Xikongomelo xaku tirhisa check valve iku sivela ku khuluka ka le ndzhaku ka medium, naswona check valve hi ntolovelo yi vekiwa eka outlet ya pompo. Ku engetela kwalano, check valve yifanele kutlhela yi vekiwa eka outlet ya compressor. Hiku komisa, leswaku kuta sivela ku khuluka ka le ndzhaku ka xitirhisiwa, valve yo kambela yifanele ku vekiwa eka switirhisiwa, xitirhisiwa kumbe phayiphi.
Hiku angarhela, ti vertical lift check valves titirhisiwa eka ti pipelines letinga horizontal letingana nominal diameter ya 50mm. Valava yo kambela ku tlakusa leyi kongomeke yinga vekiwa eka tiphayiphi letinga horizontal na leti yimisiweke. Valve yale hansi hi xitalo yi vekiwa ntsena eka phayiphi leyi yimisiweke ya ndzhawu yo nghena ya pompo, naswona medium yi khuluka kusuka ehansi kuya e henhla.
Swing check valve yinga endliwa ntshikelelo wale henhla swinene wo tirha, PN yinga fika eka 42MPa, naswona DN yinga tlhela yi endliwa yikulu swinene, maximum yinga fika kutlula 2000mm. Kuya hi switirhisiwa swohambana hambana swa shell na seal, yinga cheriwa eka ndzhawu yin’wana na yin’wana yo tirha na mahiselo wahi na wahi yo tirha. Xitirhisiwa lexi i mati, steam, gasi, corrosive medium, oyili, swakudya, murhi, etc. Mahiselo yo tirha ya medium yale xikarhi ka -196~800°C.
Ndzhawu yo veka swing check valve ayi pimiwanga, hi ntolovelo yi vekiwa eka phayiphi leyi nga horizontal, kambe yinga tlhela yi vekiwa eka phayiphi leyi yimisiweke kumbe phayiphi leyi rhetaka.
Xiendlakalo lexi tirhaka xa valve yo kambela maphaphatani i ntshikelelo wa le hansi na diameter leyikulu, naswona nkarhi wo veka wu ringaniseriwile. Hikuva ntshikelelo wo tirha wa butterfly check valve awungava e henhla swinene, kambe nominal diameter yingava yikulu swinene, leyinga fikaka kutlula 2000mm, kambe ntshikelelo wa vito wule hansi ka 6.4MPa. Valve yo kambela maphaphatani yinga endliwa muxaka wa wafer, leyi hi xitalo yi vekiwa exikarhi ka ti flanges timbirhi ta phayiphi hi xivumbeko xa wafer connection.
Ndzhawu yo veka butterfly check valve ayi pimiwanga, yinga vekiwa eka horizontal pipeline, vertical pipeline kumbe inclined pipeline.
Diaphragm check valve yi lulamerile eka tiphayiphi leti talaka ku va na hammer ya mati. Diaphragm yinga herisa kahle hammer ya mati leyi vangiwaka hiku khuluka ka le ndzhaku ka medium. Tanihi leswi mahiselo yo tirha na ntshikelelo wa ntirho wa ti diaphragm check valves swi pimiweke hi switirhisiwa swa diaphragm, hi ntolovelo swi tirhisiwa eka tiphayiphi ta ntshikelelo wa le hansi na mahiselo ya ntolovelo, ngopfu ngopfu eka tiphayiphi ta mati ya le pompini. Hiku angarhela, mahiselo yo tirha ya medium yale xikarhi ka -20~120°C, naswona ntshikelelo wo tirha wule hansi ka 1.6MPa, kambe diaphragm check valve yinga fikelela diameter leyikulu, naswona DN yale henhla yinga tlula 2000mm.
Diaphragm check valve yitirhisiwile ngopfu eka malembe lawa yanga hundza hikokwalaho ka matirhelo ya yona ya kahle swinene ya mati, xivumbeko xo olova swinene xikan’we na ntsengo wale hansi wa vumaki.
Valve yo kambela bolo yina matirhelo ya kahle yo pfalela, ntirho lowu tshembekaka xikan’we naku tiya ka kahle ka hammer ya mati hikuva seal i xirhendzevutani lexi funengetiweke hi rhaba; naswona hikuva xilemo xi nga va bolo yin’we kumbe mabilomu yo tala, xi nga endliwa xi va dyayimeta leyikulu . Hambiswiritano, xisirhelelo xa yona i xirhendzevutana lexi nga ni xirhendzevutana lexi funengetiweke hi rhaba, lexi nga ringanelangiki eka tiphayiphi ta ntshikelelo wa le henhla, kambe xi lulamerile ntsena eka tiphayiphi ta ntshikelelo wa le xikarhi ni wa le hansi.
Leswi swilo swa shell swa ball check valve swinga endliwa hi stainless steel, naswona hollow sphere ya seal yinga funengetiwa hi PTFE engineering plastic, yinga tlhela yitirhisiwa eka tiphayiphi letingana general corrosive media.
Mahiselo yo tirha ya muxaka lowu wa check valve yale xikarhi ka -101~150°C, ntshikelelo wa vito i ≤4.0MPa, naswona nominal diameter range yile xikarhi ka 200~1200mm.
Nkarhi wa poso: Mar-23-2022
