hammer is caused by sudden changes in water flow — typically when a valve closes quickly. The fast-moving water creates a shock wave that travels through the pipes, causing the banging noise.
Where should I install the Mini Rester?
Install as close as possible to the source of the water hammer — typically near washing machines, dishwashers, or any appliance with quick-closing solenoid valves.
Will one Mini Rester fix all my water hammer problems?
One arrestor typically protects one appliance or fixture. If you have water hammer in multiple locations, you may need multiple units.
Does the Mini Rester need maintenance?
No — it is maintenance-free and designed for long-lasting, trouble-free operation.
Can I use this on both hot and cold water lines?
Yes — the Mini Rester is rated for both hot and cold water supply lines, up to a maximum working temperature of 120°C.
Will this reduce my water pressure?
No — water hammer arrestors do not affect normal water pressure or flow rate.
Can I order if the item shows as out of stock?
Yes — you can still place your order and we will despatch as soon as stock is available. Contact us at customerservice@bubblegumbathrooms.co.uk for lead time queries.
