pipe manifold to route mains water

[lemon_1]

I'm redoing my water pipework in an old house and am creating a DIY pipe manifold

I was thinking of adding a drain valve, check valve and isolator to each outlet; is that a good idea? Specifically was thinking maybe the check valve might impede pressure?

In total there will be 5 points on the manifold,

1. for the mains (in)
2. garden tap
3. boiler
4. kitchen
5. bathroom

A pic of the partly done maifold is attached (theres only 3 connections at the moment for 1,2,3 above)

So is there an issue with this design ? is a check valve and a drain point at each outlet a good idea?

Thanks in advance (pardon my amateur soldering!)

 

[Madrab]

Depends how long the runs are to each of the outlets and how good your water pressure and flow is into the 22mm, whether a dynamic drop might be seen at one or more of the feeds if multiple outlets are used with the branches being that close together.

 

[John D v2.0]

Good work on the soldering, you really feel you made something solid when you solder! A manifold is a nice idea but you only need the check valve on the outside tap and then it needs to be a double check. Some kind of isolator is essential, and putting it on the manifold makes sense.
I've done a manifold for hot so that the shower doesn't get affected by the tap so much, but cold it wouldn't be ecological on pipe so some things are combined. Depends on your system layout though.
With hot though you'll have to run the water through the pipe twice if you use two hot feeds even if they're in the same room.

 

[lemon_1]

this is my new design, it's basically just iso valves and one drain off cock.

I think this will achieve what I wanted to achieve, i.e. maintenance and service of any part of the system without disrupting the whole supply.

 

[vinn]

You can already "maintenance and service any part of the system" on millions of traditional systems.
You have isolation valves at every fixture as the Regs have required for some time.

As above, run a 22mm rising main and branch off that - wheres the difficulty.
What you propose, like many custom manifolds, will increase the possibility of problems and certainly cost quite a bit more in copper.

In residential work, manifolds can definitely serve a purpose when coming up out of the slab but dont otherwise enhance the average one family installation.

 

[lemon_1]

heres a picture of the finished article in operation...

 

[John D v2.0]

That's art not plumbing! I'm assuming you have that on display in your hallway.
Compare with mine which admittedly is temporary and I'm almost too embarrassed to post

 

[rules&rulers]

Maybe sell it as a kit,make some £££'s
http://www.bbc.co.uk/programmes/articles/3D0rSm9tMLy9m9wJth7Fl7S/apply-to-enter-the-den

 

[John D v2.0]

Ha, I remember when the thermskirt guy went on, I immediately thought "brilliant idea" then they all just rubbished it and told him to go home. It is over priced but it is a great idea.

 

[lemon_1]

That's art not plumbing! I'm assuming you have that on display in your hallway.
Compare with mine which admittedly is temporary and I'm almost too embarrassed to post

@John D v2.0 Thanks for the compliments... I only wish I'd taken a before pic, it was like spaghetti junction before!