Electric submersible pump. High Head Maximum submergence: 20 m (65 ft). Protection class IP 68. Max temperature of pumped medium at max power input and continuous duty 40 ºC (104 ºF). Max medium density 1100 kg/m3 (0.0397 lbs/inch3 ). pH of the pumped medium 5-8. Strainer hole: 7.5 x 22 mm (5/16" x 7/8"). Max number of starts 30/hr.