Stainles Steel Cylinder With Surrey Flange?

[caracal]

Guys,

I'm a newbie with urgent need of help...

We're upgrading the hot water system in the house. I wanted my plumber to install an indirect vented Stainless steel cylinder (Albion) with a shower pump (Grundfos 4.0bar). He said a surrey flange is needed (perfectly understandable), but that the stainless steel cylinder isn't compatible with a surrey flange (1" female BSP needed, but the cylinder has 22mm compression fitting).

Anyone know if this can be done somehow? Can a stainless steel cylinder (any make) be fitted with a surrey flange?

Any help greatly appreciated.

Guy.

 

[polesapart]

Take the pump hot feed off the cylinder return tapping. "5th tapping" on an indirect.

 

[cross thread]

you can order a gledhill cylinder with extra tapping or cut one and use a essex flange

 

[caracal]

Take the pump hot feed off the cylinder return tapping. "5th tapping" on an indirect.

Thanks for your help.
The cylinder does have this (although Albion say it should be an inlet, not outlet...). I suggested this solution to my plumber - he wasn't very keen...

I just fail to understand why ALL stainless steel cylinder come with 22mm compression fitting on top and not 1" BSP female.

So, is is common practice to use the return tapping, or install an Essex flange when there isn't one?

 

[martin43]

Caracal wrote

I just fail to understand why ALL stainless steel cylinder come with 22mm compression fitting on top and not 1" BSP female.

They don't, my Telford came with 3/4" BSPP female connections, into which a 22mm C*MI was screwed to give a compression connection. I suspect Albion are the same. 3/4" surrey flanges can be purchased. Google (other search engines are available) for suppliers, around the £35 mark.

What I don't understand is the need for a 4 bar pump for supplies that are already at 3 bar. From my own experience I can say that when I went from a combi to unvented the force of the shower was such that it was uncomfortable when the shower valve was fully open. I would suggest that if your mains supply characteristics are adequate for an unvented cylinder then a pump is superfluos. If you need a pump then an unvented cylinder is a bit of a waste. Unless of course you have some specialist showering equipment, although I can't think what that might be.

Personally I would just use the secondary return, cutting a hole for an essex flange isn't good for the health of the warranty.

Regards
Martin

 

[Madrab]

What I don't understand is the need for a 4 bar pump for supplies that are already at 3 bar.

The OP is talking about an indirect vented system with the 4 bar pump, not un-vented

Guys,
I wanted my plumber to install an indirect vented Stainless steel cylinder (Albion) with a shower pump (Grundfos 4.0bar).

 

[martin43]

Ooops, didnt read that very well, apologies.

Regards
Martin

 

[caracal]

Guys,

Help much appreciated.

I think I'll go with connecting the pump to the secondary return inlet, with a pipe that goes to the middle of the cylinder. Can't see this much different from a standard Essex flange ( although slightly lower, positioned at 300mm below the top).

Regards,
Guy.