{"product_id":"water-hammer-arrestor-installation","title":"Water Hammer Arrestor Installation","description":"\u003ch2\u003eStop Banging, Knocking \u0026amp; Shaking Water Pipes\u003c\/h2\u003e\n\u003cp\u003eLoud banging or knocking from your plumbing when a tap, washing machine, dishwasher or other fixture shuts off can be caused by \u003cstrong\u003ewater hammer\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eJR Gas \u0026amp; Water can supply and install water hammer arrestors throughout Greater Brisbane and the Gold Coast to help absorb sudden pressure changes and reduce shock through the water pipework.\u003c\/p\u003e\n\u003cp\u003eWater hammer arrestors can be installed on suitable existing plumbing or replaced where an existing arrestor is no longer performing correctly.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Water Hammer?\u003c\/h2\u003e\n\u003cp\u003eWater hammer occurs when moving water is suddenly stopped or changes direction.\u003c\/p\u003e\n\u003cp\u003eQuick-closing valves can cause a rapid pressure change through the pipework, producing symptoms such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eBanging pipes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKnocking inside walls\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePipes shaking when a fixture shuts off\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVibration from water lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSudden thumping noises\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNoise when a washing machine valve closes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNoise when a dishwasher shuts off\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNoise when mixer taps are turned off quickly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe cause should be assessed before assuming an arrestor alone will solve the problem.\u003c\/p\u003e\n\u003ch2\u003eHow Does a Water Hammer Arrestor Work?\u003c\/h2\u003e\n\u003cp\u003eA water hammer arrestor provides a small pressure-absorbing chamber within the plumbing system.\u003c\/p\u003e\n\u003cp\u003eWhen water flow stops suddenly, the arrestor helps absorb the pressure surge rather than allowing the shock to travel through the pipework.\u003c\/p\u003e\n\u003cp\u003eCorrect positioning is important.\u003c\/p\u003e\n\u003cp\u003eAn arrestor generally provides the greatest benefit when installed close to the fixture or valve creating the pressure surge.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included?\u003c\/h2\u003e\n\u003cp\u003eStandard water hammer arrestor installation includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSupply of a suitable water hammer arrestor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation onto accessible suitable existing pipework\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRequired standard connection fittings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIsolation of the water supply\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReconnection of disturbed plumbing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePressure testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLeak testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOperational testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBasic assessment of the water hammer symptoms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBasic clean-up of the immediate work area\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhere the existing plumbing needs alteration beyond the standard connection, additional work may be required.\u003c\/p\u003e\n\u003ch2\u003eNew Water Hammer Arrestor Installation\u003c\/h2\u003e\n\u003cp\u003eChoose a new installation where there is currently no arrestor fitted.\u003c\/p\u003e\n\u003cp\u003eCommon applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWashing machines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDishwashers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKitchen plumbing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLaundry plumbing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eToilet supply pipework\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFast-closing mixer taps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSolenoid-operated appliances\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOther quick-closing water valves\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe best location depends on which fixture is causing the water hammer and how the existing plumbing is configured.\u003c\/p\u003e\n\u003ch2\u003eWater Hammer Arrestor Replacement\u003c\/h2\u003e\n\u003cp\u003eExisting arrestors can deteriorate or stop effectively absorbing pressure changes over time.\u003c\/p\u003e\n\u003cp\u003eWe can remove and replace an existing accessible arrestor where the surrounding plumbing remains suitable.\u003c\/p\u003e\n\u003cp\u003eReplacement may be appropriate where:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWater hammer has returned\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAn existing arrestor is leaking\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe arrestor is corroded\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe fitting has been damaged\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe plumbing is being upgraded\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAn older arrestor is no longer effective\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWashing Machine Water Hammer\u003c\/h2\u003e\n\u003cp\u003eWashing machines are a common source of water hammer because their internal solenoid valves can shut the water supply very quickly.\u003c\/p\u003e\n\u003cp\u003eIf banging occurs when the washing machine:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eStarts filling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStops filling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eChanges cycle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOpens or closes its water valve\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ea water hammer arrestor installed near the washing machine connection may help.\u003c\/p\u003e\n\u003cp\u003eBoth hot and cold supplies may need to be considered depending on the appliance and installation.\u003c\/p\u003e\n\u003ch2\u003eDishwasher Water Hammer\u003c\/h2\u003e\n\u003cp\u003eDishwashers also use fast-acting water valves.\u003c\/p\u003e\n\u003cp\u003eIf the pipework bangs when the dishwasher fills or stops filling, we can assess whether installation of a water hammer arrestor near the appliance supply is appropriate.\u003c\/p\u003e\n\u003ch2\u003eWater Hammer From Taps \u0026amp; Mixers\u003c\/h2\u003e\n\u003cp\u003eWater hammer can also occur when taps or mixers are shut quickly.\u003c\/p\u003e\n\u003cp\u003eThis is particularly noticeable with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLever mixers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eQuarter-turn taps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-flow fixtures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh water pressure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLong pipe runs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInstallation of an arrestor may help, but excessive pressure or poorly secured pipework can also contribute to the problem.\u003c\/p\u003e\n\u003ch2\u003eWater Pressure Matters\u003c\/h2\u003e\n\u003cp\u003eWater hammer can be made worse by excessive water pressure.\u003c\/p\u003e\n\u003cp\u003eWhere appropriate, JR Gas \u0026amp; Water may check the property's water pressure as part of assessing the issue.\u003c\/p\u003e\n\u003cp\u003eIf pressure is too high, installing a suitable \u003cstrong\u003epressure limiting valve\u003c\/strong\u003e may be more appropriate or may be required in addition to a water hammer arrestor.\u003c\/p\u003e\n\u003ch2\u003eLoose Pipework Can Also Cause Banging\u003c\/h2\u003e\n\u003cp\u003eNot every banging pipe is caused solely by hydraulic shock.\u003c\/p\u003e\n\u003cp\u003eNoise can also occur where pipework:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eIs poorly supported\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHas loose clips\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMoves inside wall cavities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eContacts framing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExpands and contracts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHas excessive pressure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA water hammer arrestor cannot physically secure loose pipework.\u003c\/p\u003e\n\u003cp\u003eWhere the cause appears to be structural pipe movement rather than pressure shock, additional investigation or access may be required.\u003c\/p\u003e\n\u003ch2\u003eWhere Can an Arrestor Be Installed?\u003c\/h2\u003e\n\u003cp\u003eDepending on the plumbing layout, arrestors can be installed:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAt washing machine connections\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNear dishwasher connections\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUnder sinks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIn laundries\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNear quick-closing fixtures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOn accessible branch pipework\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAt other suitable points close to the source of the water hammer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAccess and connection type determine whether the installation falls within the standard scope.\u003c\/p\u003e\n\u003ch2\u003eWhat's Not Included?\u003c\/h2\u003e\n\u003cp\u003eStandard installation does not include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOpening walls or ceilings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSignificant pipework alterations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLong pipe runs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRe-piping of the property\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRepair of loose concealed pipework\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePressure limiting valve installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReplacement of unrelated taps or appliances\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCabinet modifications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWall repairs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePainting\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRectification of unrelated plumbing defects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional work can be assessed where required.\u003c\/p\u003e\n\u003ch2\u003eWater Hammer Arrestor vs Pressure Limiting Valve\u003c\/h2\u003e\n\u003cp\u003eThese perform different functions.\u003c\/p\u003e\n\u003ch3\u003eWater Hammer Arrestor\u003c\/h3\u003e\n\u003cp\u003eDesigned to help absorb sudden pressure shock caused by rapid changes in water flow.\u003c\/p\u003e\n\u003ch3\u003ePressure Limiting Valve\u003c\/h3\u003e\n\u003cp\u003eDesigned to control the ongoing water pressure supplied to the property or part of the plumbing system.\u003c\/p\u003e\n\u003cp\u003eSome properties may benefit from one or both depending on the cause of the problem.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan you install a water hammer arrestor?\u003c\/h3\u003e\n\u003cp\u003eYes. JR Gas \u0026amp; Water can install new arrestors or replace existing ones on suitable accessible plumbing.\u003c\/p\u003e\n\u003ch3\u003eWill a water hammer arrestor stop banging pipes?\u003c\/h3\u003e\n\u003cp\u003eIt can significantly reduce water hammer where sudden valve closure is the cause.\u003c\/p\u003e\n\u003cp\u003eIt will not necessarily solve noise caused by loose pipework, excessive pressure or other plumbing problems.\u003c\/p\u003e\n\u003ch3\u003eCan you install one for a washing machine?\u003c\/h3\u003e\n\u003cp\u003eYes. Washing machines are one of the most common applications for water hammer arrestors.\u003c\/p\u003e\n\u003ch3\u003eCan you install one for a dishwasher?\u003c\/h3\u003e\n\u003cp\u003eYes, provided there is a suitable accessible connection point.\u003c\/p\u003e\n\u003ch3\u003eDo I need one on both hot and cold pipes?\u003c\/h3\u003e\n\u003cp\u003eIt depends on which water supplies and fixtures are creating the pressure shock.\u003c\/p\u003e\n\u003ch3\u003eCan high water pressure cause water hammer?\u003c\/h3\u003e\n\u003cp\u003eHigh pressure can contribute to water hammer and increase the severity of the pressure surge.\u003c\/p\u003e\n\u003ch3\u003eCan you replace an existing water hammer arrestor?\u003c\/h3\u003e\n\u003cp\u003eYes. Existing arrestors can be replaced where accessible and the surrounding plumbing is suitable.\u003c\/p\u003e\n\u003ch3\u003eWhat if the noise is inside the wall?\u003c\/h3\u003e\n\u003cp\u003eThe first step is determining whether the noise is hydraulic water hammer or physical movement of the pipework.\u003c\/p\u003e\n\u003cp\u003eIf concealed pipework is loose, access may be required to secure it.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"JR Gas \u0026 Water","offers":[{"title":"1 \/ Within 20 business days","offer_id":46199268606143,"sku":null,"price":349.0,"currency_code":"AUD","in_stock":true},{"title":"1 \/ Within 5 business days","offer_id":46199268638911,"sku":null,"price":399.0,"currency_code":"AUD","in_stock":true},{"title":"1 \/ Within 1 business day","offer_id":46199268671679,"sku":null,"price":449.0,"currency_code":"AUD","in_stock":true},{"title":"2 \/ Within 20 business days","offer_id":46199268769983,"sku":null,"price":599.0,"currency_code":"AUD","in_stock":true},{"title":"2 \/ Within 5 business days","offer_id":46199268802751,"sku":null,"price":649.0,"currency_code":"AUD","in_stock":true},{"title":"2 \/ Within 1 business day","offer_id":46199268835519,"sku":null,"price":699.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/3168\/2415\/files\/374510d8-a8aa-4b36-a19f-2b72fffcad07.png?v=1789286591","url":"https:\/\/www.jrgasandwater.com.au\/products\/water-hammer-arrestor-installation","provider":"JR Gas and Water","version":"1.0","type":"link"}