Product Details: The Bendix R-12® Air Brake Relay Valve is a reliable and efficient way to speed up the application and release of the brakes. This valve is designed for either reservoir or frame mounting and is available in two body styles. It comes with a universal mounting bracket and a variety of inlet and outlet ports. The valve is constructed with a durable, corrosion-resistant material, ensuring a reliable and long-lasting performance. It is an ideal choice for any vehicle requiring a reliable and efficient braking system. FleetPride is your First Click in Heavy Duty®.