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Thank you, I will look through my books to see what I missed. Regards Peter

Yeah I am on gas for a few years now, I made this user name when I had a building company. I know I should change it.

Hi, I am domestic gas engineer, mostly repair and and service. I try to keep away from plumbing installation as it is hard work. You are correct the Exp vessel was undersized. I had to fit an additional 18L (from top of my head). I wont be able to calculate the index circuit as the property...

Hi, I am having issues to size a pump for a large house. Boiler is in the basement, UVHW cylinder in the loft. the property is a 2 story + ground floor. At the moment the boiler is a Vaillant 637 (integrated pump). Flow and return 22mm to cylinder (mind that partially it is plastic - so...

Hi. Thank you for your reply. It may be more than 10mm. It's a good half of the internal thread of the flange. Peter

Sorry , I am new to this. Please see image of the flange.

Please see image of the flange and reducer.

Hi, I have an issue with a supplier and I try to put my mind at ease. The situation is the following. PN16 flange - 4" to 4"-2" malleable reducing bush is leaking. I use Loctite 55 with a smear off La-CO Slictite to make the installation smooth. the number of threads of the Loctite 55 followed...

Hi. I having a slight headache from a bathroom layout. I hope someone can help. I have a bathroom to fit in a top floor flat. Loft is accessible. The soil vent pipe is metal and about 30 cm away from the wall. The customer had an idea to fit the toilet cistern in the loft (ceiling height...

I tought of blockage too. But the toilet wich is on the back of this one is working fine (the back flow has happend from this one). All in total it looks like the water pressure is not enough to open the lid on the abr until the level reaches the rim of the pan. and than it is only enough...

But it was working fine before I fitted the abr.

That is true that I have just a litlle fall from the toilets on the first 1 .5 meter. approx 2.5 cm on 100 cm.