I just bought a gas valve for a Glow Worm fuelsaver 30 40B from:-
http://www.mjtcontrols.co.uk/Part_Type3.aspx?Manufacture_ID=32&Part_Type=Gas+Valve
everybody and all fitters told me you cant get them anymore, but after several hours on internet, got one, albeit for several hundred quid.
boilerbroke freezing
January 2010