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Ask The Trades › DIY Forum › Plumbing Questions › Required Gas Pipe Diameter

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Required Gas Pipe Diameter (Read 28639 times)

splinter GDPR opt-out	Re: Required Gas Pipe Diameter Reply #34 - Oct 23^rd, 2004, 9:43pm DoWelkSon, We know you are not C.F he would have given reasonable back up to his theories ,Idid read the deleted posts was there any truths in them.Like I said not C.F more like CPW
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big-e Junior Member Offline The (piss)artist formerly known as Mice! Posts: 55 Total Thanks: 0 For This Post: 0 Gender:	Re: Required Gas Pipe Diameter Reply #35 - Oct 23^rd, 2004, 10:05pm Fair enough, I must also apologise for the spelling mistake beed??.
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DoWellSon

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Re: Required Gas Pipe Diameter
Reply #36 - Oct 23^rd, 2004, 10:10pm

Sphincter

..............as Plumber has admirably demonstrated you can get the required flow rate down a piece of 15mm copper tube provided it is less than 3m long. I posed the question to get some reasoning for there being no column for 15mm pipe. The reason it would appear to be simply to cover 'worst case scenarios' and to avoid the need to do a calculation.

PS.............no I'm not a fat wire either Grin

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Re: Required Gas Pipe Diameter
Reply #37 - Oct 23^rd, 2004, 10:51pm

[quote author=Plumber link=1098209297/15#24 date=1098559214]DoWellSon

Here is your answer the reason you cannot use 15mm for this boiler is that 3 meters of 15mm pipe will only pass 2.844 m3/h the boiler requires 2.9, so 15mm will not be adequate to pass the correct volume of gas [/quote]

I final comment before it goes to bed Plumber.

The reason he can't use 15mm is because the manufacturers say so, end of argument.

scruff

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Re: Required Gas Pipe Diameter
Reply #38 - Oct 24^th, 2004, 12:17am

DoWellSon

I stated that you are unlikely to be able to get from a gas meter to a boiler within 1-2 meters that is why the calculations start at 3m, none of the tables I have start at 1m they all start at 3m, so the answer is still No 15mm is not sufficient to supply the boiler as it will only carry 2.844 m 3 of gas the boiler requires 2.9 that is why the instruction state 22mm and 28mm only.

Please can you just except this answer

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