Muaj ntau hom li qub, tab sis cov kev ua haujlwm yooj yim yog tib yam, uas yog, txuas lossis txiav tawm ntawm qhov nruab nrab ntws. Yog li no, teeb meem sib khi ntawm lub valve yog qhov tseem ceeb.
Txhawm rau kom ntseeg tau tias lub valve tuaj yeem txiav tawm ntawm nruab nrab ntws zoo tsis muaj toaste, nws yog ib qho tsim nyog los xyuas kom meej tias lub valve yog lawm. Muaj ntau cov laj thawj rau lub valve takeage, suav nrog kev sib tiv tauj cov qauv, xoob kom haum rau ntawm lub valve. Zoo, yog li tsim kom muaj qhov teeb meem xau. Yog li no, valve kev siv tshuab yog qhov tseem ceeb technology ntsig txog valve ua tau zoo thiab ua tau zoo, thiab xav tau kev tshawb nrhiav thiab kev tiv thaiv kom tob.
Cov khoom siv feem ntau siv rau cov ntaub ntawv sealing rau cov khoom siv feem ntau suav nrog cov hom hauv qab no:
1. NBR
Cov roj ua tsis tau zoo heev, siab hnav tsis kam, cov cua sov zoo tsis kam, muaj zog adhesion. Nws qhov tsis zoo yog qhov tsis zoo ntawm qhov kub tsis kam, tsis zoo ozone kuj, cov hluav taws xob tsis zoo, thiab qis me me.
2. EPDM
Qhov tseem ceeb tshaj plaws ntawm epdm yog nws superior oxidation tiv, ozone kuj thiab corrosion tsis kam. Txij li thaum EPDM belongs rau polyolefas tsev neeg, nws muaj cov yam ntxwv zoo nkauj heev.
3. PTFE
PTFE muaj cov tshuaj tiv thaiv muaj zog, tiv taus rau feem ntau cov roj thiab cov kuab tshuaj (huab cua tsis kam, tab sis tsis zoo txias.
4. Nrhoo Hlau
NCO TSEG: Cov hlau pov cov hlau yog siv rau dej, roj thiab roj media nrog kub ntawm≤100°C thiab ib qho nominal siab ntawm≤1.6MPA.
5. Nickel-based alloy
NCO TSEG: Nickel-booed alloys yog siv rau pipelines nrog kub ntawm -70 ~ 150°C thiab Engineering siab PN≤20.5MPA.
6. Copper alloy
Copper alloy muaj kev coj zoo thiab tsim nyog rau dej thiab dej kav dej nrog kub≤200℃thiab nominal siab pn≤1.6MPA.
Lub Sijhawm Post: Dec-02-2022
