This air brake coupling 'C' female 1/2" BSP emergency/service Line with valve lifter is an essential component for any air brake system. It features a valve lifter that ensures quick and easy coupling and uncoupling of emergency and service lines. The 1/2" BSP thread is compatible with most air brake systems and the durable construction ensures longevity and reliable performance. This coupling is designed for emergency and service lines and features a valve for added safety and control. Invest in this high-quality Air Brake Coupling for a safe and efficient air brake system.