yes, the 'standard' heater had no water flow control, usually folks added a shut-off under the hood to stop all flow in summer [one was available from the dealer] - the only style heater for 55-59 that had flow control was the deluxe model
"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
