The Bendix QRN Series 3/8-18" NPT Supply Port Air Brake Quick Release Valve is the perfect solution for controlling the front axle brake chambers. This valve is made of high quality durable material for an extended lifespan and comes with optional noise reducing foam crossers or silencers. It is designed to provide reliable and efficient performance in all types of vehicles. The valve is easy to install and maintain, making it an ideal choice for any vehicle. With its superior quality and performance, it is the perfect choice for any vehicle. FleetPride is your First Click in Heavy Duty®.