strange valve fitting

Anyone please explain why these one way service valves have been fitted like this?

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Reply to
hazadous temperature
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regulations. It is not the neatest way it could have been done.

Colin Bignell

Reply to
Nightjar

The horizontal one is like that cause there wouldn't be enough space to get the alignment right with elbows etc if it was vertical.

Reply to
Dave Liquorice

The job could have been done a lot neater.

haz

Reply to
hazadous temperature

On the other photo (I've just uploaded gives a wider view) you can just see the insulation at the very top of the image with three pipes coming downward, The first pipe on the left is a cold feed and the other two are hot.

The chrome pipe leads to a hose connection (not show) but to me there is enough room to fit the valves at the top of the vertical pipes, seems a strange way for a professional outfit to do all the dogs-leg abortion when they could have fitted the valve at the top albeit two instead of one, but it would be neater, as it is the dogs-leg is leaking at the top right elbow.

This is in a Morrisons supermarket and the sink area is in the main staff sluice room.

haz

Reply to
hazadous temperature

Wider image here;

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Reply to
hazadous temperature

One is apparently in the cold feed, the other is in the hot and I would guess the two connected vertical pipes on the right are at the end of a hot service secondary circulating loop. The number of holes in the tile behind the hot tap would suggest some pretty poor wall conditions behind it which may be why the convoluted route has been introduced. If the wall is sound then it shows a bodging installer may be involved.

Reply to
cynic

Are the two 'hot' pipes part of a circulation system to keep the pipes hot?

Reply to
<me9

The water may indeed recirculate as there are two hot pipes on the right which are joined together just where the leaking elbow is.

If it is a recirculated loop then that would explain the method used to fit the one way valve.

The holes in the tiles are where older taps have been previously fitted, the tiles=A0are positioned over a solid breeze block wall.

haz

Reply to
hazadous temperature

e:

I think they are recirculated, as the hot feed pipes are joined together.

haz

Reply to
hazadous temperature

e:

There is an arrow on the insulation (not shown in the photo) showing direction of water flow (up and down) but why would one way valves need to be fitted in the first place?

haz

Reply to
hazadous temperature

Because they are required by the Water Supply (Water Fittings) Regulations 1999. to prevent backflow.

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Bignell

Reply to
Nightjar

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