Change 2 separate taps for mixer tap on bath?

sasparillo

Hi,

Is it feasible and cost effective to change two separate bath taps (hot and cold) for a mixer tap?

missile

Hi,

Yes it is possible, see < here >


Cost effective(?), only if your existing taps need changing

-taff

And as long as the holes ,if it wasn't a pre-drilled bath, have been drilled to the right spaces for the mixer tap.

sasparillo

-taff wrote: »

And as long as the holes ,if it wasn't a pre-drilled bath, have been drilled to the right spaces for the mixer tap.

Thanks. This is what I was wondering ... I was thinking of putting a shower hose and head on a mixer tap, hence the comment about cost effective.

Moss5

If you have a combi-boiler, your hot and cold water will be at similar pressures.
If yo have a hot and cold tank, the cold water is likely to be at mains pressure. The hot water will be at gravity hot-tank pressure.
You must not connect a deck-mixer to unequal pressures.
With both taps open, the cold mains pressure would drive the hot water back to the hot tank.

sasparillo

Moss5 wrote: »

If you have a combi-boiler, your hot and cold water will be at similar pressures.
If yo have a hot and cold tank, the cold water is likely to be at mains pressure. The hot water will be at gravity hot-tank pressure.
You must not connect a deck-mixer to unequal pressures.
With both taps open, the cold mains pressure would drive the hot water back to the hot tank.

Thank you so much for that! It is sooo. Useful!

missile

You may find the cold water on the bath is fed from the same tank as the hot water / central heating system. In which case pressure from both taps would be equal.

This was the case in my last property.

sasparillo

Ah, at least I will have the wherewithal to talk to the plumber! Than you!

Owain_Moneysaver

Moss5 wrote: »

If you have a combi-boiler, your hot and cold water will be at similar pressures.
If yo have a hot and cold tank, the cold water is likely to be at mains pressure. The hot water will be at gravity hot-tank pressure.
You must not connect a deck-mixer to unequal pressures.
With both taps open, the cold mains pressure would drive the hot water back to the hot tank.

... and may, in unfortunate cases, send cold water up the pipe into the header tank and overflow into the loft.

Distance between taps: 7" was the imperial taps, new metric taps are 180mm. Your bath may of course be different again.

crank leg bath mixer appears to be the magic incantation to feed google for ones with adjustable spacing. Adapter legs are also available to convert a wall mounting style bar shower to bath/deck mounting but you will need to know the spacing.

sasparillo

Owain_Moneysaver wrote: »

... and may, in unfortunate cases, send cold water up the pipe into the header tank and overflow into the loft.

Distance between taps: 7" was the imperial taps, new metric taps are 180mm. Your bath may of course be different again.

crank leg bath mixer appears to be the magic incantation to feed google for ones with adjustable spacing. Adapter legs are also available to convert a wall mounting style bar shower to bath/deck mounting but you will need to know the spacing.

Hey, thank you so much for this. It’s going to be a great help. I really appreciate your time and knowledge!

that

Re 5#. There are at least two solutions to unequal pressure. one is a cheap flap check valve.

Then there are these https://www.bes.co.uk/water-pressure-equalising-valve-16711

I bought the second item. The pressure stayed balanced, constant even if someone opened the cold water supply, a lovely piece of engineering, was very impressed. It worked for 3 days then some grit got in and killed the mechanism. Mine was not a device you could strip and clean.

I ended up putting a cheap flap check valve on the hot side, simple and has not failed in 9 years.