i dont know how true is this...i was told to do a switch to on and off the pump when I need it coz leaving it on will create pressure till pipe leak...I have been thinking that only when you on your tap the pump works else it is not pumping...

If you pipe cannot stand the pressure whether you on or off when you need it will brust the pipe anyway.

If you have already installed the pump your pipe should be ok

A normal pump also can maintain the pressure by install a pressure switch on the pipe. Infact it is a must for a pump.

I m Reno my Hse at moment. Changing old piping. Want a rain shower but told need pump else tak tar shiok

My new house is using polypipe as well as its joint, stop valve is using metal/copper type, water outlet all using copper type. So I guess this would be ok.

Zean, do we required to mount the water pump using wall screws? Mine is sit on the concrete slab. The plumber just place the water pump on top of the rubber pad & connect all the joints. He said it can be installed this way unless u r on the wooden surface.

Moreover, I heard "Tok Tok" sound when I open my water pump, sound like someone banging the wall. Follow by hissing sound then no more sound but I haven't have a chance to go up my roof to check again whether anything is loosen or else.

tok tok is water hammering or in another words, pressure shock wave movement in the water.. usually happens when the pipes are loose and also

no use the "ladder" method of piping after the pump

Pipes are loose? This is scary... I need to check it out then. If no further hammering sound happen then should be ok, right?

About the "ladder" method. Any picture or diagram to show? I'm kind of noobs.

when i say pipes are loose meaning its not properly attached/supported to the wall /beams and so on..

as you know in the ceiling, the pipes are just on the beams nothing to secure them

hammer is nothing to worry about its just that its annoying and it could also possibly weaken the joints..

here is some interesting info..

http://www.derm.qld.gov.au/factsheets/pdf/water/w8.pdf

when i mentioned ladder..

meaning the output of the pump is not connected directly to the pipes and all, so if there is a shockwave it can travel straight/directly..

something like this...
if you install using 2 step ladder or less the vibration will be captured in the ladder.. area *i read this somewhere can't seem to find it*

so the shockwave will be like "trap/dissipate/won't travel" in the ladder area

The tok tok sound could be due to too high pressure or faulty valve seal of the faucet/valve/taps. The banging will eventually burst your pipe and joints, not the banging but the shockwave sent by the banging.

This usually happen when you on or off the taps. What you can do is to allow air into the pipe to absorb the shock wave. One way is to have a air tank. If no air tank open the lowest tap usually the downstair toilet till it empty the whole piping water and air enter the pipe then shut it. When you turn on the pump and tap begining there will be air rushing out and later it will be ok.

If it is only one tap or two that causes the banging, replacec the rubber inside or replacce the tap.

Another method is install a pressure reducing valve some distance after the pump to reduce the water pressure rushing down the taps.

One other way is to use bigger pipe size like 3/4 than to use 1/2 inch pipe. When you turn on the tap with 1/2 inch pipe the speed of the water flow speeding like bullet and when you shut it it bang on the tap. The banging gives a shock wave throughout the piping system and can damage the joint or burst the pipe eventually. Better get it solve. With bigger pipe size it reduces the speed of the flow.

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Added on April 23, 2012, 12:10 pmWhat cause the banging is when the water flow with high speed it carries the entire volume of water in the pipe moving forward and suddently you shut the tap, the rushing of the water some 2 to 5 or 10 kg of water in the entire pipe lenght stops and bangs on the tap end.

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Added on April 23, 2012, 12:12 pmAir tank will help. Air can be compressed so it absorbs the bang. Water cannot be compressed, it hits and bangs as it collides.

This post has been edited by stevie8: Apr 23 2012, 12:13 PM

What is the water pressure from incoming for housing?

If plumber did not install piping properly, you get hammering sound with high pressure hose. Ask plumber to rectify it. My house using pump, have no hammering sound, and noise from pump is minimal.

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Added on April 25, 2012, 10:00 pmIs not loose as in it will come off, say usually a contractor will put a clamp every 10 feet, but with high pressure got to be shorter, and know where to mount the correct clamps too.

This post has been edited by weikee: Apr 25 2012, 10:00 PM

Hi There,

I have centralised solar water heater feeding to all my bath room. The water pressure for my downstairs bathroom is quite week and was wondering if I can just install water pump for only this bathroom. I don't want to add the standard water heater with pump because this bathroom already has hot and cold water outlet sourcing from the solar water heater.
The other bathroom upstairs are fine because the developer run direct piping for my upstairs bathroom.

Thanks for your input.

Kumar

You can do the same for ground floor bathroom.. (Install direct Piping)

Yes, just go up the water tank, make a T connection to where the direct pipe supplying the water tank. Closed off and cut the tank supply to your downstair bathroom and connect to this T.

Hi all, got some question, if ther is no electirc supply, the pump still can flow water from intake of higher pressure to output of lower pressure?

Can! Zein will explain to u...how to do it..u just need to do a bypass from the main pipe...

This post has been edited by coconutzz: May 23 2012, 02:46 PM

Well, when i shifted to my new place, the water pressure was lousy as hell, then i got my contractor to do the bypass to increase the pressure to 3 toilets and also the garden pipe (yes, the water supply to the garden is coming from the tank for my house instead of direct).

The result was fantastic and it cost me RM300 only. Scope of works incl:

2 pcs of one way spring loaded brass valve,
T joints
high quality PVC pipes

The work took 4 hours to complete incl waiting for the glue at joint area to completely dried up and testing as well. Now am enjoying my daily rain shower and the garden tap pressure is strong enuff so much so i dun need to use water jet pump to wash my car. In addition, i dun use any electricity...




This post has been edited by Scissorshand: May 24 2012, 10:48 PM

can you rotate your picture? cos it hard for us to read.

download it and use your pics viewer to rotate lor

right; yeah, i`m lazy like you ..i rather see it at readable position than twisting my head clockwise to read. Can you pls twist yr head clockwise pls.