Makhalidwe a mankhwala
1. Mapangidwe ang'onoang'ono, kapangidwe koyenera, kukhazikika bwino kwa valve, njira yosalala ndi coefficient yaing'ono yokana kutuluka.
2. Malo osindikizira amapangidwa ndi chitsulo chosapanga dzimbiri komanso simenti ya carbide yokhala ndi moyo wautali wautumiki.
3. Flexible graphite packing mbale, kusindikiza kodalirika, ntchito yosavuta komanso yosinthika.
4. Njira zoyendetsera galimoto zimaphatikizapo mafomu amanja, magetsi, pneumatic, gear transmission and structural form; elastic wedge single valve, mbale yolimba ya wedge single valve ndi mtundu wa zipata ziwiri.
5. Amagwiritsidwa ntchito kwambiri muzinthu zamafuta, mapaipi amadzi ndi nthunzi amafuta, mafakitale amafuta ndi mafakitale opangira magetsi monga zida zoyambira ndi zotseka zolumikizira kapena kudula sing'anga mu mapaipi.