called a Ranco valve, American Classic has them [$89], but for my money, a remote cable controlled valve that mounts inline on a heater hose under the hood is less headache long term and cheaper, found at your FLAPS

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 & Rust-a-holics Unanimous parking lot