If you don't want scale to form up on the internal surface of the pipe, avoid the G.I or copper pipe.

Go for plastic pipe. Plastic pipe - HDPE, PPR & PVC are widely used. PPR is gaining popularity recently.

For HDPE, the fitting for "T" & elbow are 1 size smaller, if you have multiple bend or joints, be cautious because that will cause a significant pressure drop. A lot brand have HDPE product - Sansico (Hansen) , Kindraco, BBB, etc .

Avoid ABS at all cost. ABS , after a few year, leaking will start to appear. Even most of the manufacturers already gave up the ABS product.

Dont waste time and money using superior products if is for a small section.

Using the existing pvc pipe if done properly by a good plumber is as good a replacement.

Having said the above, no product will last forever !

the stuck material not form the pipe, its the water quality enter your house. you may need a big filter for incoming water

ooops， but i always tot so aiyo

I 100% agree with you. I just want to point out that the pressure does not drop, the flow rate does. After all, 3 bar through a straw is the same as 3 bar through a 20 mm pipe. But you wouldn't be satisfied with a shower with the water coming from that straw.

I notice that piping in M'sia is done without any concept of water flow rate. One small pipe branches off to 2 small pipes, or an entire bathroom is fed by a small pipe. No wonder as soon as you turn on a tap, the shower water slows. And then to get a better flow rate, add on a booster pump, and set the pump to high pressure. No wonder everything starts leaking after some time.

Just think of a bucket of water dumped on your head, versus that same bucket hanging over your head with just a small hole dribbling water. Which would you rather bathe in?

My conclusion is that water supply pipes should be well designed also, with as few turns as possible, and with proper sizing in mind, no matter what type of material is used.

I suspecting my internal pipe is leaking but just don’t know where (I.e. bathroom, underground from outside supply into house). Can recommended pipe leaking expert who is reliable to help troubleshoot and fix it? Location is around Rawang area.

Generally most plumbers will recommend replacement of the entire piping unless he can try to detect the leak without a guarantee that it is the spot. You have to take risk as every job is different. Depends whether he wants to put in the extra effort.

Two months ago I notice the drain outside my house is alway wet even on a hot day. Did some investigation and found that the elbow was leaking.

DIY a bypass using the same material and problem solved. Dont have to use high grade replacement pipe for a small section. Some high profile 'plumber' think that only high grade can solve a problem.





Sorry no plumber to intro as most my house things I diy unless is major.

This post has been edited by mini orchard: Oct 17 2022, 09:16 AM

PVC easiest to do and cheaper . . but get the quality ones . Class 7 if not mistaken. The thickest and strongest PVC pipe.

Replacing entire piping for the whole house or only the suspected part (in my case is the pipe running from ground floor bath room to water tank on roof at first floor)?

If can identify the leak spot, then normally is just replacing the area.

Not many would want to do the entire house piping unless is no choice, if is a very old property.

Is not just replacing from the main to the reserved tank but also from the reserve tank to the the various bathrooms for a complete overhaul of the entire system.

Thanks for the input. Guess it’s gonna be slow and painful process of troubleshooting

Residential choices:- HDPE Pipes, ABS pipes, PPR pipes (PPR can also be used for hot water) and copper pipes (espensive)

Hospital grade : Stainless Steel

is buteline reliable?

+1 on buteline

Found a contractor doing my current leaking, they gave me PPR pipe, joints are heated instead of glued..

Are these lasting?

Ya, definitely last longer if they joint correctly . Ask them do a leak check before done. Theoretically, if using cold water indoor it can last longer 30 years and more. Just one thing PPR cannot stand more than 50’c or 60’c water.

I plan to rebuild the whole house. Previously have facing issue water leakage. Currently, I need to put the water pumping machine, the contractor proposed some fiber made the water pipe and claimed that good for the long-term water pressure via the pumping. Is that true? If not, what is the best should be?

What u choose in the end?

My Google research indicates pex pipe if u do whole house water heater, if not normal or or high grade pvc is fine.

My plan is all the pipe explsoure to the sun using the SS pipe, cold water using the buteline PB-1 and hot water not yet decide PPR or copper, need to see the price.

I just thinking cold water still using Pb-1 or choose PPR pipe. Make the whole system in PPR system.

I also worry PB-1 spare part may dificult to find in future.