What Is A Trolley Hand Valve? This comprehensive article explores the trolley hand valve, a crucial component in air brake systems of combination vehicles. It covers its purpose, proper usage, integration with the overall brake system, and safety considerations. The article emphasizes that while the trolley hand valve provides independent control of trailer brakes, it should primarily be used for testing and not during normal driving. The importance of proper training, regular maintenance, and adherence to safety guidelines is highlighted throughout, making this an essential read for commercial vehicle operators and those interested in air brake systems.
