Designed for efficient drainage of ballast tanks and bilge wells in emergency situations. Safe to use in environments where electric sparks could pose a risk of ignition or explosion. Rated lift capacity of 30-50 meters, with a flow rate of 20-30 m³/h to handle various pumping needs. Compatible with air pressure of 0.3-0.7 Mpa and suitable for water depths of up to 4 meters. Features a 40mm outlet water hose and a 1"/25mm inlet air hose for easy connection and operation.