Product Details: The Bendix DC-4 Series 3/8"-18 NPT Female Double Check Valve is designed to provide reliable protection against cross-contamination in a variety of applications. The double-check valve design helps to reduce installation time and minimize downtime. The valve is constructed from durable materials, being designed to provide reliable performance in a variety of applications. This check valve is an ideal choice for applications where reliable protection against cross-contamination is required. FleetPride is your First Click in Heavy Duty®.