Ideal for relieving pressure and regulating back pressure, Daniel 700 Series High Performance Nitrogen Regulating Valves (Models 762, 763, 765, 766 and 767) are designed to provide immediate response to line pressure surges, protecting personnel from injury and equipment damage ... Rugged reliable valves provide linear control and large flow capacity to accurately control maximum line pressure or maintain minimum back pressure. The valves are designed with no external pilot valves, and the cylinder, stem, and seat ring can be removed as an assembly, simplifying maintenance and minimizing downtime.