Teral Ab25x254tpc. Now headache want to add the additional buffer tank or not.

https://item.taobao.com/item.htm?spm=a1z09...._u=j2qli4at83dd

RM150 is too expensive. I am using 4L for corner terrace house.

Get 370w is suffice. Buy Pressure Reducing Valve with meter around RM 25-40 to control pressure. For old house, start with 1.5bar. Maximum 2.2 bar for old house.

From a DIY with experience in installing, modify piping, service pump (rewinding coil, change m.seal & bearing), repair PS...

Tq for your feedback. I think will not install the water buffer tank. Just share with you all, i use to work at KL. Now i relocate back to Ipoh i found that in Ipoh all this home appliance la, car spare part la, computer la if buy at here really expensive a lot compare to KL due to very less competitive here.

Hello Guys,

Is this diagram correct?

For kitchen sink and washing machine will be use direct water from main source. Bathroom will use water from tank.

I am not sure either use ball valve/butterfly valve/stockoff.

Can use water from tank for kitchen sink and washing machine? Is it safe? If i am not mistaken, i have read from this thread/somewhere for kitchen sink/washing machine is advisable to use water direct from main.
UPDATE: My contractor said building by-law not allow to use water from tank.

Thanks.



This post has been edited by xphr3ak: Feb 26 2020, 04:57 PM

I'm looking for water pump recommendation for my parent's house. Its a single storey and have 5 bathroom with rain shower. Is cm3-5pm1 sufficient or any other recommendation?

You need a check valve (one way valve) at your bypass line after ball valve 1. This is to prevent your pump from pumping backwards i.e (pumping after ball valve 3 into the bypass line) and creating a pumping loop.

Hope it makes sense.

Hi, i just installed scala 2 and they did a bypass from main also.. i though they gonna do bypass after water tank.. now without using pump the pressure quite good already haha.. Im just afraid that the pipe cannot tahan from the pressure from main. Also im in new taman new house and not many people yet.. issit ok to just leave it like that or change the bypass after water tank?

Quickly change it! Your conceal pvc pipes will burst soon!

standard main water supply ard 2 - 3 bar only, max i seen 4bar. cant burst PVC pipe.

Grundfos CM3-5pm1 rated 4.6 - 4.7bar even stronger, PVC pipe no problem

It is not the PVC pipe that burst, it's the PVC elbow joints I'm talking about.
It couldn't hold the pressure.

Hi guys
I have a question and hope to hear from you if you have any idea to help me solve this problem.



My water tank is on the 5th floor and my unit is on the 3rd. Problem is the water outlet from the water tank to my unit needs to climb over the wall and according to the plumber, there is a risk of air trap when the water level in the tank runs lower than the outlet. The 'climbing' can cost a lot of problems. He asked me to instal water pump which costs RM1800. Is this true?

Thanks!

Would like to ask a question - Recently due to the water cut, I faced airlock issues for most of the pipes that goes through tangki...

Luckily most of them are resolved maybe because water heater draw the air out quickly?


Issue - My washing machine and one of the hand wash kitchen basin goes through tangki as well and the airlock does not seems be resolved.

Tried every method to draw the Air out but still, water pressure is too small...

Any idea getting this pump will help to draw the air out?
https://www.lazada.com.my/products/50-offdc...s445463966.html

Thanks...

This post has been edited by thankyou: Sep 22 2020, 12:24 PM

Hi, I'd like to ask if it's normal to have low water pressure at high rise?

Can use class 7 pipe + inline ball valve to regulate the pressure so it will be good pressure and not excessively high.

RM1800 seems on the steep side. I would say the risk of having the water running out on the main tank is rather low but good pump will have overheat protection. Your situation where by the water tank is higher than the unit is easy to pump so a small 150-200W pump will suffice as your water doesnt need to fight against gravity that much.
The entire surface area of the upstairs tank is easily 1-2 sq meters (if small tangki) is enough to push down the water into the 1" pipe.

A "150W HITACHI WM-P150 XS AUTOMATIC CONSTANT PRESSURE WATER PUMP" should run you around 660 for the pump only. Key is automatic pump so no need to turn on turn off.

You can backflow it from another outlet using water hose (tap to tap)?

Old high rise >15 years yes, iron pipes corroded and from 1" become 0.2" diameter left for water to pass thru. It could also be the WH filter clogged/flexi pipes clogged. Usually management will replace with new piping.

New high rise within past couple years no.. water pressure is so good I need to max out the WH to have enough heat to take bath.

This post has been edited by ceo684: Sep 22 2020, 08:51 PM

Thanks Bro. I actually shared similar thought on the possibility of the tank running empty but the risk is still there. Suppose the tank is empty and the pipe is filled with air, when the water tank is refilled with water again, the water flow will be blocked by air in the pipe. That's why I was told to install pump to help draw out air trap in the pipe so water can flow again. Is this true? RM1800 is unreasonable to me! I am still trying to survey what is in the market.

What is the difference between class 6 and class 7 pipe btw? Which one is more suitable and durable for apartment/home use?

@Zheilwane, any comments/recommendations from you?

Grey PVC pipe the higher the class the tougher the pipe due to thicker material. Class 0 is low class and should only be used for light duty (aka aircon drain pipe). If wanna bury in concrete use class 7 direct, its not that expensive but will save a lot of headache later on.

For new house, does bypass or installing pump void the defect / warranty ?

Depends on the pump type. Cheap pump will get water jetting when pump automatically switch on and off. it is because the pressure switch turn motor on and off abruptly. When motor is turned on the pressure build up in pipe but then the water out is less casing pump to switch off and when pressure low again the pump on and so on, causing water jetting. More expensive one have bigger bladder tank thus less water jetting effect.

Nowadays, high end pump is using inverter to vary motor speed, thus the pressure in pipe is consistant. This will let water flow smoothly. The inverter type even no need to have bladder tank.

The RM1800 probably this high end type. You need to ask. I know that Grundfos Scala2 is around RM1700~1800. This is real constant pressure pump.

It is best to ask the developer since probably different developer has different tern and condition. Since house is new, you can easily contact the person in charge, right?