NORTECHis imodzi mwa mayiko otsogola ku ChinaValavu ya Globe Wopanga & Wogulitsa.

Valavu yotseka imatanthauza chipata chomwe chidutswa chotseka (chotambalala chachikulu) chimayendera pakati pa mpando wa valavu. Malinga ndi mawonekedwe osuntha a diski ya valavu iyi, kusintha kwa doko la mpando wa valavu kumafanana ndi kusuntha kwa valavu. Popeza kusuntha kapena kutseka kwa tsinde la valavu la mtundu uwu wa valavu ndi kochepa,
Komanso, ili ndi ntchito yodalirika kwambiri yodulira, ndipo chifukwa kusintha kwa doko la mpando wa valavu kumagwirizana ndi kukwapula kwa diski ya valavu, ndikoyenera kwambiri kusintha kayendedwe ka madzi. Chifukwa chake, valavu yamtunduwu yozimitsa ndi yoyenera kugwiritsidwa ntchito ngati chozimitsa kapena chosinthira ndi chopumira.
Ubwino woonekeratu wa valavu yozungulira ndi wakuti pakutsegula ndi kutseka, kukangana pakati pa bulangeti lalikulu ndi malo otsekeramo kumakhala kochepa kuposa kwa valavu ya chipata, kotero sichingawonongeke. Kutalika kwa kutsegula nthawi zambiri kumakhala 1/4 yokha ya kukula kwa malo otsekeramo valavu, kotero kumakhala kochepa kwambiri kuposa valavu ya chipata.
Kawirikawiri pamakhala malo amodzi okha otsekera pa thupi la valavu ndi diski ya valavu yoyimitsa, kotero njira yopangira valavu yoyimitsa ndi yabwino, ndipo valavu yoyimitsa ndi yosavuta kusamalira. Kupanikizika pang'ono kapena mulingo wopanikizika wa valavu yozungulira: PN1.0-16.0MPa, ANSI CLASS150-900, JIS
10-20K, mainchesi kapena caliber yodziwika bwino: DN10~500, NPS1/2-36, njira yolumikizira ma valve oimitsa: flange, welding ya matako, ulusi, ndi zina zotero, kutentha koyenera: -1969℃-700℃,
Njira yoyendetsera galimoto: yamanja, yoyendetsa giya la bevel, yoyendetsa pneumatic, yamagetsi, yamadzimadzi, yolumikizira gasi ndi madzi, yolumikizira yamagetsi ndi yamadzimadzi,
Zipangizo zokulirapo: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mо2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti,
Zipangizo zosiyanasiyana zimagwiritsidwa ntchito pokonza zinthu zodula, zomwe zingagwiritsidwe ntchito pazinthu zosiyanasiyana monga madzi, nthunzi, mafuta, nitric acid, acetic acid, oxidizing medium, urea, ndi zina zotero.