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?

Hi Ron..

I don't know anything about this valve so if you don't have the installation instructions you are probably best to call the manufacturer directly and ask them how to resolve this, OK? Ask for the technical department when you get through to them.

I would recommend that you keep everything you removed as they will be important when/if you get the proper cartridge in place... ;)

Good luck!

Mark

Thanks, I'll give them a shout next week!