Product Details: The Bendix Air Dryer Purge Valve Kit is designed to protect your system from damage caused by corrosive or toxic substances. This valve opens and releases excess pressure when the pressure in the system exceeds the rated limit, preventing damage to the system. The kit includes all the necessary components for installation and is easy to install. With its durable construction and reliable performance, it is an essential part of any air dryer system. FleetPride is your First Click in Heavy Duty®.