R.G. Laurence Series 700 On / Off Valves
Series 700 are pure Direct Operated valves; (referring to the internal construction) wherein the full-area valve disc is lifted off the seat against the full, static line pressure by raising the internal lever; i.e without the aid of an internal pilot and without a minimum pressure or flow requirement. The valve will open, remain open, and/or will close fully and remain closed down to 0 PSI differential. Closing speed is essentially instantaneous and independent of fluid viscosity, line pressure, or pressure drop across the valve.
Series 700 are pure Direct Operated valves; (referring to the internal construction) wherein the full-area valve disc is lifted off the seat against the full, static line pressure by raising the internal lever; i.e without the aid of an internal pilot and without a minimum pressure or flow requirement. The valve will open, remain open, and/or will close fully and remain closed down to 0 PSI differential. Closing speed is essentially instantaneous and independent of fluid viscosity, line pressure, or pressure drop across the valve.
Series 700 valves are suitable for handling #6 fuel, oil, sea water, other viscous and unclean liquids as well as fuel gases, steam, water. #2 fuel oil, etc.
