Well head gas counter balanced and operated actuator for oil well pumps

摘要: A pumping device secured to a well head adapted be counter balanced and operated by gas pressure. The cylinder the balance are positioned on prolonged axis employ common polished piston rod operably mounted of cylinders. is pressurized through volume tank receiving pressure regulator from head. powered up down direct gas. flow controlled floating five-way valve admitting directly drive exhausting delivery line. Snifter valves control regulators between line maintain operable differential in system.