low pressure electric hot water cylinder, any ideas ?

[Gary111]

I have a fairly old electric water cylinder (maybe 80 litre) Im suddenly getting low pressure.

Does anyone please have any idea for the possible cause ?

Im thinking maybe rust is building up inside and os causing a blockage ?

it doesnt have an expansion tank but I think has a pressure valve.
thanks

 

[dilalio]

Make and model.
Photos.

 

[Gary111]

Hi its simex not sure of model but its 80 litres.
On second thoughts I dont think it has a pressure relief valve

 

[Gary111]

 

[Gary111]

actually its s180 model

 

[dilalio]

Limescale maybe.
Where are you located?

 

[Gary111]

denton, mancheter, dont get limescale in kettle

 

[Gary111]

 

[Gary111]

This is the pipework to it, is it likely that any of that could be causing it ?
also theres a cap on the top, I wasnt able to remove, dont know whats under there

 

[dilalio]

Can't find any MI's for it so likely parts unavailable. Can only suggest a G3 plumber to disconnect it and find cause or replace with a modern equivalent.

It has to have some way of safely dealing with expansion of hot water and emergency discharge.

It. Might be as simple as a blocked inlet filter but maybe more involved.