Advice on fittings for Grundfos 22mm Surrey Flange

Hi,

I am in the process of installing a Aqualisa pumped shower and at the last minute found out i should consider avoiding air trap at the top of my vented cylinder.

To do so I have purchased a 22mm Surrey Flange which requires a 22mm MI&C compression coupler for the new air-free outlet.

Just one question..

The vertical vented feed from the flange has a female connection which is larger than 22mm accross, approx external dimension is 40mm. Could someone advise what coupler i need to connect the flange back to a 22mm

Many Thanks

Steve

 

Thanks for the quick response (I have the cylinder disconnected) just a question on the size, the standard supply from the top of the flange measure 1.25" internal, the shower feed measures 1" internal.

So for the shower feed the size below would make sense, is there a 1.25" equivalent for the standard feed?

 

Thanks for the responses guys.

Just a update on this, i needed to fit the cylinder back in by the end of the day and fitted the surrey flange.

I cant test the shower yet so not sure how successful, meanwhile I have emailed Aqualisa to ask the whay and the why on this - trawling around the net there seems to be mixed response on the fitting of a Surrey or a Warrix.

Given i have already installed it I thought i would get Aqualisa's spin.

Either way though, i thought a flange was a good idea for two main reasons:

1) Prevents interuption of flow if other hot taps are used, thus safety measure to prevent sclading.

2) Reduces the amount of air flowing to the shower feed, improving the flow and prolonging the life of the pump.

I can see why a warix may offer a better flow over and above a surrey, but not confident enough to be cutting holes in the side of the tank.

When i get the official line back from Aqualisa i will post.

BTW The shower i am using is Axis Digital Pumped.