Oct 14 2012, 11:03 PM
QUOTE(stevie8 @ Apr 20 2012, 08:07 PM)
Normally and logically this is pipe sizing for home in malaysia.
1. The incoming pipe from water work before meter is 3/4 inch.
2. Going into the meter is half inch size with a lenght of approximately 1 foot in length.
3. Due to high pressure 3/4 inch pipe before meter it is logically to have 3/4 inch pipe from meter into the house than to use half inch pipe so that the pressure is not affected. It serve no purpose to have bigger size pipe than 3/4 as it is not going to help increasing the in coming pressure neither will 3/4 inch pipe reduces the water pressure even when it branches to kitchen and up to tank. But having bigger than 3/4 size pipe does no harm.
4. From the tank to the bathroom is a different story. Depending on how many per outlet from the tank serves the pipe from tank has to be at least 3/4 size pipe per bathroom as it is place flat.
5. Then as it come down to the bathroom with the help of gravity the rush of water the pressure increases so reduced to size of pipe to half inch is ideal. It is not necessary using biger size like 3/4 inch pipe. By doing so you got the extra unncessary work to have pipe reducer from 3/4 inch to half inch as the tap and outlets accepts only half inch pipe. More so when it is concealed you dont want to hack bigger than necessary channel for the pipe.
Hi Stevie,1. The incoming pipe from water work before meter is 3/4 inch.
2. Going into the meter is half inch size with a lenght of approximately 1 foot in length.
3. Due to high pressure 3/4 inch pipe before meter it is logically to have 3/4 inch pipe from meter into the house than to use half inch pipe so that the pressure is not affected. It serve no purpose to have bigger size pipe than 3/4 as it is not going to help increasing the in coming pressure neither will 3/4 inch pipe reduces the water pressure even when it branches to kitchen and up to tank. But having bigger than 3/4 size pipe does no harm.
4. From the tank to the bathroom is a different story. Depending on how many per outlet from the tank serves the pipe from tank has to be at least 3/4 size pipe per bathroom as it is place flat.
5. Then as it come down to the bathroom with the help of gravity the rush of water the pressure increases so reduced to size of pipe to half inch is ideal. It is not necessary using biger size like 3/4 inch pipe. By doing so you got the extra unncessary work to have pipe reducer from 3/4 inch to half inch as the tap and outlets accepts only half inch pipe. More so when it is concealed you dont want to hack bigger than necessary channel for the pipe.
Sorry, I am a newbie here....
Have some questions and hope you can help to answer:
1. Incoming pipe before meter= 3/4", into meter=1/2". Would it be logical to use 1/2" pipe from meter into the house? What I mean is, since the pipe going into the meter is already 1/2", and if we use 3/4" after the meter, the water pressure will still be the same regardless of whether we are using 1/2" or 3/4"?
2. looking at item num 4 and 5, what type of pipe is normally used? is it pvc or poly?
3. Any difference btw grey and white PVC?
Hope you can give some advise.
Thanks.
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