How can this provide any benefit if the initial feed is 15mm?
2007-05-18 09:33:52 · 7 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
UK taps are a standard 3/4" male thread..... They were supplied with a 3/4" diameter or later still - 22mm copper tube. This was when the hot water was supplied at low pressure from the standard tank in the loft and cylinder in the airing cupboard.
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Nowadays, with combi boilers and unvented cylinders, the use of 15mm is more common. There is no point of running 22mm when the water leaves the appliance in 15mm. All that happens is that there is a lot extra water going cold in the pipe.....wasteful............
2007-05-18 09:48:19 · answer #1 · answered by Anonymous · 1⤊ 2⤋
Because not everyone has a combi boiler. Many domestic plumbing installations still use a cold water storage tank feeding the hot water storage tank and the cold bath tap, relying on gravity. 22mm pipe is required throughout, from tank in loft, to the bath taps, to allow sufficient flow.
2007-05-18 10:49:57 · answer #2 · answered by Dick s 5 · 0⤊ 0⤋
22mm pipe gives a higher flow rate (Not pressure) so that a bath will not take a week to fill from a storage tank, low pressure system. However on a pressurised system or from a Combi boiler, it would be ok to pipe in 15mm as there IS more pressure and therefore a higher flow rate.
2007-05-18 09:46:53 · answer #3 · answered by jayktee96 7 · 1⤊ 0⤋
the initial feed will create more pressure in the water feed, the majority of bath tap fittings come as standard 22mm feeds
2007-05-18 09:38:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋
22mm Tap
2016-12-16 13:48:40 · answer #5 · answered by runkle 4 · 0⤊ 0⤋
john o is 100% right!!!!
cant disagree with him one bit, so if youre thinking about changing your bath taps, just get 3/4" flexi tap connectors and 3/4"x22mm reducers and install them with the reducers just mentioned.
2007-05-18 10:42:40 · answer #6 · answered by JIM M 2 · 0⤊ 0⤋
no
2007-05-18 09:44:20 · answer #7 · answered by Sparky 2 · 0⤊ 0⤋