Thaum xaiv lub valve zoo rau kev lag luam, kev ua liaj ua teb, lossis kev lag luam piping, nkag siab txog qhov sib txawv ntawmlub pob valve npauj npaimthiabob chav flange npauj npaim li qubyog qhov tseem ceeb. Ob lub li qub siv dav hauv kev kho dej, kev ua tshuaj lom neeg, HVAC, thiab roj thiab roj av vim lawv tsim qauv me me, siv nyiaj tsawg, thiab tswj kev ntws zoo. Txawm li cas los xij, lawv cov qauv tsim, cov txheej txheem teeb tsa, thiab cov xwm txheej siv sib txawv, ua rau txhua tus haum rau cov xwm txheej tshwj xeeb. Tsab xov xwm no tshawb nrhiav qhov sib txawv tseem ceeb, qhov zoo, qhov tsis zoo, thiab kev siv ntawm lub pob valve lug thiab ob chav flange los coj koj txoj kev txiav txim siab.
1. Lug Butterfly Valve: Tsim thiab Nta
Cov li qub uas muaj cov xov sib txuas, lossis "lugs," ntawm lub cev li qub, uas tso cai rau kev sib txuas ncaj qha rau cov yeeb nkab flanges. Tus qauv tsim no siv ob pawg ntawm cov ntsia hlau ywj pheej yam tsis muaj txiv ntoo, vim tias cov ntsia hlau sib txuas ncaj qha rau hauv cov lugs. Qhov kev teeb tsa zoo li no zoo tagnrho rau kev siv kawg ntawm kab, qhov twg ib sab ntawm cov yeeb nkab tuaj yeem raug txiav tawm yam tsis cuam tshuam rau lwm sab.
Cov yam ntxwv tseem ceeb ntawm Lug Butterfly Valves
- Cov Lus Qhia Txog Xov: Cov Lus Qhia muab cov ntsiab lus mounting robust, ua rau lub valve kom ruaj ntseg ywj pheej rau txhua lub yeeb nkab flange.
- Kev Tsim Qauv Me Me: Lub teeb yuag thiab luv luv, cov qhov rooj nqa khoom txuag qhov chaw, zoo meej rau cov kab ke uas muaj chav tsawg.
- Bidirectional Flow: Cov qhov dej ntws uas kaw tau zoo txhawb nqa kev ntws hauv ob qho kev taw qhia, muab kev hloov pauv tau yooj yim.
- Kev Txij Nkawm Yooj Yim: Qhov kev teeb tsa lug tso cai rau ib sab ntawm cov kav dej kom raug tshem tawm rau kev txij nkawm yam tsis muaj kev cuam tshuam rau lwm sab.
- Kev Ntsuas Siab: Feem ntau haum rau cov ntawv thov siab qis mus rau nruab nrab, txawm hais tias kev ntsuas siab yuav txo qis thaum kawg ntawm kab kev pabcuam.
- Kev Siv Tau Ntau Yam Khoom Siv: Muaj cov ntaub ntawv xws li hlau ductile, WCB, lossis hlau tsis xeb, nrog rau cov kev xaiv rooj zaum xws li EPDM lossis PTFE rau kev tiv taus tshuaj lom neeg.
2. Ob Chav Flange Npauj Npaim Valve: Tsim thiab Nta
Cov li qub ob chav flange muaj cov flanges sib xyaw ua ke ntawm ob sab ntawm lub cev valve, bolted ncaj qha rau cov yeeb nkab flanges sib phim. Qhov kev tsim no ua kom muaj kev sib txuas tsis xau, ua rau nws tsim nyog rau kev siv siab thiab cov ntawv thov loj. Nws cov qauv ruaj khov tiv taus cov zog loj.
Cov yam ntxwv tseem ceeb ntawm Ob Chav Flange Npauj Npaim Valves
- Cov Flanges Sib Koom Ua Ke: Cov Flanges ntawm ob qho kawg txuas rau cov yeeb nkab flanges ntawm cov bolts, kom ntseeg tau tias muaj kev haum zoo.
- Cov Qauv Ruaj Khob: Ua los ntawm cov khoom siv ruaj khov xws li WCB, hlau ductile, lossis hlau tsis xeb.
- Kev Sealing Zoo Tshaj Plaws: Flange tsim kom muaj kev sib khi zoo, txo qis kev pheej hmoo ntawm kev xau hauv cov ntawv thov tseem ceeb.
- Kev ntws ob sab: Ib yam li cov qhov dej, ob lub qhov dej flange txhawb nqa kev ntws hauv ob qho kev taw qhia.
- Txoj Kab Loj: Haum rau cov txoj kab loj dua piv rau cov li qub.
3. Lub Rooj Vag Npauj Npaim Lug vs. Lub Rooj Vag Npauj Npaim Ob Chav Flange
Yuav kom xaiv tau zoo, kev nkag siab txog qhov sib txawv tseem ceeb ntawm cov li qub lug thiab ob chav flange butterfly yog qhov tseem ceeb heev. Hauv qab no yog kev sib piv ntxaws ntxaws ntawm cov yam tseem ceeb:
3.1 Cov yam ntxwv feem ntau
- Kev Yooj Yim Rau Kev Teeb Tsa: Ob qho tib si tso cai rau ib sab ntawm cov kav dej kom raug txiav tawm yam tsis cuam tshuam rau lwm sab, zoo tagnrho rau cov kab ke uas xav tau kev saib xyuas ntau zaus lossis kev cais tawm.
- Tus nqi piv rau Wafer Valves: Vim yog cov threaded lugs lossis dual flanges, ob qho tib si kim dua li wafer valves.
- Cov yam ntxwv sib koom:
- Kev Txhawb Nqa Ob Txoj Kev Nqus Dej: Ob hom valve pab txhawb nqa kev ntws hauv ob qho kev taw qhia, tsim rau cov kab ke nrog cov kev taw qhia dej sib txawv.
- Cov Khoom Siv Ntau Yam: Ob qho tib si tuaj yeem ua los ntawm cov ntaub ntawv zoo sib xws xws li cov hlau carbon, hlau ductile, lossis hlau stainless, nrog rau cov kev xaiv lub rooj zaum (piv txwv li, EPDM lossis PTFE) uas tsim rau cov kua xws li dej, tshuaj lom neeg, lossis roj.
3.2 Qhov Txawv Tseem Ceeb
3.2.1 Lub Tswv Yim Txhim Kho
- Lub Qhov Rooj Vag Npauj Npaim: Siv cov ntsia hlau ib lub taub hau los txuas rau cov yeeb nkab flanges. Cov lugs threaded tso cai rau ob pawg ntawm cov ntsia hlau los ruaj ntseg lub qhov rooj ntawm nws tus kheej yam tsis muaj txiv ntoo, txhawb nqa kev pabcuam thiab kev saib xyuas yooj yim thaum kawg ntawm kab.
- Ob Chav Flange Npauj Npaim Valve: Muaj cov flanges sib xyaw ua ke ntawm ob qho kawg, xav tau kev sib phim nrog cov yeeb nkab flanges thiab bolting. Qhov no ua kom muaj kev sib txuas zoo dua tab sis nyuaj rau kev saib xyuas.
3.2.2 Kev Yooj Yim Rau Kev Teeb Tsa
- Lug Butterfly Valve: Muaj kev ywj pheej ntau dua, vim tias ib sab tuaj yeem raug txiav tawm yam tsis cuam tshuam rau lwm sab, zoo tagnrho rau cov kab ke uas xav tau kev saib xyuas lossis hloov pauv ntau zaus.
- Ob Chav Flange Npauj Npaim Valve: Yuav tsum tau sib dhos thiab bolting rau ob sab, ua rau kev teeb tsa thiab tshem tawm siv sijhawm ntau. Nws muab kev ywj pheej tsawg dua rau kev saib xyuas tab sis kev sib txuas ruaj ntseg dua.
3.2.3 Cov Txoj Kab Uas Siv Tau
- Lug Npauj Npaim Valve: Feem ntau yog li ntawm DN50 txog DN600.Ib lub flange li qubtuaj yeem yog lwm txoj hauv kev rau cov kab ke uas txwv qhov chaw.
- Ob Chav Flange Npauj Npaim Valve: Ntau yam ntawm DN50 txog DN1800. Rau cov kab uas loj dua, cov kev daws teeb meem kev cai muaj thaum thov.
3.2.4 Tus nqi thiab qhov hnyav
- Lug Butterfly Valve: Tsim nyog dua vim nws tsim qauv sib dua, txo cov nqi teeb tsa.
- Lub Qhov Dej Npauj Npaim Ob Chav Flange: Hnyav dua thiab kim dua vim muaj cov flanges sib xyaw ua ke thiab cov khoom siv ntxiv. Cov qhov dej ob chav flange loj yuav xav tau kev txhawb nqa ntxiv vim lawv qhov hnyav.
3.2.5 Kev Txij Nkawm thiab Kev Tshem Tawm
- Lub Rooj Vag Npauj Npaim Lug: Yooj yim dua rau kev rhuav tshem thiab tswj, vim tias ib sab tuaj yeem tshem tawm yam tsis cuam tshuam rau lwm sab.
- Ob Chav Flange Npauj Npaim Valve: Siv zog ntau dua los rhuav tshem vim muaj ntau lub bolts thiab cov kev xav tau sib dhos meej.
4. Xaus Lus
Qhov kev xaiv ntawm ib qho mos-kawlub pob valve npauj npaimthiab ib qhoob chav flange npauj npaim valvenyob ntawm koj lub cev xav tau tshwj xeeb. Cov li qub npauj npaim Lug zoo heev hauv cov ntawv thov uas xav tau kev saib xyuas ntau zaus thiab kev teeb tsa me me. Ob chav flange npauj npaim li qub, nrog lawv cov kev sib khi zoo, zoo dua rau cov kav dej loj thiab cov ntawv thov tseem ceeb. Los ntawm kev soj ntsuam cov yam xws li siab, kev saib xyuas, qhov chaw, thiab peev nyiaj, koj tuaj yeem xaiv lub li qub uas ua kom zoo dua kev ua tau zoo thiab kev siv nyiaj tsim nyog.