Update your semi truck with a rapid removal of excess water, oil, and air from a vehicle's air tanks, with the Bendix 3/8" NPT Cyclone DuraDrain Valve that ensures you're Ready for the Road Ahead. This replacement valve works to dispel excess moisture from an air brake system before it can cause potential damage. Manufactured with a pressure and heat-resistant body to prevent accidental leaks. FleetPride is your First Click in Heavy Duty.