MAINS COLD AND HOT WATER PUMPED SHOWER?

[DAVEY C]

I AM LOOKING TO FIT A NEW SHOWER USING THE MAINS PRESSURE FOR THE COLD( 15 MM )AS IT IS ALREADY PIPED INTO THE BATHROOM.
THEN USING A SURREY FLANGE FROM THE HOT WATER CYLINDER TO A PUMP

MY QUESTION IS
(1) I WILL USE 22MM FROM THE CYLINDER TO THE PUMP
THEN AS THE PIPE WILL NEED TO GO UNDER THE FLOOR USE 15 MM FROM THE PUMP TO THE SHOWER ( A LENGTH OF ABOUT 8 FEET )
IS THIS OK ?
(2) IS THERE ANY PROBLEM YOU CAN THINK OF USING THE MAINS COLD SUPPLY AS MOST SYSTEMS i've SEEN USE A COLD WATER SUPPLY FROM THE TANK
(3) WHAT BAR PUMP WOULD BE RECOMMENDED FOR THIS SET UP ?

 

[chrishutt]

Oh please, we don't like it when people use capital letters. It's called SHOUTING (sorry) and I don't expect you'll get any replies until you edit it to normal type.

 

[nstreet]

If you have hw from a cylinder and cold water from mains, then its ideal for a venturi shower. Saves all that messing with pumps and electrics. I fitted one a few weeks ago and was quite surprised at the result.