Recent content by struc

ha, i did almost loose it in all the noise

Thanks for that Tony, I had thought about the dynamic pressure in the past, but had put it to one side for various reasons. I can't actually find any the pressure - flow rate data for the showers we're looking at, beyond them saying min 0.5 bar. The guys who are designing and installing our...

hmm, I’m starting to wonder if you're just winding me up. I'm not really sure what it is about what I’ve said that makes you think I’d be doing the job myself. Granted, if I was asking about some practical aspect of doing the job but querying the pipe upgrade quoted by a tradesman is not...

I realise you're just concerned about someone being irresponsible and unsafe and I’m sure you guys get your fair share of idiots posting questions on here. But there are genuine reasons why people may ask such questions too. Sadly tradesmen are a mixed bag too and you can't just assume they are...

That plan would have saved me alot of time, have I over thought this...

.....and I'm not alone in thinking it!! Perhaps you should leave the gas work to the professionals that are qualified to do it. Haha, Oh okay, you must be right then. By your logic, any question posed about gas on a forum could be some numpty doing DIY gas work.

Re flow rate. Like I say with getting the lead supply pipe replaced, I’m assuming that the flow rate is going to increase a fair bit from the current 16l/min I don't believe any of the guys I’ve spoken to are cowboys, they're all Worcester Bosch approved installers and from their websites all...

The flow rate is currently only around 16 litres per min. But we currently have a lead supply pipe which I was going to get replaced. Am assuming the flow rate will be much better once that's done. I don't know the pressure. I believe I need some sort of device to measure that which I don't have.

Good question. Basically, we're currently in the process of getting a new bathroom. As part of that we will be changing from our current electric shower which is pretty pathetic, and the wife says cannot wash her hair, to a mixer shower. It will have one of those rainfall showers heads and a...

.... would it be bonkers for them to use 35mm diameter pipe where necessary. For example 22m of 35mm diameter and 4m of 22mm diameter looks like it would be well in. If so i guess i don't need to worry if they can't get to all the pipe to change it.

Thanks, Unless anybody disagrees with this, then I guess I'm probably better off getting another guy to do the work then. As you have suggested it's relatively close to 1mbar drop assuming 28mm all the way, and if i was to keep the pipe that runs from downstairs to up stairs at 22mm the...

He says upgrading the first few meters will be enough. I'm just concerned in case this is wrong and I have a boiler installed that it is a nightmare job to adequately supply gas too. I've had a few quotes, the first guy didn't mention the gas supply would need upgrading. The second guy...

Thanks for the replies! Does anyone have any thoughts on my first question. i.e. a 22mm diameter pipe that is 12m long with a flow rate of 4.2m^3/h would get a 1mbar pressure drop. Therefore as I have around 26m of pipe I’m going to need to replace alot more than the quoted 5m of pipe.

Hello, I have a few questions about gas supply pipe sizing calculations I was hoping for help with. Q1. I am looking at replacing an existing combi boiler with a Worcester Bosch 38CDI. I've had a quote saying that the pipe may need upgrading to 28mm and that upgrading the first 5m should be...