see the link in my tag line for TF heaters for pics - that 'control valve' is a Ranco valve, meant to control water flow to a set temperature - found on the deluxe heaters, which have a control panel with a temperature slide control, the standard heater only has a variable fan switch knob

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