The Bendix QR-1C Series 1/4-18" NPT Supply Port Air Brake Quick Release Valve is a reliable and durable solution for controlling air pressure in your vehicle's braking system. This valve is designed to be mounted on the axle and serves two spring brake actuators. It is made of high quality materials for an extended lifespan and delivers within 1 psi of control pressure to the controlled device in the standard configuration. Optional noise reducing foam crossers or silencers are available for added convenience. This valve is the perfect choice for ensuring your vehicle's brakes are working properly and safely. FleetPride is your First Click in Heavy Duty®.