All skimmer models are made of ABS plastic and equipped with “discharge regulator” and locking mechanism basket against back pressure. Skimming by “buoy float” or “floating weir”. Suction port: 1 1/2” female threaded (2” also possible upon request), Ø 63 mm external slip. Discharge port: Ø 50 mm female slip. Overflow drainage: Ø 40 mm female slip. Complete with flange, gaskets, stainless steel screws and front cover. Flange connections can be with brass cavities or plastic nests.