Improving pressure on multiple showers

[Exodus]

Hi I am running 4 showers simultaneously as I have a small personal training center. But when more then 1 shower in being used the water pressure seems to drop. I am running an unvented 24kw 300 litre direct hot water tank. And my cold is coming straight from the mains. My cold water pressure seems to be good. I have used 15mm piping for the showers and suspect this could be the problem? Could anyone with better knowledge please help. If you need any more info let me no.

 

[Exodus]

Never trust a pole that had done your friends tiling claim he's a plumber lol G3 certified it is.

 

[dave1]

Wow, not good!

 

[joni os]

Its not all bad. Tank looks nice and plenty room to work.

 

[tolly]

I love how he put the discharge on the floor then still put in the tundish just in case you cant see...quality

 

[ShaunCorbs]

I love how he put the discharge on the floor then still put in the tundish just in case you cant see...quality

(bucket) 😀

 

[Exodus]

What TMV would you recommend?

My cowboy plumber fitted me a weird thermostat that looked something like a central heating thermostat and it was killing my shower pressure. I took it off and put a straight T on it and the pressure went up dramatically is their a tmv you would recommend that wouldn't kill the pressure and flow rate. I was looking at one on screw fix for 49.99 that looked good. I am running 3 showers with it.

 

[Exodus]

I love how he put the discharge on the floor then still put in the tundish just in case you cant see...quality

Hahahahah this killed me!

 

[Dotty]

Threads merged.

 

[Ch4 plumbing]

Just be careful with modifying your hot water system, although we have all commented on how rough it looks you should get a G3 qualified plumber to check the installation over for safe working.

Altering part or parts of an unvented system can remove the safety measures put in place and put your life and the lives of others in danger.

 

[ShaunCorbs]

Take a pic of the part you removed and +1 on the above ^^^^^^