I-PEX copper fittings yizixhumi zensimbi ezisetshenziswa ukuxhuma amaphepha e-PEX (amaphepha e-polyethylene axhunywe ngokuhlanganyela). Ngokuvamile zifaka ama-elbow, ama-tee, kanye nezixhumi, zifeza uxhumano oluvikelekile phakathi kwephepha le-PEX nezixhumi zensimbi ngezindlela ezifana nokucindezela, ukwandisa, noma uxhumano olunezintambo. Zisetshenziswa kakhulu ekwakheni ukuhlinzekwa kwamanzi, ezinhlelweni zokushisa, nasezinhlelweni zokushisa phansi.

Isici esiyinhloko se-PEX copper fittings sitholakala ekuhlanganiseni izinzuzo ze-PEX pipes kanye ne-copper fittings: I-PEX pipes inikeza ukumelana nokugqwala, ukumelana nokuhudula, kanye nempilo ende yokusebenza (ngaphezu kweminyaka engu-50), kanti i-copper fittings inikeza amandla aphezulu emishini, ukumelana nezinga lokushisa eliphezulu (ngokuvamile izinga lokushisa elisebenzayo elingu -70℃ kuya ku-110℃), kanye nokumelana okuhle nokuhudula, kuqinisekisa ukuxhumana okuthembekile. Le nhlanganisela ikakhulukazi ifanele izinhlelo ezinezimfuneko eziphezulu zokuphepha nokuhlala isikhathi eside, njengezintambo zamanzi ashisayo nezibandayo ezikhamera ngaphakathi kanye nokushisa phansi. Ngokwezigaba nezindinganiso, i-PEX copper pipe fittings kumele ihambisane nohlobo lwe-PEX pipe (isb. PEX-a, PEX-b, noma PEX-c). Izinqubo ezihlukene zokuxhumanisa zithinta ukumelana nokushisa kanye nokumelana nokuphuka kwempahla yeph pipe; ngakho-ke, kubalulekile ukuqinisekisa ukuthi i-pipe fittings kanye ne-PEX pipes zisezingeni elifanayo kanye nezinto lapho ukhetha amafitting. Imikhiqizo kumele ihambisane nezindinganiso ezihlobene, njenge-GB/T 18992 mayelana nezilinganiso zengcindezi nezilinganiso zokubekezelela, kanye ne-CJ/T205-2000 kanye ne-CJJ/T98-2003 mayelana nokumelana nokushisa, izinga lokuxhumanisa (ngokuvamile 70%-89%), kanye nokumelana nokuhudula. Amafitting ngokwawo kumele adlule ku-95℃/1.5MPa hydrostatic test futhi ahlangabezane nezidingo zamandla okudonsa.