| Terminology | |
| Control Line or Booster Valves | |
| These valves are designed to boost and accelerate the control signal for trailers with slow brake systems or low timing thresholds. In addition they can substantially reduce release timing. They are common on very long trailers, large multiple axle trailers, and trailers or dollies designed to tow other trailers. The Dolly Control Line Valve is of similar design and function. | |
| Terminology Index |