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Hlau Seated Valve Pob thiab Rooj Teeb
Hlau rau hlau pob thiab lub rooj zaum muaj xws li ib lub pob thiab ob lub rooj rau hlau zaum pob valve. Lawv twb lapped ua ke thiab sim nrog cawv los yog kerosene kom lav tias xoom xau los yog npuas nruj seal. Ob yam tseem ceeb tshaj plaws ntawm lub pob valve yog lub roundness thiab nto tiav. Lub roundness yuav tsum tau tswj tshwj xeeb tshaj yog nyob rau hauv qhov tseem ceeb sealing cheeb tsam. Peb muaj peev xwm tsim cov pob valve nrog siab heev roundness thiab siab nto tiav tolerances. Adva...
