Qhov tseem ceeb tshaj plaws ntawm lub valve foob yog lub rooj sib khi ntawm lub valve, tseem hu ua lub nplhaib sealing.Nws yog ib qho tseem ceeb ntawm lub valve sealing khub, uas yog nyob rau hauv ncaj qha kev sib cuag nrog nruab nrab nyob rau hauv lub pipeline.Cov xov xwm hauv cov raj xa dej muaj xws li dej, roj, cov khoom me me, cov kua qaub thiab alkaline, thiab lwm yam. Lub valve seals yuav tsum siv cov khoom sib txawv kom haum rau cov xov xwm sib txawv.Yog li dab tsi yog qhov kev ceev faj rau kev xaiv valve seals?

1. Tensile zog.Tensile zog yog thawj cov khoom uas yuav tsum tau txiav txim siab rau cov ntaub ntawv sealing, xws li: tensile lub zog, tensile kev nyuaj siab, elongation ntawm so thiab mus tas li deformation ntawm break.Common roj hmab seals yogEPDMthiab NBR, thiab lwm yam.

2. Hardness.Qhia txog lub peev xwm ntawm cov khoom sib khi los tiv thaiv kev nkag mus ntawm sab nraud quab yuam, uas kuj yog ib qho ntawm cov khoom siv sib khi.Lub hardness ntawm cov khoom muaj feem xyuam rau lwm yam khoom mus rau ib qho twg.Qhov siab dua qhov hardness, lub zog ntau dua, qhov me dua qhov elongation, thiab hnav tsis kam.Qhov zoo dua, thiab qhov phem tshaj qhov kub tsis kam.
3. Compression siab.Roj hmab foob feem ntau yog nyob rau hauv lub xeev compressed, thiab cov cuab yeej no yog ncaj qha ntsig txog lub durability ntawm lub peev xwm sealing ntawm cov ntawv kaw. 4. Corrosion resistant khoom.Roj-resistant los yog nruab nrab-resistant sealing khoom, tej zaum nyob rau hauv kev sib cuag nrog corrosive media xws li kua qaub thiab alkali nyob rau hauv cov tshuaj lom neeg kev lag luam.Ntxiv rau qhov raug corroded nyob rau hauv cov xov xwm no, nws kuj ua rau nthuav dav thiab txo lub zog ntawm qhov kub thiab txias.Common anti-corrosion seals yogPTFE.

5. Anti-aging.Kev laus ua haujlwm sealing cov khoom yuav ua rau kev ua haujlwm tsis zoo tom qab raug cuam tshuam los ntawm oxygen, ozone, tshav kub, lub teeb, noo noo thiab kev ntxhov siab, uas yog hu ua kev laus ntawm cov khoom sib khi.

Yog tias koj txaus siab rau cov ntsiab lus saum toj no lossis xav kom muaj kev nkag siab ntxiv ntawm valve seals, thovtiv tauj pebrau kev sab laj ntxiv