Trevi Boost Exposed

[Redhotferrari]

Hi Guys,

Planning to fit Trevi boost exposed valve, instructions state 'must use 22mm from hot supply'

Does anyone know if this is a 'MUST' or are they covering there backs and 15mm will work fine?

Reason is the pipework will be exposed and feed into bottom of shower, and 22mm will look b***** awful, was hoping to run 15mm chrome plated.

Look forward to hearing from you.

 

[corgiman]

if the makers say its a must then its a must

unless you dont care about any guarantee

 

[leakydave]

22mm is a must for the hot on a Trevi boost. RTFB!.

Why not fit concealed valve? Can you feed from behind? Or try a different shower that can have two 15mm feeds...

 

[Redhotferrari]

Hi Leakydave!

Thanks for the reply, this is in a OLD house with very proper wall, the only posible of way of bring in from the rear and concealed would be to chase out a very big bit of the wall, which obviously is a lot of work, retiling etc, not sure I want to go down that route.......

Due to very high mains pressure and hot water being low as fed from tank, I think the Venturi is the only way to get a shower in the house..

Do oyu know a venturi that has 15mm feeds on hot then?

 

[Breesey]

Do oyu know a venturi that has 15mm feeds on hot then?

Are you aware how this type of ahower works? If you don't maximise the available hot supply it won't work (very well). A 22mm supply here is not an option it's a must.

 

[ChrisR]

Normally the 22mm requirement seems a bit ott, when both H and C are going to have to share a 10mm hose, but I think in this case, on the hot side, it could make a difference.
Being me, I'd try it with 15mm but keep it very short.

 

[Breesey]

...but I think in this case, on the hot side, it could make a difference.

Indeed, the more volume you have the better here.

 

[Redhotferrari]

Breesey, Yep, know exactly how the venturi principle works.
Aside from understanding this principle, I have a Venturi shower in my house, not sure of the make (its a round horrible looking thing) but this shower is fed by 15mm on the hot and cold, and apart from a all singing all dancing pumped mixer shower its by far and away the best shower I have ever had, temperature control is very good and a pretty powerful shower to boot........

Hence my question 'is there any that have 15mm feeds' I am pretty sure the shower I have is not produced anymore

 

[Breesey]

Run hot and cold in 15, it'll be fine as you well know already. As someone else mentioned it is the manufacturer's gaurantee that suffers here!!