NORTECHis imwe yevatungamiri veChinaGlobe Valve Mugadziri & Mutengesi.

Chivharo chekuvhara ( shut-off valve ) zvinoreva izwi rekuti gedhi umo chidimbu chinovhara (wide flap) chinofamba chichitevedza mutsetse wepakati pechigaro chevharuvhu.Zvinoenderana neiyo fomu yekufamba yevhavha disc, shanduko yevhavha yechigaro chechiteshi inoenderana neiyo valve stroke.Sezvo kuvhurika kana kuvhara kwevhavha hunde yerudzi urwu rwevharuvhu ipfupi,
Uyezve, ine yakavimbika kwazvo yekucheka-kubvisa basa, uye nekuti shanduko yevhavha chigaro chechiteshi inoenderana nekurohwa kwevhavha disc, yakanyatsokodzera kugadzirisa kuyerera.Nokudaro, rudzi urwu rwevhavha yevhavha yakanyatsokodzera kushandiswa sevhavha kana kugadzirisa uye throttling.
Kubatsira kuri pachena kwevharuvhu yepasi nderekuti mukuvhura nekuvhara, kupokana pakati peyakafara flap uye yakafara chisimbiso chepamusoro idiki pane iyo yevhavha yegedhi, saka haibatike.Kureba kwekuvhura kunowanzo kungoita 1/4 yedhayamita yevhavha yechigaro chevhavha, saka idiki zvakanyanya pane gedhi vharafu.
Kazhinji pane imwe chete yekuisa chisimbiso pamusoro pemuviri wevhavha uye diski yevhavha yevhavha yekumira, saka nzira yekugadzira yevhavha yekumira inenge yakanaka, uye vheji yekumisa iri nyore kuchengetedza.Nominal pressure kana pressure level yeglobe valve: PN1.0-16.0MPa, ANSI CLASS150-900, JIS
10-20K, zita dhayamita kana caliber: DN10 ~ 500, NPS1/2-36, yekumisa vharafu nzira: flange, butt welding, shinda, nezvimwewo, tembiricha inoshanda: -1969 ℃-700 ℃,
Dhiraivha modhi: bhuku, bevel giya dhiraivha, pneumatic, magetsi, hydraulic, gasi-mvura yekubatanidza, electro-hydraulic linkage,
Broad body zvinhu: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mо2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti,
Zvinhu zvakasiyana-siyana zvinoshandiswa pakugadzirisa-kugadziriswa, izvo zvinogona kuiswa kune akasiyana midhiya senge mvura, chiutsi, mafuta, nitric acid, acetic acid, oxidizing medium, urea, nezvimwe.