The Bendix TP-5 Series Tractor Protection Valve is designed to protect the air brake system on tractors from over-pressurization. This valve mounts to the cab or chassis of the tractor and features a 1/2 PTC tractor control port (primary). It helps to extend the lifespan of the brake system and prevents damage to other components in the air brake system. The TP-5 also helps to reduce maintenance costs by protecting the brake system from over-pressurization. FleetPride is your First Click in Heavy Duty®.