Water Pressure

[Ray]

I'm going to replace my shower mixer valve with an anti scald one. Most seem to say they need at least 1 bar.

Is it safe to assume that I have that or near enough that if there is already a working shower? Pressure at the taps seems strong, there is one of those flow regulator things and I believe the water system was replaced and uprated an owner or two ago.. SS tank etc.

 

[JanetAnne]

Domestic water pumps on boats pressure the system to something  in the region  of 25 psi (that's roughly, some are more). 25 psi is about 1.7 bar .

Of course this drops when the taps are opened but you should be fine.

[Ray]

Many thanks, I think the anti scald units are very good... the hot water temperature is a bit scary!

[OldBerkshireBoy]

You could fit a thermostatic bar shower which blends the hot & cold in a valve or take a look at a TMV (Thermostatic mixing valve) which does the same thing and is adjustable as fitted in care homes, apartments and I believe new build houses and keep the shower as is.

[dnks34]

I would prefer the TMV option so it covers every outlet on the boat.  It might even be easier than having to change the shower taps as it will probably all be hidden in the bilges or behind cupboards.

 

 

[JanetAnne]

Most calorifiers come with an adjustable tmv as standard these days, they certainly help your hot water last longer. May well be worth considering and they are flow dependant rather than pressure regulated.

[Ray]

There's always more than initially meets the eye with boats isn't there! I'm going with the thermostatic bar shower this time, it's relatively cheap and a simple DIY job that solves the current problem.

Of course, now I know that there's an alternative it will probably go on my 'oneday' list :)

[OldBerkshireBoy]

57 minutes ago, JanetAnne said:

Most calorifiers come with an adjustable tmv as standard these days, they certainly help your hot water last longer. May well be worth considering and they are flow dependant rather than pressure regulated.

Forgot that!