How to install a mixing valve

A short instructional video on How to install a mixing valve, hot and cold water system. Also available on central heating systems.
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[@judin]

Perfect! Just what I need to sort out my cold bath. Thank you 👌🏻

[@fuchsiafables7558]

You make this look so easy...and you did it all without swearing! Respect!

[@DoItAllDan]

Fuchsia Fables haha thank you, it's never easy and u do learn to throw your voice🤣👌🏻

[@bronxer78]

Thank you for this tutorial!

[@rob5420]

Cheers mate got one of these on the bath in my new build and it was set really low now I can have a hot bath

[@DoItAllDan]

Nice one, I'm glad it helped thanks for the support 👍🏻

[@soumendrasharma5187]

So good

[@plumbingheatingandgas8545]

Great video really helpful keep it up happy subscriber.

[@DoItAllDan]

Thank you for the support

[@jetto234]

Thanks for the video, We have one of these under our bath in a new build, I’m looking to fit a bar mixer shower. Can I just just tee off the hot feed that comes from the mixer valve straight to the shower?

[@lennykelly9952]

Hiya the answer to your question is yes,it’s not designed to be a mixer it’s actually called a blender valve take a branch off the mixed hot but bring a cold as well to your shower mixer,as I say it’s not a mixer but rather an anti scald device if it’s very hot it just lets cold in to bring the temperature down on the hot.just make sure it’s near enough to the basin.

[@fionaniutolotogia1664]

When fitting a single impeller shower pump (low hot water pressure) , do you fit it after the mixer or before the mixer on the hot supply ?

[@DoItAllDan]

Hi there, generally speaking in my experience it would be fitted after the pump from the hot water circuit. However, there is always that chance it my be different, so with that in mind I would ALWAYS check the manufactures instructions either what is provided with the pump or research the model online. It's good practice to check the instructions even someone with my experience, I hope this helps guys. Please consider subscribing Thanks

[@evieemaya88]

Great video, just found your channel. I believe I have the same valve, how do I adjust it to get the temperature hotter?

[@h0llytr0n]

Hi, thanks for this video! I was trying to understand if a valve like this can be useful in a system where the hot water input varies hugely (say 40 degrees one day and 80 another) but I'm guessing these just deliver a ratio of hot to cold based on the setting, rather than adapting to the temperature coming in. Thanks for the help.

[@DoItAllDan]

Holly G that's correct holly, they only adjust what is already at the inlet.

[@hiitdon8630]

👏🏾👏🏾👏🏾👏🏾

[@scottdang4704]

This effectively connects hot/ cold water systems, which I think is a problem. When the spigot is closed and both inlet valves are open and one side of the system loses pressure (such as while being used) the other higher pressure side will have will flow up the opposing line. Example why this is a problem-- My uncle set up one of these for a single valve faucet however one day while my father was using the cold water in a different restroom I was using the toilet and flushed only to notice the water that was filling up the toilet was hot.

[@DoItAllDan]

Depending on where on the system this was used it may be the fact that the toilet was pl Piped up wrong in the first place, in all fairness there should be a pressure reducing valve va installed where needed also personally I've never had an issue with these valves and they are rated very reliable 👍🏻👍🏻

[@bertdunsford]

Hi I have a roof mounted Solar HWS and a booster pump with a flow control valve that is mounted 2.5 m below that tank. Will this mixing valve work? Thanks

[@DoItAllDan]

You will have to check the manufacturers recommendation for that I'm afraid I would give them a call prior to purchase. Thanks

[@TheSlipperyNoodle]

I the purpose of the pressure reducing valve in this scenario to basically serve as a check valve and to keep the hot water out of the cold tap?

[@DoItAllDan]

Not at all I'm afraid the purpose of the valve is to reduce the temperature mixture on delivery to the hot tap 😁👍🏻

[@TheSlipperyNoodle]

The purpose of the pressure reducing valve before the mixing valve?

[@MrJackyJee]

Yeah good question. I’m looking to install a mixing valve with mains pressure cold and a single 1.5 bar pumped hot. So I’m thinking of installing a pressure reducing valve on the cold and set it to 1.5 bar. Hopefully this will balance the two and will work fine. Never tried it before.

[@MrJackyJee]

Update. Works perfectly fine.

[@joriv1597]

Have you had any issues with hot water going into the cold water line through the whole house?

[@DoItAllDan]

No problems at all

[@MeriRF]

I had one of these fitted so I could wash my dogs outside in the garden when it's cold. But now it's warm and I need to be able to water the lawn. If I adjust the temperature, can I have just cold water coming out or will it still be mixed to some extent?

[@DoItAllDan]

Yes you can remove the top cap and use an adjustable spanner to turn fully in one direction (depending on what orientation it’s installed). 👍🏻

[@Mrlistenandlearn]

Hi my thermostatic valves are limiting hot water how do I amend this or will I have to call in a plumber.

[@DoItAllDan]

If the valves are sticking in position, I would recommend a new valve. Many plumbers would say gently tap with a hammer. do not do this! In some the pin is very fragile and can spring out spraying water all over the shop. 👍🏻

[@Z901Z]

How do you know what the temperature is when setting?

[@DoItAllDan]

You will need a probe to test at each outlet, it does come factory set to a pre determined temp

[@bobbyovenell]

Can you adjust the temp on the mixer while it’s connected ?

[@DoItAllDan]

Yes 👍🏻

[@hard1yvisib1e21]

Mine is a new build installed two years ago but the valve won’t adjust. Can they seize up

[@DoItAllDan]

They can but over a longer period make sure the locking nut is loose

[@step7steveX]

So I take it you could do the same thing if your were doing it for an outdoor tap....?

[@DoItAllDan]

In speaking yes however not many people have a hot outside tap make sure that the valve is on the inside or at least boxed In securely

[@step7steveX]

@@DoItAllDan thank you! Yes I was planning on using it as a shower to wash my dogs.. I was planning on putting the valve underneath my sink inside the house and use a copper flange to take the water to the outside.. I am doing this because a plumber quoted me 230 pounds just for the valve when I can find the same at screwfix for 60 or so.. mental!

[@DoItAllDan]

Yeah that’s a bit high 😂 I always say wet works give it a go yourself but gas or other fuels leave to us haha hope it goes well for you

[@kyletompkins4137]

39 to 43 degrees is what temp the tmv should be

[@DoItAllDan]

It's factory set 👍🏻 but should always be checked

[@kyletompkins4137]

@@DoItAllDan doesn’t matter to much in domestic I guess but I’n commercial if they are over 43 we have to adjust them it’s in some legionella regs or summin idk I don’t really see the point

[@cashalinn2517]

So when its a new valve, and its been installed by a pro but the highest temperature is still not hot enough...I want a scalding bath. How do you remove and replace these...? Will it work if I cut and cap off the cold water. first person to show us all how to do will make a fortune..lol

[@illuminate06]

I recently had seen a tmv compression connected to plastic pipe work but I thought it had to be connected to copper pipe? I guess I'm wrong?

[@DoItAllDan]

It can be connected to plastic as long as it has a firm connection on the inserts 👍🏻

[@illuminate06]

@@DoItAllDan thanks for your reply and shared knowledge, means a lot. I'm training to become a plumber but just working two days a week with a bathroom fitter. I hve so many questions but don't want to irritate my supervisor 🤣

[@soumendrasharma5187]

So eagi

[@markfoley6936]

This is a dumb question but how do you actually get the cap off to get into the valve to turn it.😂

[@DoItAllDan]

Nothing ever dumb 👌🏻 some pop off but most unscrew 👍🏻

[@iainbremner8909]

'Left for hot, right for colder'? A little confusing in terms of the red and blue dots, Can you explain using the terms clockwise/anticlockwise please?

[@DoItAllDan]

Refer to the instruction manual provided, for entry points. Clockwise is right anti is left?

[@arreat123]

I get about 9 minutes of hot water from my shower and then it goes cold/lukewarm, could that be an issue with the mixing valve?

[@declanbrunton5572]

What boiler have you got

[@Benobied]

You forgot to add check valve to prevent mixing hot water with cold water when it’s opened otherwise your heating system will keep working

[@DoItAllDan]

No it doesn’t work like that, it’s nothing to do with the heating mate.

[@addaplaster4976]

Good job. Do more jobs please