Yasungulwa ngo-1900, iZurn ingumkhiqizi ohamba phambili emhlabeni wamavalvu, imikhiqizo yamapayipi neminye imikhiqizo yezimboni. I-Zurn izinikele ekuxazululeni izixazululo zamanzi noketshezi kosonkontileka, abanikazi bezakhiwo kanye nabasebenzisi bokugcina. Njengamanje iZurn inezikhungo eziningi zokukhiqiza kanye nezikhungo zokusabalalisa emhlabeni wonke, ezingahlinzeka ngezinsizakalo ezisheshayo nezisebenzayo kumakhasimende aseNyakatho Melika.

I-Oatey yasungulwa ngo-1916. Cishe iminyaka eyi-100+, i-Oatey ibihlinzeka ngamavalvu athembekile nasezingeni eliphezulu, amapayipi nokufakwa kwezindawo zokuhlala, ezohwebo nezimboni. U-Oatey uzibophezele ekuthuthukiseni nasekuthuthukiseni izinga lokuphila kwabantu ngemikhiqizo namasevisi ochwepheshe. I-Oatey inohlelo olubanzi lokusabalalisa ukuze inikeze izisombululo zobungcweti kosonkontileka, abakhi nonjiniyela ezimbonini ezihlukahlukene.

IViega yasungulwa ngo-1899 futhi ikomkhulu layo liseJalimane. Njengamanje, imikhiqizo ye-Viega ikhiqizwa ezindaweni eziyisi-6 zamazwe ngamazwe futhi isatshalaliswa emhlabeni jikelele. I-Viega inethimba lezobuchwepheshe elichwepheshile, eligxile ezinsizeni ukuze linikeze izixazululo ezenzelwe onjiniyela, abaklami nabasabalalisi bezinga lokuqala. Kusukela kulwazi lomkhiqizo kuya ekusekelweni kokuthengiswa kwangemva kokuthengisa, ithimba le-Viega lizoyithatha ngokungathi sína.

I-Apollo Valves yasungulwa ngo-1975 futhi iyingxenye ye-Aalberts Group. I-Aalberts izibophezele ekunikezeni amakhasimende amasistimu amapayipi ahlanganisiwe, imikhiqizo yezimboni kanye nezinsiza ukusiza amakhasimende aqedele umsebenzi wawo kalula nangempumelelo.
Imikhiqizo ye-Apollo Valves ihlanganisa ama-valve ebhola lethusi, ama-valve ebhola ensimbi engagqwali, ama-valve ebhola e-carbon steel nokunye.

Iminyaka eminingi, i-Neles ihlinzeke ngamavalvu angochwepheshe kanye nezixazululo ezizenzakalelayo zezimboni zikawoyela negesi, iphepha ne-pulp, ibhayoloji, izimboni zezokwelapha nezamakhemisi nezimboni zokudla. I-Neles inochwepheshe bezobuchwepheshe abangu-2950 abanolwazi oluqinile lwemikhiqizo nolwazi lwemboni ukusiza amakhasimende aqedele umsebenzi wawo ngokwethembeka nangempumelelo.