Valve handwheel imayikidwa pamakina owonjezera a nyongolotsi ya shaft, yokhazikitsidwa ndi pini yosinthika. Kuti amasule gudumu la m'manja, chotsani pini ya kasupe ndikutulutsa gudumu. Valve ikhoza kugwiritsidwa ntchito kwa nthawi yayitali, pini yotanuka ichita dzimbiri, ndikupangitsa kuti kuchotsedwa kumakhala kovuta kwambiri, komwe kumatha kukhala ndi dzimbiri pang'ono pampata pakupopera koyambirira, dikirani mphindi 5 mpaka 10 kuti mulowemo, ndiyeno molingana ndi njira yomwe ili pamwambapa.
Hangzhou Xiaoshan Chuangye Metal Processing Factory ili ku Zixia Village, Xintang Street, Xiaoshan District, Hnagzhou City. Zimangotenga mphindi 30 kuchokera kufakitale kupita ku Hangzhou Xiaoshan International Airport.
