I AM DESPERATELY SEARCHING FOR A SUPPLIER OR MANUFACTURER OF BOILER TANK SAFETY CAPS FOR OUR STEAM CLEANER. I HAVE ATTACHED PICTURES OF THE CAP IN QUESTION. THE MEASUREMENTS ARE 3/4 DIAMETER, EUROPEAN THREAD AND THE STEM IS 1/2 LONG. ANY HELP OR DIRECTION YOU ARE ABLE TO GIVE WOULD BE GREATLY APPRECIATED.Country:USA