Water Hammer Arrestors

Water Hammer Arrestors Stop Pipe Banging & Pressure Surges

Water hammer arrestors in brass, copper and stainless steel, in multiple sizes – supplied across Dubai and the UAE.

Water Hammer Arrestors Supplier in Dubai, UAE

Water hammer is the loud bang or knock you hear when a valve closes quickly and the water in the pipe stops suddenly. Each shock can push pipe pressure several times above normal. Over time it loosens supports, damages valves and fittings, and causes leaks inside walls and ceilings.

A water hammer arrestor absorbs that shock. It has a sealed air or gas cushion behind a piston, so the pressure wave is taken up inside the arrestor instead of travelling through the pipework. Alphatek supplies water hammer arrestors to contractors, MEP consultants and FM companies across Dubai, the UAE and the GCC.

Where they are needed

Quick-closing valvesSolenoid valves, lever taps, flush valves and washing machine or dishwasher connections.

Hotels and apartmentsOn the branch serving each bathroom and kitchen, where many outlets close quickly.

VillasNear washing machines, dishwashers and single-lever mixers on the supply line.

Commercial kitchensDishwashers, combi ovens and quick-closing taps that cause repeated shocks.

Laundries and hospitalsBuildings with many solenoid-operated machines on the same water main.

Pumps and long pipe runsOn booster pump discharge lines and at the end of long horizontal runs.

What we supply

Item	Details
Brands	Water hammer arrestors from several leading brands
Sizes	Multiple sizes, from branch lines to risers and pump discharge lines
Body material	Brass, copper and stainless steel
Type	Sealed piston-type units that need no recharging or maintenance
Pipework	Suitable for copper, PPR and PEX pipework with the right adaptors
Service	Hot and cold potable water systems

How to choose the right size

Arrestors are sized by the number of fixtures on the branch (fixture units) and installed as close as possible to the quick-closing valve. Send us your drawings or fixture schedule and our team will recommend the size and position for each location.

Not sure which size you need? Send us your drawings or fixture schedule and we will size and quote every location.

Why contractors choose Alphatek

Stock in DubaiFast delivery to site across Dubai and the UAE.

Submittals readyTechnical submittals and datasheets for consultant approval.

Sized for your projectWe size and position arrestors from your drawings or fixture schedule.

One supplierDrainage, plumbing accessories and fabrication from one team.

Fast quotationsQuotes the same or next working day.

UAE and GCCDelivery across the UAE and to GCC projects on request.

Signs your building has water hammer

A loud bang or knock when a tap, flush valve or washing machine shuts off
Pipes that shake or rattle inside walls and ceilings
Leaks at joints and valves that keep coming back
Noisy solenoid valves on irrigation, water features or equipment

Arrestor or air chamber?

An old-style air chamber is just a capped length of pipe. Over time the air dissolves into the water and the chamber stops working. A sealed water hammer arrestor keeps its cushion behind a piston or bellows, so it keeps working without draining or recharging.

Materials compared

Material	Best for
Brass	Most concealed residential and commercial installations
Copper	Copper pipework systems
Stainless steel	Exposed, demanding or high-humidity locations

Installation checklist

Fit it as close as possible to the quick-closing valve
Put one at the end of each branch serving several fixtures
Keep it accessible for inspection
Check the pressure-reducing valve setting – high pressure makes water hammer worse

Water hammer arrestor supplier in Dubai & the UAE

Alphatek supplies water hammer arrestors in brass, copper and stainless steel to contractors, MEP companies and facility management teams in Dubai and across the UAE. Send your fixture list, pipe sizes or plumbing drawings and we will suggest the right size for each branch, with delivery to your site.

DubaiAbu DhabiSharjahAjmanRas Al KhaimahFujairahUmm Al QuwainAl Ain

Frequently asked questions

What causes water hammer?

A fast-closing valve stops moving water suddenly. The water’s momentum creates a pressure spike that travels back through the pipe and makes the banging sound.

Where should a water hammer arrestor be installed?

As close as possible to the valve that causes the shock, usually within 1.8 m (6 ft), on the supply line to that fixture or group of fixtures.

Do water hammer arrestors need maintenance?

Sealed piston-type arrestors do not need recharging or regular maintenance.

Can you supply arrestors for a whole building?

Yes. Send the drawings and we will size and quote every location.

Will an arrestor fix banging in an existing building?

Yes. Arrestors are often retrofitted in Dubai villas and apartments. They are fitted close to the valve that causes the shock, usually without major works.

Do you provide submittals?

Yes. We provide technical data sheets and submittals for consultant approval.

Need water hammer arrestors?

Send us your drawings or fixture schedule – we will recommend the right size and position and send a quotation.