High-performance Daniel Series 700 Nitrogen-Loaded Control Valves (Models 762, 763, 765, 766 and 767) are engineered to instantaneously respond to pipeline surges and pressure to protect personnel and mitigate equipment damage. The rugged, reliable valves offer linear control and high flow capacity to accurately monitor maximum pipeline pressure or to maintain minimum back pressure. The valves have no external pilot controls and the cylinder, piston and seat ring can be removed as a cartridge assembly to simplify maintenance and minimise downtime.