S1850 shower

[warrens64]

Hi all i have been to the previous posts to make sure my problem has not been covered i cant see that it has been, ok here is the setup.
I have just installed the ts1850 shower the tank is about 1.8 meter above the shower head, before i connected to the shower i run both hot and cold over the bath and got a fair amount of pressure from both but when i connected to the shower body and turned it on the pressure is rather bad, i have not installed any of the restricters and have only put in the filters,
inside the eblows that conect the the pipes to the shower body are two plastic fittings i assume these are non return valves so

1 can they be removed if so how do you get the sods out

2 what other reason might there be for the pressure droping as it gose through the body

3 i have tried to run without shower head but it is stiil low pressure coming from the hose

Can anybody please give me some help

Thanks

 

[warrens64]

Ok sorted it, having read other posts from other thermostatic showers i now know i need a pump as i have not got enough head there is only 2 meters from under side of cws tank to shower body, and 1.6 meters to shower head.

Ok time to find more money i have not got

 

[warrens64]

Ok as per my other post the shower is a little out of my price range, i have about 1.5 meters of 15mm pipe coming from the 28mm cwds and 2 meters of 15mm from the hot water supply would it help if i replaced the 15 mm with 22mm tube

Thanks for any help you might offer