Self-priming monobloc pre-filter, thermostatic water pump. Suction and discharge nozzles with self-tapping; 2 "(Ø 63mm), 1 1/2" (Ø Ø 50mm) pump shaft AISI 316 quality stainless steel. Easy opening and closing lid with 40 ° rotation. Transparent ım Xylex al cover with high chemical resistance to cracking. 4.5 L pre-filter basket much larger than the similar ones. IP55 engine.