Thaum xaiv cov khoom siv rau cov cab iav npauj npaim valve, muaj ntau yam uas koj yuav tsum xav txog. Qhov kev xaiv ntawm cov khoom siv yuav nyob ntawm qhov kev thov tshwj xeeb, kev ua haujlwm, thiab kev tshaj xov xwm raug tuav. Nov yog qee qhov kev txiav txim siab tseem ceeb:
1. Valve Lub Cev Khoom Siv: Lub cev ntawm npauj npaim valve yuav tsum tau ua los ntawm cov khoom siv uas muab lub zog zoo, kev tiv thaiv corrosion, thiab kev sib raug zoo nrog kev tshaj tawm. Cov khoom siv dav siv rau lub cev muaj xws li cam khwb cia hlau, ductile hlau, carbon steel, stainless hlau, thiab ntau yam alloys. Ntsuam xyuas cov tshuaj muaj pes tsawg leeg thiab qhov kub thiab txias ntawm cov xov xwm kom ntseeg tau tias muaj kev sib raug zoo nrog cov khoom xaiv.
2. Cov khoom siv Disc: Lub disc yog cov khoom siv uas tig los tswj qhov ntws. Nws yuav tsum tau ua los ntawm cov khoom uas muaj corrosion kuj zoo thiab lub zog. Cov kev xaiv muaj xws li cov hlau nplaum, cov hlau tsis muaj steel, aluminium bronze, thiab ntau yam alloys. Ntxiv dua thiab, xav txog cov tshuaj muaj pes tsawg leeg thiab qhov kub thiab txias ntawm cov xov xwm kom ntseeg tau tias muaj kev sib haum xeeb.
3. Cov Khoom Siv Lub Rooj Zaum: Lub rooj zaum tsim muaj lub foob ntawm lub disc thiab lub valve lub cev, tiv thaiv kom tsis txhob tawm. Nws yuav tsum tau ua los ntawm cov khoom uas muab cov khoom zoo sealing, tshuaj tiv thaiv, thiab kav ntev. Cov khoom siv hauv lub rooj zaum muaj xws li elastomers (xws li EPDM, Nitrile, Viton), PTFE (Teflon), thiab hlau-seated xaiv rau high-temperature los yog abrasive daim ntaub ntawv.
4. Cov khoom siv qia: Lub qia txuas tus kov lossis tus actuator rau lub disc, ua kom muaj kev sib hloov. Nws yuav tsum muaj lub zog txaus, corrosion kuj, thiab kev ntseeg tau. Cov khoom siv rau cov stems muaj xws li stainless hlau, carbon steel, thiab corrosion-resistant alloys.
5. Cov khoom siv iav: Hauv cov iav iav npauj npaim valve, lub iav mechanism xa cov lus sib hloov los ntawm tus kov lossis actuator mus rau qia. Cov iav yuav tsum tau ua los ntawm cov ntaub ntawv uas muaj lub zog zoo, hnav tsis kam, thiab kav ntev. Cov kev xaiv muaj xws li carbon steel, stainless hlau, thiab bronze.
6. Kev khiav hauj lwm tej yam kev mob: Xav txog qhov kub, siab, thiab kua dej yam ntxwv (xws li corrosiveness, abrasiveness, thiab viscosity) ntawm daim ntawv thov. Xyuas kom meej tias cov ntaub ntawv uas tau xaiv tuaj yeem tiv taus qhov kev ua haujlwm yam tsis muaj degrading lossis ua tsis tiav ntxov.
7. Cov Qauv thiab Cov Cai: Xyuas seb puas muaj cov khoom siv tshwj xeeb lossis cov qauv siv tau rau koj qhov kev lag luam lossis cheeb tsam. Piv txwv li, ANSI, API, ASTM, lossis ISO cov qauv yuav qhia cov lus pom zoo rau cov ntawv thov sib txawv.
Nws raug nquahu kom sab laj nrog valve manufacturers, engineers, lossis cov kws tshaj lij kev lag luam los txiav txim siab cov khoom tsim nyog tshaj plaws rau koj daim ntawv thov tshwj xeeb. Lawv tuaj yeem muab kev taw qhia raws li lawv cov kev paub dhau los thiab kev paub txog kev ua haujlwm thiab kev tshaj xov xwm koom nrog.
