Valve ya phaphatani ra hard seal
Ku pfariwa ko tiya ka valve ya phaphatani swivula leswaku matlhelo hamambirhi ya mpatswa wo pfalela ya endliwe hi switirhisiwa swa nsimbi kumbe swin’wana swo tiya. Matirhelo ya sealing ya muxaka lowu wa seal aya kahle, kambe yina ku tiya ka mahiselo yale henhla, ku tiya ka ku onhaka xikan’we na matirhelo ya kahle ya michini. Xikombiso: nsimbi+nsimbi; Nsimbi+koporo; Nsimbi+graphite; Nsimbi+nsimbi ya alloy. Nsimbi laha yinga tlhela yiva cast iron, cast steel, alloy steel kumbe alloy yo endla surfacing naku fafazela.
Valve ya phaphatani ra xisirhelelo xo olova
Xisirhelelo xo olova xa valve ya phaphataniswi kombetela eka leswaku tlhelo rin’we ra mpatswa wo pfalela ri endliwe hi swilo swa nsimbi, naswona tlhelo lerin’wana ri endliwe hi swilo leswi nga riki swa nsimbi leswi olovaka. Matirhelo ya ku pfalela ya muxaka lowu wa seal i ya kahle, kambe ayi tiyiseli eka mahiselo yale henhla, ya olova ku ambala, naswona yina matirhelo ya kahle ya michini, kufana na: nsimbi+rhaba; Nsimbi+PTFE, na swin’wana.
Xitulu xa soft seal xi endliwe hi switirhisiwa leswinga riki swa nsimbi leswingana matimba yokarhi, ku tiya xikan’we naku tiya ka mahiselo. Hiku tirha kahle, yinga fikelela zero leakage, kambe vutomi bya yona bya vutirheli xikan’we naku cinca cinca eka mahiselo aswi kahle swinene. Xisirhelelo xo tiya xi endliwe hi nsimbi, naswona matirhelo ya ku pfalela a ya kahle ngopfu. Hambi leswi vaendli van’wana va vulaka leswaku zero leakage yinga fikeleriwa. Soft seal ayi koti ku fikelela swilaveko swa maendlelo eka switirhisiwa swin’wana leswinga bola. Hard seal yinga tlhantlha xiphiqo, naswona ti seal leti timbirhi tinga fambisana. Loko swita eka matirhelo ya ku pfalela, ku pfariwa ko olova swikahle swinene, kambe sweswi matirhelo yo pfalela ya ku pfariwa ko tiya yanga tlhela ya fikelela swilaveko leswi fambelanaka. Swipfuno swa soft seal i matirhelo ya kahle ya sealing, kasi leswinga kahle i ku dyuhala hiku olova, ku onhaka xikan’we na vutomi byo koma bya vutirheli. Hard seal yina vutomi byo leha bya ntirho, kambe matirhelo ya yona yo pfalela ya bihe ngopfu kutlula ya soft seal.
Ku hambana ka xivumbeko ngopfungopfu hi loku landzelaka:
1. Ku hambana ka swivumbeko
Ti valve ta maphaphatani ya soft sealngopfu ngopfu i ya muxaka wa layini yale xikarhi, kasi ti hard seal butterfly valves titala kuva ta muxaka wa single eccentric, double eccentric na triple eccentric.
2. Ku lwisana na mahiselo
Soft seal yitirhisiwa eka ndzhawu ya mahiselo ya ntolovelo. Hard seal yinga tirhisiwa eka mahiselo yale hansi, mahiselo ya ntolovelo, mahiselo yale henhla na tindzhawu tin’wana.
3. Ntshikelelo
Soft seal ntshikelelo wale hansi – ntshikelelo wa ntolovelo, hard seal yinga tlhela yitirhisiwa eka swiyimo swotirha swofana na ntshikelelo wale xikarhi nale henhla.
4. Ku pfalela matirhelo
Matirhelo yo pfalela ya soft sealing butterfly valve na tri eccentric hard sealing butterfly valve ya antswa. Valve ya tri eccentric butterfly yinga hlayisa ku pfariwa kahle ehansi ka ntshikelelo wale henhla xikan’we na ndzhawu ya mahiselo yale henhla.
Hi ku languta swihlawulekisi leswi nga laha henhla, kusoft ku pfalela valve ya phaphataniyi lulamerile ku pfula na ku pfala hi tindlela timbirhi na ku lulamisa tiphayiphi to nghenisa moya na ku susa ntshuri, ku basisiwa ka mati, indasitiri yo vevuka, petroliyamu, indasitiri ya tikhemikhali na tiindasitiri tin’wana. Hard sealing butterfly valve yitirhisiwa ngopfu eka ku kufumeta, mphakelo wa gasi, gasi, oyili, acid na mbango wa alkali.
Hiku tirhisiwa ngopfu ka valve ya phaphatani, swihlawulekisi swa yona swa ku vekiwa loku olovaka, ku hlayisiwa loku olovaka na xivumbeko xo olova swiva erivaleni swinene.Tivalvu ta phaphatani ta gezi ta soft seal, ti- pneumatic soft seal butterfly valves, ti hard seal butterfly valves, na swin’wana swi sungula ku siva ti- electric gate valve, ti globe valve, na swin’wana eka minkarhi yo tala.
Nkarhi wa poso: Oct-08-2022
