Manual mixer showers

[garyslater]

I need to replace a 25 year old manual mixer shower like for like as finances do not yet allow a complete re-fit. The current shower gives adequate flow rate and I would be happy for any replacement to replicate this. My question is regarding pressure. I have a gravity fed system (boiler replaced recently and upgraded to fully pumped system if that makes a difference). The base of the cold water storage tank is approximately 70cm from the shower head in the highest useable position. I think this means that I have less than 1 bar of water pressure (0.07???). All the manual mixers that I have seen need 1 bar of pressure - does this relate to mains water pressure as I have recently been told in a plumbers merchant or the pressure from the storage tank - as I have previously thought? The hot water cylinder is downstairs - does this have any effect on water pressure through the shower?
As I say the pressure is currently adequate and I don't want to start installing pumps etc until I can afford a complete re-fit.

 

[ChrisR]

If you use a cheapie shower mixer off the bath taps, type, and a large bore hose with head designed for low pressure, you'll be no worse off than you are now.
summat like:
http://www.screwfix.com/app/sfd/cat/pro.jsp;jsessionid=14WUVGOVB5LESCSTHZOCFFA?id=73164&ts=87381

 

[alexhayes]

ChrisR, do you have an email address where i could as you a couple of quick q`s? Please? i`m sure you could shed some light on my mixer shower problems going by what i have found using the search function but i cant PM you like a typical forum.

or alternatively if you dont want to give it out, drop me an email on
[email protected]
(with removing the nospam bit)

I understand if you dotn want to, and sorry for thread hijack

 

[garyslater]

Thanks for your reply - unfortunately I can't do that as there is not a bath in the room - it is just a shower cubicle. Any other thoughts?