I-PEX copper fittings iyizixhumi zensimbi ezisetshenziswa ukuxhuma ama-PEX pipes (ama-pipes e-polyethylene axhunyiwe). Ngokuvamile zifaka ama-elbows, ama-tees, kanye nezixhumi, zifeza ukuxhumana okuvalekile phakathi kwe-PEX pipe nezixhumi zensimbi ngezindlela ezifana nokucindezela, ukwandisa, noma ukuxhumana okunezintambo. Zisetshenziswa kabanzi ekwakheni ukuhlinzekwa kwamanzi, izinhlelo zokushisa, kanye nokushisa ngaphansi komhlaba.

Iphuzu eliyinhloko le-PEX copper fittings likhona ekuhlanganiseni izinzuzo ze-PEX pipes kanye ne-copper fittings: I-PEX pipes inikeza ukumelana nokugqwala, ukumelana nokudlidliza, kanye nempilo ende yokusebenza (ngaphezu kweminyaka engu-50), kanti i-copper fittings inikeza amandla aphezulu omshini, ukumelana nezinga lokushisa eliphezulu (ububanzi bezinga lokushisa obuvamile obusebenza -70℃ kuya ku-110℃), kanye nokumelana kahle nokukhululeka, kuqinisekisa ukuxhumana okuthembekile. Le nhlanganisela ikakhulukazi ifanele izinhlelo ezidinga ukuphepha okuphezulu nokuhlala isikhathi eside, njengezintambo zamanzi ashisayo nezibandayo ezisemakhaya kanye nokushisa ngaphansi komhlaba. Ngokwezigaba nezindinganiso, i-PEX copper pipe fittings kumele ihambisane nohlobo lwe-PEX pipe (isb. PEX-a, PEX-b, noma PEX-c). Izindlela ezihlukene zokuxhumanisa zithinta ukumelana nokushisa kanye nokumelana nokuphuka kwezinto zeph pipe; ngakho-ke, kubalulekile ukuqinisekisa ukuthi amafitting ne-PEX pipes akhulu ngendlela efanayo kanye nezinto lapho ukhetha amafitting. Imikhiqizo kumele ihambisane nezindinganiso ezihlobene, njenge-GB/T 18992 mayelana nezilinganiso zengcindezi nezivumelwano zendawo, kanye ne-CJ/T205-2000 ne-CJJ/T98-2003 mayelana nokumelana nezinga lokushisa, izinga lokuxhumanisa (ngokuvamile 70%-89%), kanye nokumelana nokudlidliza. Amafitting ngokwawo kumele adlule ku-95℃/1.5MPa hydrostatic test futhi ahlangabezane nezidingo zamandla okudonsa.