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On 8/1/2021 at 6:39 PM, Mkl22 said:

I had mine for 20years in the old place maybe used it 1-2 times. The rest of the time was to exercise the mixer so that it doesn’t jam on the hot water side. 
maybe some do use it. But I really cannot think of anytime I would use it again. 

anyway all these years I have been using only cold water to wash hands and face. Kinda feels weird to use warm water. I guess only in temperate countries where the cold water is really cold does the mixing of hot water comes in. 

For the hot/cold mixing, now I plan to put this kind of thermostatic mixer near the water heater output pipe and mix with cold water. 

https://shopee.sg/【T-H】Bathroom-Adjustable-Thermostatic-Mixer-Valve-Brass-Water-Mixer-Hot-Cold-Water-Mixing-Temperature-Control-Valve-For-Home-Water-Heater-i.101773189.12852549960

Then I'll cut/block the existing cold pipe and reroute the "mixed" output to it to my MBR toilet. So that cold pipe essentially bcums warm (due to the mixer. It'll go to wash basin, shower, etc. The existing hot pipe will be blocked. So no more cold water, just a single pipe with warm water. I'm expecting turning on the tap initially will get cold water, until the warm water comes in.

I'm just wondering why run 2 sets of pipes when a single "warm" pipe will do ? Is there anything I'll be missing ? I don't think I'll miss that "cold" pipe. [laugh]

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All premixed at source and same temperature - flushing system will waste hot water, maybe wash body temperature OK, wash behind too hot, wash hands too cold.... 

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2 hours ago, Kb27 said:

For the hot/cold mixing, now I plan to put this kind of thermostatic mixer near the water heater output pipe and mix with cold water. 

https://shopee.sg/【T-H】Bathroom-Adjustable-Thermostatic-Mixer-Valve-Brass-Water-Mixer-Hot-Cold-Water-Mixing-Temperature-Control-Valve-For-Home-Water-Heater-i.101773189.12852549960

Then I'll cut/block the existing cold pipe and reroute the "mixed" output to it to my MBR toilet. So that cold pipe essentially bcums warm (due to the mixer. It'll go to wash basin, shower, etc. The existing hot pipe will be blocked. So no more cold water, just a single pipe with warm water. I'm expecting turning on the tap initially will get cold water, until the warm water comes in.

I'm just wondering why run 2 sets of pipes when a single "warm" pipe will do ? Is there anything I'll be missing ? I don't think I'll miss that "cold" pipe. [laugh]

How long will be the pipe runs. 
IMHO like I mentioned before for sinks it’s a waste of time. Unless you really use a lot of water at the sink every time. Cause to wash hands, it is at most 1l and by the time the warm water is flushed thru you are more or less done. 
Also you need to have the storage heat always on. That can consume quite some power. The biggest energy consumption in the house will be heaters and coolers, like water heater, refrigerator, Aircon. 
heating water takes a lot of energy. 
is the local room temp water that cold for you to need to do so? 
my suggestion is to measure how much water you use in washing hands and typical use at the toilet sink. Can be easily done by placing a basin and then measure the amount. 

Edited by Mkl22
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2 minutes ago, Mkl22 said:

How long will be the pipe runs. 
IMHO like I mentioned before for sinks it’s a waste of time. Unless you really use a lot of water at the sink every time. Cause to wash hands, it is at most 1l and by the time the warm water is flushed thru you are more or less done. 
Also you need to have the storage heat always on. That can consume quite some power. The biggest energy consumption in the house will be heaters and coolers, like water heater, refrigerator, Aircon. 
heating water takes a lot of energy. 
is the local room temp water that cold for you to need to do so? 

About 4m run to the wash basin. Same pipe also tee off to the kitchen single valve tap, but that's not important. 

Bidet tee off, if too hot for washing backside, then I dial down the temp. 😂

Waste of hot water in one toilet small cistern, but probably not too much.

I'll try first. If too much electricity, then I revert back.

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2 minutes ago, Kb27 said:

About 4m run to the wash basin. Same pipe also tee off to the kitchen single valve tap, but that's not important. 

Bidet tee off, if too hot for washing backside, then I dial down the temp. 😂

Waste of hot water in one toilet small cistern, but probably not too much.

I'll try first. If too much electricity, then I revert back.

I kaypoh and did some calculation. https://rechneronline.de/chemie-rechner/mix-temperatures.php

so with the water heater set at 70c to get 38 you need approx 25% hot water. 
so what you can do is roughly calculate how much water you use. Then 25% of that is hot water. 
 

14 minutes ago, Kb27 said:

About 4m run to the wash basin. Same pipe also tee off to the kitchen single valve tap, but that's not important. 

Bidet tee off, if too hot for washing backside, then I dial down the temp. 😂

Waste of hot water in one toilet small cistern, but probably not too much.

I'll try first. If too much electricity, then I revert back.

Wow that’s long. I guess in the end, how much more electricity will you be willing to pay a month. I would think it will easily be an extra 2-3kwh of power a day since you  leave it on 24/7. 
 

 

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old pipe was dripping in 2 places

so I decided to cut that leaky section and replace with a full bore valve and a spin down filter

 

 

pipe3.jpg

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Spent the long weekend getting some maintenance fixes 

Some tips about plumbing:

- either use brass - more ex throughout

- or good PVC plastic

- use large bore copper pipes to carry the water in, you won't regret it and you'll enjoy the hotel like experience of good water pressure 

- don't use cheap tin plated water closet pipes, which will corrode and leak

make sure the pipes are accessible and easy to change too

 

As for the cistern flushing systems use a modular one that's easy to find and change. You'll be shocked about the cost of a replacement module for a fancy brand

 

Likewise for the water heaters, expose them, or make sure the access panel is large enough and there is a light source

Its best to get a storage tank heaters and you may wish to have a few around instead of a central one, so if it goes bust you can always use the other toilet / heater

 

Storage tank heaters won't affect your water pressure unlike instant heater, and make sure the power switch is 20A enabled and in a dry area 

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57 minutes ago, therock said:

Spent the long weekend getting some maintenance fixes 

Some tips about plumbing:

- either use brass - more ex throughout

- or good PVC plastic

- use large bore copper pipes to carry the water in, you won't regret it and you'll enjoy the hotel like experience of good water pressure 

- don't use cheap tin plated water closet pipes, which will corrode and leak

make sure the pipes are accessible and easy to change too

 

As for the cistern flushing systems use a modular one that's easy to find and change. You'll be shocked about the cost of a replacement module for a fancy brand

 

Likewise for the water heaters, expose them, or make sure the access panel is large enough and there is a light source

Its best to get a storage tank heaters and you may wish to have a few around instead of a central one, so if it goes bust you can always use the other toilet / heater

 

Storage tank heaters won't affect your water pressure unlike instant heater, and make sure the power switch is 20A enabled and in a dry area 

Now many contractors don't use normal grey pvc pipes or copper pipes anymore. They have switched to PPR (light green) pipes and stainless steel pipes. Both need specialised tools to (heat for PPR) and crimp. DIY no choice got to stick to old technologies. 

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Supercharged
1 hour ago, therock said:

Spent the long weekend getting some maintenance fixes 

Some tips about plumbing:

- either use brass - more ex throughout

- or good PVC plastic

- use large bore copper pipes to carry the water in, you won't regret it and you'll enjoy the hotel like experience of good water pressure 

- don't use cheap tin plated water closet pipes, which will corrode and leak

make sure the pipes are accessible and easy to change too

 

As for the cistern flushing systems use a modular one that's easy to find and change. You'll be shocked about the cost of a replacement module for a fancy brand

 

Likewise for the water heaters, expose them, or make sure the access panel is large enough and there is a light source

Its best to get a storage tank heaters and you may wish to have a few around instead of a central one, so if it goes bust you can always use the other toilet / heater

 

Storage tank heaters won't affect your water pressure unlike instant heater, and make sure the power switch is 20A enabled and in a dry area 

I spent a few hours changing my basin mixer.... still good condition but one of the flexi hose below the sink had been over-bent in order to fit into an awkwardly positioned water valve outlet, the bent part eventually had slight leak.

Redid the compression fitting for both hot/cold valves to turn them to a better position.

Sad thing is that the replacement mixer turns out to be not as suitable as the original, in terms of size.

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Twincharged
4 minutes ago, t0y0ta said:

I spent a few hours changing my basin mixer.... still good condition but one of the flexi hose below the sink had been over-bent in order to fit into an awkwardly positioned water valve outlet, the bent part eventually had slight leak.

Redid the compression fitting for both hot/cold valves to turn them to a better position.

Sad thing is that the replacement mixer turns out to be not as suitable as the original, in terms of size.

I gave up using a mixer for the basin. Never switched to the hot water side. Even if I did, it was to exercise the mixer to make sure it doesn’t jam. 
it simply takes too much water flow to get warm water in the basin. 

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Supersonic
On 5/16/2022 at 5:49 PM, t0y0ta said:

I spent a few hours changing my basin mixer.... still good condition but one of the flexi hose below the sink had been over-bent in order to fit into an awkwardly positioned water valve outlet, the bent part eventually had slight leak.

Redid the compression fitting for both hot/cold valves to turn them to a better position.

Sad thing is that the replacement mixer turns out to be not as suitable as the original, in terms of size.

Care to share a photo plus more details, maybe the creative MCFers could provide some ideas 😁

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Supersonic
1 hour ago, Volvobrick said:

Came across yesterday. If you need help can call this (don't visit wrong site hor!) :

125926296_797034214176068_803282105031900951_n.thumb.jpg.31e13ba01e7282aac37ac2c6c6cf5cb2.jpg

This is not in Singapore. is there a branch here?

 

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Tonight being Saturday night, my kitchen flooded. Of cuz it chose the worst day/time.

I knew the cause would most likely be the discharge pipe as I've cleared it before.

My worse nightmare came true, pipe got clogged, and I decided to use pressure washer. The last time it worked and flush gunk down the pipe. This time it didn't and flood back upwards. Now it looks like liquid cement, froth and all that stuff and it stinks.

The gunk was too much and it clogged the entire pipe.

I poured in acid. It didn't work.

In my panic, I ordered on Shopee a horobin. It's supposed to push stuff forward into the pipe. But it wouldn't come till at least Monday.

I decided to take a stiff hose and poke at it, near the bottom, hoping to puncture some holes and let the water pass through. It worked ! The water level drops and expose the gunk.

I think I had better remove the gunk and not push it forward, or it may cause more problem and completely clogged the pipe. Took an old unused ladle and zip-tied to a short pole, and start digging up the gunk. I collected quite a bit (in the red plastic bag) and flush the remaining into the pipe.

Finally, it's cleared.

Cleaning up, I find the hose and ladle oily. I think it's bcuz my wife and tenants like to deep fry and lots of oil get dumped into the pipe. Finally, these stuff coalesce into a sticky mess and clogged the pipe. Perhaps I should have used alkali instead of acid, as alkali is used to turn oil into soap.

Need to wear gloves and eye protection when using these stuffs. And I cancelled the horobin order. 😁

flood.jpg

hose.jpg

trash.jpg

ladle.jpg

clear.jpg

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100% coagulated oil. 
why dump oil into sink. A very bad habit. Use newspaper or paper towel to wipe. Those who continue to dump I will make them shove their hands into the gully hole to clear. I hate clearing such clogs. Thus I religiously  clean all my oil from pots and wok before washing . I throw all my oil into the bin. 
 

next step buy a inspection camera and probe to see how much gunk. Alternatively, pour hot water frequently. 

Edited by Mkl22
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