THANKS GUYS,
Insatlled the valve on the faucet on the faucet as pictured above (except up). Seems like it might seal OK, may need to be tighter, but did not know if I could get another turn. Of course now I can't test it as I am waiting for the water to drain from a tank flush (just unwinterized, not getting out enough this year!).
Plus I have my pump disconnected installing an expansion tank. Have to test the shower another day. I am however on the net with my newly istalled Jefa repeater. I owe you guys a thread showing all the mods I have done recently, most learned from this forum!!!
Thanks!