Astralpool Multiflow returns inlet 88×24 to glue inside D.50 mm PN10 pipe. The eyeball has been marked with a series of “knock-outs” at 14, 20, and 25 mm, enabling the required flow to be selected at the time of installation. Recommended max flow 4 m/sec., complies with UNE 13451-1: Ø 14= 2,2 m3/h, Ø20 = 4,5 m3/h, Ø25 = 7 m3/h. To glue into Ø 50mm 10 bar pipe. Made in white ABS.