The address for the Parts Department is:
Pulse
Home Products Ltd
Middleton Road
Royton
Oldham
Lancs
OL2 5LN
Cathy Hope, August 2010
If you are having steam problems then the cartridge needs changing.
I phoned them (0161 652 1211) and they do sell the cartridge for £5.99 including delivery but are out of stock for a couple of weeks. You have to get their address from them and send them a cheque or postal orders. Good luck.