Looking to buy small water hammer arrestor in Bangkok

[AlexHanh]

Hello, I'm new to Thailand and the forum and am looking to buy a 3/4" water hammer arrestor (like this: https://www.amazon.com/Watts-15M2-B-Lead-Free-Hammer-Arrestor/dp/B00NBR72Q4/ref=sr_1_2?s=hi&ie=UTF8&qid=1470895559&sr=1-2&keywords=watts+water+hammer+arrestor). Does anyone know where I might find one in Bangkok? Thank you.

[Gary A]

You can easily make your own. A piece of 4 inch PVC with a cap glued on top and reduced down to 3/4 to "T" into your water supply. Place it upright and you are finished. It will be fine for a long time but if the air is finally absorbed, it is a simple matter to shut off the water and drain it. Put two valves in the bottom and that will make it easy to drain. One valve between the  water supply that turns on and off and another outlet valve above that to drain the air cushion.

[AlexHanh]

Thanks Gary A, I'll give that a go.

[bankruatsteve]

Just curious.... what function does this provide and why would it be needed?  

 

Cheers

 

[Gary A]

When you quickly close a faucet, the system receives a shock called water hammer. That is hard on the pipes and joints as well as making a noise. The added air cushion eliminates that problem. Some water systems use positive displacement piston water pumps. Without an air cushion, the water pulses. It also helps with the occasional spit of air from a faucet. It is a cheap fix and no way has any detrimental effects.

[manfredtillmann]

On 8/11/2016 at 6:55 PM, Gary A said:

You can easily make your own. A piece of 4 inch PVC with a cap glued on top and reduced down to 3/4 to "T" into your water supply. Place it upright and you are finished. It will be fine for a long time but if the air is finally absorbed, it is a simple matter to shut off the water and drain it. Put two valves in the bottom and that will make it easy to drain. One valve between the  water supply that turns on and off and another outlet valve above that to drain the air cushion.

a good way and easy to maintain, but ... where would one live in thailand to have sufficient water pressure to create 'hammer'?

[tifino]

On 8/12/2016 at 0:33 AM, bankruatsteve said:

Just curious.... what function does this provide and why would it be needed?  

 

Cheers

 

i reckon what your'e trying to ascertain is whether his requirements are for the mains/line buffer type, as in the photo,

or the inline type? 

The inline type, we use for each kitchen/laundry tap, and washing machine taps,  \and the the one in the photo we hav one installed in the main supply pipe coing into the house (we had problems with battering pipes, everytime the neighbour in the next building used HIS washing machine) This buffer ype countered the problem we had was an undersized mains pipe, coming onto the sub-divided property, the pipe was split-purposed to feed our individual meters.

[AlexHanh]

We pump water from a well and into an above-ground tank behind the laundry, then up two floors to a tank on the roof. The water hammer (which goes "boom!")  is caused by the water pumping into the 2,000l roof tank, which the 3/4"pipe attaches to directly. One friend suggested a pressure accumulator tank, another a water hammer arrestor, and I would like to try the cheapest option first. I'm new to plumbing as well and am feeling my way here.