thanks for reply , cant read all you said got adverts in the way how do i get rid of them .

looks like this advert is a ongoing problem with no solution , the bit i can read say it may be a sniffer valve sounds right , the ball is missing will get a replacement , so it may sit through the hole behind the chimney would that be correct , much appreciate the advice given, thanks .

thanks for that informtion nick , having problems reading replies do to adverts having to guess some of whats written , im still not 100 percent sure this is the dairymaid , most things match then something dont seem correct , just measured from the back of smokebox to the pipe that goes up into steam dome , its 21/2 inch should be 41/2 , i do have the original boiler plan , im gonna load more pictures see what people think it is , thanks .

appreciate any thoughts on how to proceed with this loco , all ok now with the snifter valve , the issue now is position of the pipe that goes up into the steam dome looks to near to the smokebox , plan says 41/2 inch to the back of the smokebox , its actually 21/2 inch , all other measure of regulator are spot on any ideas which way to proceed much appreciated , " see pictures " thanks .

thanks for reply mick , but no its threaded one side silver solder the other , its realley strange it must have been a complete loco at some stage but stripped to replace the boiler some one started but didnt complete it , all the bits off the boiler came with it , ive searched looking for another 4-4-0 loco that it may have been changed too but no luck , if i dont come up with a answer then ill just make the boiler with the dome in that position , thanks .