Hi, I've purchased 2 No Glo -warm ( Ultraheat?) white radiator valves which have 3/4" BSP threads on both the outlet and inlet. They are supposed to be for 15mm pipe but a 15mm olive fits inside the bore of the inlet and a 22mm olive is too large! Simalarly a 15mm pipe is a 'shoogly' and a 22mm pipe doesn't fit. fit I bought these on ebay and the came minus the compression nut for the inlet. Any suggestions would be appreciated. Thanks