The JIRS 66 pneumatic automatic submersible pump features a one-piece 304 stainless steel construction and is specifically designed for extracting landfill leachate, methane condensate, and hydrocarbon solvents; its bottom-intake configuration makes it suitable for deep-well installation. Powered by compressed air, the pump enables fully automatic liquid level control and pulsed cyclic pumping, delivering a maximum flow rate of 20 L/min and a maximum pumping depth of 76 meters. It operates reliably without the need for an electrical power supply and withstands corrosive fluids (pH 4–9), suspended solids, and temperatures up to 82°C. Easy to install and maintain, it serves as a highly reliable pumping solution for environmental remediation and landfill operations.