Kayan aikin faifan tagulla sun dace don haɗa bututun PEX ko bututun filastik aluminum na ƙayyadaddun S3.2.Hannun yana da ƙirar bevel na musamman don hana yawan matsi da tarawa yayin shigarwar zamewa.Sauƙaƙan shigarwa, haɗin gwiwa yana da karko kuma ba yayyo.