It's a pipe that comes out of the top of the bolier with a plastic cylinder attached and a screw top with a sprung-loaded cylinder that appears to release steam through a small tube (this tube has a red plastic screwcap on top).
Just for the record, this is an ancient Gloworm 50 MKII prob...
Hi, I'm trying to find the part no. and availability of the above part. Tried various searches on the web but no joy.
Alternately, does anyone know where I can download a manual / illustrated parts breakdown for the old Gloworm 50 boiler?
Thanks,
SatV