Hoping someone can give me some guidance, or bit of a sense check, re teeing off the mains water supply pipe running up the front garden, to provide an outside tap.
The back story: Our mains supply pipe has been cut through inadvertently (not by me!!). The original pipe was black plastic (house was built in the late 1970s); I dug down to expose the pipe and there's now a new section of blue MDPE joined using decent Plasson pushfit adapter to the original supply pipe but I haven't filled in the trench yet.
I'm thinking of teeing off from the new section of MDPE pipe to provide an outside tap, so I've got myself some Plasson bits, being a 90deg tee, a 90deg elbow, a stop tap, a wallplate elbow and a brass tap with integral NRV.
My plan is to tee off at 90deg horizontally from the supply pipe using the tee, to run a section of pipe to where I want the tap, then fit a 90deg elbow to run the pipe directly upwards to the surface, put the stoptap on just above the surface, then run up to the tap (with the stoptap, tap, and pipe between in an insulated box). I have plenty of the blue MDPE pipe, a cutter etc.
(The idea of the stoptap being I can isolate the tap above ground to change the tap, or in a winter cold snap, etc.)
Does that sound OK?
The worry I had was if I've got a section of pipe tee'd off from the main supply before it enters the house, and I don't use the outside tap very often, will water just 'sit' in the tee'd off length of pipe, going stagnant or whatever, and then mix with the water supply into the house... or with it all being under mains pressure is that not even an issue?? Sorry if that sounds ridiculous or the answer is obvious!!!
The back story: Our mains supply pipe has been cut through inadvertently (not by me!!). The original pipe was black plastic (house was built in the late 1970s); I dug down to expose the pipe and there's now a new section of blue MDPE joined using decent Plasson pushfit adapter to the original supply pipe but I haven't filled in the trench yet.
I'm thinking of teeing off from the new section of MDPE pipe to provide an outside tap, so I've got myself some Plasson bits, being a 90deg tee, a 90deg elbow, a stop tap, a wallplate elbow and a brass tap with integral NRV.
My plan is to tee off at 90deg horizontally from the supply pipe using the tee, to run a section of pipe to where I want the tap, then fit a 90deg elbow to run the pipe directly upwards to the surface, put the stoptap on just above the surface, then run up to the tap (with the stoptap, tap, and pipe between in an insulated box). I have plenty of the blue MDPE pipe, a cutter etc.
(The idea of the stoptap being I can isolate the tap above ground to change the tap, or in a winter cold snap, etc.)
Does that sound OK?
The worry I had was if I've got a section of pipe tee'd off from the main supply before it enters the house, and I don't use the outside tap very often, will water just 'sit' in the tee'd off length of pipe, going stagnant or whatever, and then mix with the water supply into the house... or with it all being under mains pressure is that not even an issue?? Sorry if that sounds ridiculous or the answer is obvious!!!
