Fitting a Surrey/York flange to a Hot Water Tank with a 3/4" outlet

[MrSCh]

I need to fit a Surrey/York flange to a hot water tank for better air removal prior to installing a Grundfos shower pump. My issue is that the tank itself has a fixed male 3/4" outlet, in to which is currently a 22mm compression fixing to the DHW supply. The flanges I've seen from Grundfos, Salamander and others come with a 1" male/female fixing. Is there a solution to reduce this to a 3/4" female for the type of outlet I have (pictured)?

Any help appreciated. I've seen a number of posted from people with these type of tanks but not yet seen an answer that helps me...

 

[Hot&Cold]

An Essex flange can be cut into the cylinder,not for the faint-hearted but diy possible.

sometimes due to age & condition of the existing cylinder its worth considering a new cylinder with a shower draw off tapping factory fitted.

happy plumbing

 

[jeff the gasman]

1inch by 3/4 bush and female flange.

 

[Daveydub]

Screwfix



Warwick Male Flange ¾" (88212)

 

[MrSCh]

Screwfix



Warwick Male Flange ¾" (88212)

The outlet on the tank is male. How would you go about creating a sealed connection between these two? Thanks

 

[jeff the gasman]

3/4 socket. Brass.

 

[jeff the gasman]

3/4 socket. Brass.

 

[Daveydub]

The outlet on the tank is male.

Sorry, didn't spot that. Photo not great & I thought I was looking at a male iron - 22mm screwed in. I suspect that your outlet is not 3/4 but is in fact 22mm compression.
If this is the case then either cut flange in to cylinder or:

 

[MrSCh]

Sorry, didn't spot that. Photo not great & I thought I was looking at a male iron - 22mm screwed in. I suspect that your outlet is not 3/4 but is in fact 22mm compression.
If this is the case then either cut flange in to cylinder or:
View attachment 152159

Thanks DaveyDub. Your diagram is the option I'm going for..