The DFT® Y-Calibur® Silent Check Valve is an in line repairable, spring-assisted, center guided, non-slam check valve that provides reliable, low-maintenance service for a wide range of fluids and pressure/temperature combinations. The valve consists of a body, bonnet, gasket, seat, spring, disc with stem and guide bushing. Y-Calibur® check valves are available in a wide range of sizes and pressure ratings and in a variety of materials to meet most check valve requirements.