The Model DA6 is a high performance, pressure loaded, back pressure regulator with top-guided piston-cylinder that provides high flow capacity and high pressure drop capability. Internal trim design allows the same basic unit to cover a broad range of pressure settings. Performance approaches that of competitive pilot-operated designs in the basic design. Applied primarily in clean gaseous service, but also can be applied as a liquid or steam valve. Truly a “DO-ALL” pressure regulator. Requires auxiliary pressure loading fluid.