Product Details: The Bendix R-12DC® Series Air Brake Relay Valve is designed to increase driving efficiency and security. It is a reliable and durable valve that is easy to install and maintain. This valve is designed to be used with air brake systems and is capable of controlling the air pressure in the system. It includes a universal mounting bracket that makes it simple to switch it out with different relay valves. It also has the possibility of reservoir or flange mounting. This valve is designed to provide maximum performance and reliability, making it an ideal choice for any air brake system. FleetPride is your First Click in Heavy Duty®.