We have a low pressure system where it is a lagged hot water cylinder and mains pressure cold.
The shower valve is a thermostatic mixer for use with low or high pressure systems (so say instructions) (low pressure as low as 1bar) Crosswater EV1210EC
I've taken the shower valve off and just opened the valve and it jets out fine.
I've taken the controls off the end of the shower valve and put the shower valve back on and then open the valves again and the flow is still much restricted.
I've taken out the one way valves in the shower valve and tried again, still loss of pressure is experienced.
Have I got the wrong shower valve? Any ideas?