assuming you're working with a deluxe heater, the valve mounts to a metal tab on the core mount [actual valve missing in that pic] - all 55.2-59 deluxe heaters are the same .... if you don't have a deluxe model, there was no Ranco valve

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics