Ma valve a gulugufe amagwiritsidwa ntchito m'njira zosiyanasiyana monga malo oyeretsera madzi, kukonza chakudya, mafakitale a mankhwala, ndi zina zotero. Ma valve amenewa amakhudza ntchito m'mafakitale awa pamene akuyembekezera kutumiza. Mwachitsanzo, m'malo oyeretsera madzi, komwe ntchito yaikulu ya ma valve ndikuwongolera kuyenda kwa madzi, nthawi yogwira ntchito chifukwa cha ma valve omwe sapezeka ingayambitse kusakwanira kwa madzi oyera, zomwe zingakhale zovulaza thanzi la anthu.

Nortech ndi m'modzi mwa opanga ma valve otsogola ku China omwe ali ndi satifiketi ya ISO9001 yapamwamba.