Pob li qub tau tsim nyob rau xyoo 1950. Nrog rau txoj kev loj hlob sai ntawm kev tshawb fawb thiab thev naus laus zis thiab kev txhim kho txuas ntxiv hauv cov txheej txheem tsim khoom thiab cov qauv tsim khoom, lawv tau dhau los ua hom valve loj hauv tsuas yog 40 xyoo. Nyob rau hauv industrialized Western lub teb chaws, kev siv pob li qub yog nce xyoo los ntawm lub xyoo.
Hauv kuv lub tebchaws, pob li qub tau siv dav hauv roj av refining, ntev - cov kav xa dej, kev lag luam chemical, papermaking, pharmaceuticals, water conservancy, power, municipal engineering, and steel industries, ua lub luag haujlwm tseem ceeb hauv kev lag luam hauv lub tebchaws. Lawv muaj 90-degree rotation action, nrog rau lub voj voos kheej kheej thiab lub voj voog los ntawm lub qhov lossis channel raws nws axis.
Pob li qub feem ntau yog siv rau hauv cov kav dej rau kaw -off, faib, thiab hloov cov dej ntws ntawm kev tshaj tawm. Lawv tsuas xav tau 90-degree kev sib hloov thiab lub zog me me kom ua tiav lub foob nruj. Pob li qub yog qhov zoo tshaj plaws rau kev qhib / tawm thiab kaw-tawm daim ntawv thov, tshwj xeeb tshaj yog V-hom pob li qub. Ntxiv nrog rau kev txiav txim siab txog cov kav dej, kev saib xyuas tshwj xeeb yuav tsum tau them rau ib puag ncig ntawm cov hluav taws xob li qub, vim tias lub tshuab hluav taws xob hauv lub tshuab hluav taws xob yog cov cuab yeej siv tshuab, thiab nws cov kev ua haujlwm raug cuam tshuam los ntawm ib puag ncig. Raws li ib txwm muaj, yuav tsum tau saib xyuas tshwj xeeb thaum siv lub pob hluav taws xob thiab cov npauj npaim li qub hauv cov chaw hauv qab no.