Product introduction: The air brake master valve (single chamber) is an important control device in vehicle service braking, which has the function of realizing sensitive follow-up control in the braking process and release process of the braking system. technical parameter Working pressure: 784kPa Working temperature: - 30~+80 ℃ Air port: 3-M22 * 1.5 Adaptation: loader and all mechanical equipment using pneumatic braking system (common parts).