Ukuqonda iiValve zeButterfly zeNtsimbi eQinisekisiweyo yoMgangatho

Xa ufuna iivalvu zoshishino, kubaluleke kakhulu ukwazi ukuba umgangatho uthetha ukuthini. Iivalvu zebhabhathane zentsimbi ephothiweyo ziyinxalenye ebalulekileyo yeziseko zolawulo lokuhamba kwamanzi kuba zihlala ixesha elide kwaye zisebenza kakuhle kwiindawo ezifana nezityalo zepetroli, izityalo zonyango lwamanzi, kunye nokufakelwa kwe-HVAC. Ezi valves zijikelezayo zekota zibalulekile kubasasazi kunye nabakhi abafuna ukusebenza okuthembekileyo phantsi koxinzelelo kuba zombini ziqinile kakhulu ngoomatshini kwaye zilungile kakhulu ekuvaleni. Ukuze ukhethe ulwakhiwo oluchanekileyo lwevalvu, kufuneka ulinganise iimfuno zezinto, ukulinganiswa koxinzelelo, kunye nokuthembeka komthengisi. Zonke ezi zizigqibo ezibalulekileyo ezinefuthe ngqo kwixesha lokusebenza kunye nempumelelo yexesha elide leprojekthi.

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intshayelelo

Ukufumana iivalvu zemizi-mveliso akusekho lula njengokuthelekisa amaxabiso. Abaphathi bokuthenga kunye nabakhi bobunjineli namhlanje baphantsi koxinzelelo olungakumbi lokufumana iindawo ezihlangabezana nemigangatho engqongqo yamazwe ngamazwe, zifike ngexesha, kwaye azibizi kakhulu. Iivalvu zebhabhathane zentsimbi eyenziwe ngentsimbi ziye zaba lolona khetho lufanelekileyo kwiimeko ezifuna amandla kunye nokuguquguquka. Oku kuquka iinkqubo zamanzi zikamasipala ezifuna izixhobo ezingagqwaliyo kunye nemigca ye-petrochemical ekufuneka isebenze kwiindawo ezinotshintsho olukhulu kubushushu.

Esi sikhokelo sipheleleyo sithetha ngeengxaki abasasazi beevalvu, iinkampani zorhwebo, kunye nabakhi beziseko zophuhliso abajongene nazo kwihlabathi lokwenyani. Sijonga iinkcukacha zobugcisa, izinto zokukhetha, kunye nezicwangciso zokugcina utyalo-mali lwakho lukhuselekile. Sikwathetha ngendlela ukusebenza nabenzi abanikezela ngokuthunyelwa ngokukhawuleza, ukwenziwa ngokwezifiso kwe-OEM, kunye neenkqubo zokulawula umgangatho ezivavanyiweyo ezinokuguqula ukuthengwa kwenkqubo yentengiselwano kube yinzuzo yesicwangciso. Iingcebiso ezingezantsi ziya kukunceda ngokuzithemba ukhethe iivalvu ezifanelekileyo, nokuba ujongene nokuphatha iimpahla ezinkulu zokusasazwa kwengingqi okanye ukubonelela ngeprojekthi yobunjineli besixeko.

Zithini iiValve zeButterfly zeNsimbi eziQhiyiweyo?

Iivalvu zebhabhathane zentsimbi ezibunjiweyo zisebenza njengezixhobo zokujika ikota ezilawula okanye ezimisa ukuhamba kolwelo kwiipayipi. Idiski engqukuva inamathele kwintonga ejikelezayo ejikeleza ngendlela ethe nkqo kwicala lokuhamba. Xa idiski ithe ngqo ukusuka kumbhobho, ulwelo lunokugeleza lula kuyo. Ukuyijikelezisa ngee-degrees ezingama-90 kwenza isitywina esiqinileyo esimisa ukuhamba konke. Le nkqubo ilula kakhulu yiyo eyenza ezi valve zithandwe kakhulu kwiimeko apho kufuneka zisetyenziswe rhoqo kwaye zibe nomgca omncinci ofanelekileyo.

Amacandelo angundoqo kunye noKwakha

Idiskhi yenziwe ngezinto ezifana nentsimbi engagqwaliyo engama-304, umzimba wevalvu ugcina imo yawo kwaye awugqwali kuluhlu olubanzi lwezinto ezimanzi, ezifana namanzi, amanzi olwandle, ii-asidi ezibuthathaka, kunye nezo ze-alkaline. Idiski, edla ngokwenziwa ngentsimbi ye-304-grade, kufuneka ihlale ilingana nobukhulu nokuba uxinzelelo lutshintsha ukusuka kwi-150 ukuya kwi-300 pounds nge-square intshi kwaye umlinganiselo we-PN utshintsha ukusuka kwi-0.6 ukuya kwi-1.6 megapascals. Iindidi ezahlukeneyo zezinto zokuhlala zisetyenziselwa iinjongo ezahlukeneyo. I-EPDM ilungile kwinkonzo yamanzi ngokubanzi, i-PTFE (Teflon) ilungile kwiikhemikhali eziqatha, kwaye ii-fluororubbers zinokuphatha amaqondo obushushu aphezulu. Ngenxa yokuba iimodyuli zahlukile, abenzi banokudibanisa iivalvu ezifanelekileyo ngokugqibeleleyo kwiimfuno zomsebenzi.

Iindidi zoQwalaselo oluQhelekileyo

Iivalvu zesitayile se-wafer zifakelwa phakathi kweeflanges zepayipi ngokucinezela iibholiti. Zincinci kwaye zinokufakwa kwiindawo ezinesithuba esincinci. Uyilo lwe-Lug-type luneziqwenga ezinemisonto ezivumela inkonzo engapheliyo kunye nokulungiswa okulula ngaphandle kokuchukumisa imibhobho esecaleni kwazo. Ukuseta okuneflanges kunokujongana noxinzelelo oluninzi, kwaye kokufakwa okusisigxina, iiflanges ezihlanganisiweyo zinokudityaniswa okanye zifakwe emzimbeni. Ububanzi obuqhelekileyo buqala kwi-DN15 millimeters zepayipi zasekhaya ukuya kwi-DN1200 millimeters zemigca yetrunk yemizi-mveliso. Iindlela zokuqalisa ziquka ii-levers ezenziwe ngesandla, ii-electric motors, okanye ii-pneumatic cylinders, kwaye zisebenza noyilo lwenkqubo yolawulo oluqala ekuhlukanisweni okulula ukuya kulawulo lwenkqubo oluzenzekelayo ngokupheleleyo.

Iingenelo zeevalvu zeButterfly zentsimbi ephosweyo kunezinye iindlela

Ukukhetha izinto ezinefuthe elikhulu kwindlela esebenza ngayo ivalvu yebhabhathane yentsimbi ephoswe kwimizi-mveliso enzima. Ezinye izinto ezenziwe ngentsimbi ephoswe kwisinyithi zinokuba nexabiso eliphantsi ekuqaleni, kodwa ziyaphuka lula xa zichatshazelwa bubushushu, iikhemikhali, okanye ulwandle. Kuyinyani ukuba iivalvu zentsimbi eziphoswe kwisinyithi zinamandla, kodwa zinzima kwaye zithatha ixesha elide ukuzenza. Ukwakhiwa kwentsimbi engagqwaliyo kuyamelana kakhulu nokugqwala, kodwa kubiza kakhulu, nto leyo enokwenza uhlahlo-lwabiwo mali lweprojekthi lube nzima. Intsimbi ephoswe kwisinyithi yeyona ilungileyo kuzo zombini ezi hlabathi kuba inamandla afanelekileyo okutsalwa komsebenzi oxinzelelweyo kunye nokukhuselwa okungcono kokugqwala kunentsimbi eqhelekileyo yekhabhoni. Ngaphezu koko, amaxabiso aphantsi ngokwaneleyo ukwenza ukuthengwa okukhulu kukhuphisane.

IiNzuzo zokuSebenza kwii-Real-World Application

Xa kuthelekiswa noyilo oluqinileyo, imo yoyilo oluphindwe kabini inciphisa i-torque yokusebenza malunga ne-30%. Oku kungenxa yokuba i-disc shaft ichasene nomgca ophakathi nendawo yokuhlala. Oku kuthetha ukuba ii-actuators ziya kuba zincinci kwaye zingabizi kakhulu, kwaye iindawo ziya kuhlala ixesha elide—ngaphezulu kwemijikelo yokusebenza engama-50,000. Indlela yokuvala egobileyo iqinisekisa ukuba idiski iphakama esihlalweni kwangoko nje ukuba ucango luvuleka, nto leyo ethintela ukuguguleka kokungqubana okwenzeka kwezinye iindlela. Abasebenzi bamanzi bakamasipala bayazithanda ezi zinto kuba zinciphisa inani lamaxesha ekufuneka zigcinwe ngawo. Iinjineli zenkqubo ye-HVAC ziyayithanda indlela echanekileyo yokulawula ukugoba egcina amaqondo obushushu ezinzile nokuba umthwalo utshintsha.

Izibalo zentsimi ezivela kwimisebenzi yeoyile negesi zenza iingenelo zokuthembeka zibonakale ngakumbi. Ngokwesiqhelo, iivalvu zesango zifuna umsebenzi omninzi emva kweenyanga ezili-18 zokusetyenziswa kwizicelo zehydrocarbon. Kodwa iivalvu zebhabhathane ezinezihlalo ze-ethylene-propylene ezichazwe ngokufanelekileyo zihlala zivala ukuvalwa kwebhamuza iminyaka emihlanu nangaphezulu. Iingxaki ezifanayo ziye zaxelwa zizityalo zokucubungula iikhemikhali, apho ulwakhiwo lwe-PTFE oluhlala kwi-media lunokusingatha imidiya ekonakalisayo kumaqondo obushushu akufutshane nemida yokusebenza ngaphandle kokubeka emngciphekweni ukuthembeka kwezitywini. Ezi ndlela zibhaliweyo zokusebenza zichaza isizathu sokuba abathengi abaninzi abaphindaphindayo besenza imigangatho kwiivalvu zebhabhathane zentsimbi ephosiweyo kumacandelo amaninzi emizi-mveliso.

Ungayikhetha njani iValve yeButterfly yeNtsimbi eQhelekileyo?

Ukuze ukhethe ngokufanelekileyo iivalvu zebhabhathane zentsimbi ephoswe ngentsimbi, kufuneka ulinganise iimpawu zenkqubo kunye neemfuno zayo zokusebenza. Xa ucinga ngemilinganiselo yoxinzelelo, kufuneka ucinge ngeemeko zokusebenza eziqhelekileyo kunye neziganeko ezinokwenzeka zokukhuphuka. Izinto zokhuseleko zithintela ukungaphumeleli koxinzelelo ukuba kwenzeke ngexesha lokujika okwethutyana. Ububanzi bobushushu buchaphazela indlela izixhobo ezahlukeneyo zesihlalo ezisebenza ngayo kunye. Umzekelo, i-EPDM isebenza kakuhle kwiimeko eziqhelekileyo zamanzi kodwa ikhawuleza iqhekeke ngaphezu kwama-60 degrees Celsius, ngelixa irabha ye-silicone ihlala iguquguquka nangona amaqondo obushushu etshintsha kakhulu. Xa kufikwa ekuhambelaneni kwemidiya, kukho izinto ezininzi ekufuneka ucinge ngazo kunokugqwala nje. Ezi ziquka umxholo wezinto ezincinci, i-viscosity, kunye nethuba lomonakalo we-cavitation ngexesha lemisebenzi yokubhoboza.

Ukuvavanya ubuchule boMboneleli

Iinkcukacha ziyinxalenye enye nje yebali lokuthenga ivalvu yebhabhathane yentsimbi ephosiweyo . Impumelelo yomsasazi ixhomekeke ekubeni ababoneleli bakhe bathembeke kangakanani, ingakumbi xa kufikwa kubungakanani beempahla abanazo kunye nokuba banokuzisa ngokukhawuleza kangakanani. Abavelisi abagcina ulungelelwaniso oluninzi oluqhelekileyo esitokhweni, oluhlala lunobukhulu obuqala kwi-DN50 ukuya kwi-DN600, banokuhlangabezana neemfuno ezingxamisekileyo kwiintsuku ezintathu ukuya kwezisixhenxe, nto leyo egcina iiprojekthi zingalibaziseki, nto leyo ebiza imali eninzi. Ukwenziwa ngokwezifiso kubaluleke kakhulu kubathengi be-OEM kunye nokusetyenziswa okuthile. Ababoneleli abanikezela ngeenkonzo ze-ODM banokutshintsha izinto zomzimba, ulungelelwaniso lwezihlalo, kunye neendlela zoqhagamshelo ngokusekelwe kwimizobo yobunjineli echanekileyo, kwaye banokukwenza oku kwiintsuku ezilishumi elinesihlanu ukuya kwezingamashumi amabini anesihlanu.

Ukufumana isiqinisekiso yindlela ebalulekileyo yokunciphisa amathuba okwenza ishishini kwihlabathi liphela. Iinkqubo zolawulo lomgangatho we-ISO 9001 ziqinisekisa ukuba iinkqubo zokuvelisa zihlala zifana. Iziqinisekiso ze-ISO 14001 kunye ne-OHSAS 18001 zibonisa ukuba inkampani iyayikhathalela indalo esingqongileyo kunye namalungelo abasebenzi, nto leyo ehambelana nolindelo loxanduva lwenkampani. Ukuthobela i-API, i-ANSI, kunye ne-DIN kungqina imigangatho yokusebenza kunye nokulinganisa eyamkelweyo kwiimarike kwihlabathi liphela. Oku kwenza inkqubo yeenkcukacha ibe lula kwaye kunciphisa umngcipheko weengxabano zobugcisa. Iingcali ekuthengeni kufuneka ziqinisekise ukuba iingxelo zovavanyo, izatifikethi zezinto eziphathekayo, kunye namaxwebhu okuthobela imithetho zihlala zifumaneka kulo lonke ixesha lemveliso. Oku kuya kuxhasa iimfuno zokulandelelwa kwaye kwenze kube lula ukufaka ibango lewaranti ukuba kuyimfuneko.

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Izinto Eziqwalaselwayo Ngeendawo Zokufumana Imithombo

Indawo yefektri inefuthe elikhulu kumaxabiso apheleleyo afikelelweyo kunye nokuthembeka kwekhonkco lokubonelela. Abavelisi baseTshayina, ngakumbi abo bakwiindawo zoshishino ezifana neTianjin's Beichen District, basebenzisa ithuba leenkqubo zemveliso ezizinzileyo kunye nokusondela kwamazibuko ukubonelela ngamaxabiso afanelekileyo kunye nokuhanjiswa okukhawulezayo okumangalisayo. Izibonelelo ezingaphantsi kweekhilomitha ezingamashumi amahlanu ukusuka kwiindawo ezinkulu zokuthumela iimpahla zikhawulezisa ukulayisha izikhongozeli kwaye zinciphisa iindleko zokuthutha ngaphakathi, nto leyo ekhokelela kwiingcaphuno ezingcono zeFOB kunye neCIF. Ubudlelwane neenqwelo-moya zamazwe ngamazwe ezifana neCOSCO Shipping kunye neMaersk ziqinisekisa ukuba ukubhukisha kuhlala kufumaneka ngamaxesha axakekileyo, kwaye ukupakisha okuhlangabezana nemigangatho ye-ISPM 15 kugcina ukulibaziseka kwerhafu kumazibuko okuya kuwo kuncinci. Ezi ziintlobo zeenkcukacha zokusebenza ezihlukanisa ababoneleli abaziingcali kubathengisi bempahla.

Iingcebiso Zokugcina Izinto Ezifunekayo Neengxaki Eziqhelekileyo Okufanele Uziphephe

Izicwangciso zokulungisa ezicwangcisiweyo zigcina iivalvu zebhabhathane zentsimbi ephothiweyo zisebenza ixesha elide kwaye ziyeke ukuvala ngaphandle kwesilumkiso, nto leyo enokuphazamisa ukusebenza kwaye inciphise inzuzo. Izicwangciso zokuhlola kufuneka zihambelane nenqanaba lomsebenzi. Umzekelo, iivalvu ezijikeleza amaxesha amaninzi ngemini kufuneka zihlolwe rhoqo emva kweenyanga ezintathu, ngelixa iiyunithi zenkonzo ezahlukeneyo zinokufuna ukujongwa kube kanye ngonyaka. Ukuhlolwa okubonakalayo kujonga umhlwa ngaphandle, umonakalo kwi-actuator mounting, kunye nemeko yejoyinti yokupakisha. Uvavanyo olusebenzayo luqinisekisa ukusebenza kakuhle kulo lonke ujikelezo lwe-90 degrees. Nakuphi na ukumelana okungaqhelekanga kubonisa ukubopha kwesiqu okanye ukwakheka kwenkunkuma ekufuneka kujongwe kwangoko.

Ukujongana neendlela eziqhelekileyo zokusilela

Ukuvuza ngaphaya kwesihlalo kudla ngokubangelwa zizinto ezintathu: izinto zangaphandle ezinamathela phakathi kwediski nesihlalo ngelixa ivaliwe; ukwanda kobushushu obukhulu kakhulu kuyilo; okanye izinto zesihlalo eziqhekekayo ngenxa yokuhlaselwa yikhemikhali okanye ubudala. Ukuhlanjwa rhoqo ngaphambi kokuvala kuthintela inkunkuma ukuba ingabambeki, kwaye ukukhetha izinto ezifanelekileyo kuthintela iikhemikhali ukuba zingasebenzi kunye. Umonakalo wokugqwala uhlala uqokelelana kwiindawo apho isantya sokuhamba kokukhusela siwela ngaphantsi kwamanqanaba abalulekileyo. Ukubeka ii-epoxy resin coats ngaphakathi kwezinto kunika ukhuseleko olongezelelweyo kwiindawo ezinomswakama omninzi. Oku kuluncedo ngakumbi kwiindawo ezifakelwe kuMzantsi-mpuma we-Asia, apho ukufuma kwenza ukugqwala kwenzeke ngokukhawuleza.

Ukugcinwa kwe-Actuator kubaluleke kakhulu njengokugcinwa kwevalvu yebhabhathane yentsimbi ephoswe ngentsimbi kuba ukuba i-actuator yonakala ngoomatshini, yonke indibano ayinakusebenza, nokuba imeko yeevalvu injani na. Ulawulo lweemoto zombane kufuneka lufakwe ioyile kwaye iiswitshi zazo zomda zilinganiswe rhoqo ukuze zingaphuki ekuhambeni kakhulu. Iinkqubo ze-pneumatic kufuneka zikhuphe amanzi kwiindlela zazo zokwahlula umswakama kwaye izitywino zazo zihlolwe rhoqo kuba umoya ongcolileyo ocinezelweyo ukhawulezisa ukuguguleka kwaye wenza indawo yokuma ingachaneki. Xa abaqhubi bezandla bejika, i-torque kufuneka ihlale igudile kwaye ingaguquguquki. Ukwanda kwe-torque ngequbuliso kufuneka kuthetha ukuba isiqu siyabola okanye ii-bushings ziyaguga, ngoko ke umatshini kufuneka ususwe kwaye iindawo ezigugileyo zitshintshwe ngaphambi kokuba kwenzeke ukusilela okukhulu.

isiphelo

Ukuze ukhethe iivalvu zebhabhathane zentsimbi entle, kufuneka ulinganise iimfuno zobugcisa ngokuthelekisa izakhono zomthengisi kunye neendleko zizonke zobunini. Eyona ndlela ilungileyo yokuthenga izinto kukwazi ukuba ukusebenza kwevalvu kuxhomekeke kokungaphezulu nje kohlobo lwezinto ezisetyenzisiweyo kunye nomgangatho woxinzelelo. Kukwaxhomekeke ekubeni yenziwe kakuhle kangakanani, ihlolwe kakuhle kangakanani, kunye nokuba iinkqubo zilungelelaniswe kakuhle kangakanani na. Xa abasasazi kunye nabathengisi besebenza nabavelisi ababonelela ngokukhetha okukhulu, ukukwazi ukwenza ngokwezifiso iimveliso, ukuhanjiswa ngokukhawuleza, kunye neziqinisekiso ezinokujongwa, kunye nenkxaso epheleleyo yobugcisa, bafumana iingenelo zokhuphiswano ezidlula nje ukuthelekisa amaxabiso. Njengoko iifektri kwihlabathi liphela zifuna ukuthembeka nokusebenza kakuhle, inkqubo yokukhetha iivalvu iyatshintsha ukusuka ekuzithengeni kube kanye ukuya ekwakheni ubudlelwane obucwangcisiweyo nabathengisi.

FAQ

1. Yintoni eyahlula iivalvu zentsimbi ephosiweyo kwiinketho zentsimbi engagqwaliyo?

Umahluko ophambili ukwiintlobo zezinto ezisetyenzisiweyo kunye nomlinganiselo weendleko zokusebenza. Iivalvu zebhabhathane zentsimbi ephothiweyo, ezidla ngokuba zeze-WCB grade, zinamandla okutsalwa kunye nozinzo lobushushu, nto leyo ezenza ukuba zilungele ukusetyenziswa nee-hydrocarbons kunye nomphunga. Ikwabiza kancinci kune-austenitic stainless grades. Kodwa i-304 stainless steel ingcono ekumelaneni nokugqwala kwiindawo ezinobuthi kunye ne-chloride eninzi. Oku kuyenza ibe ngcono kumanzi olwandle, ekucutshungulweni kweekhemikhali, kunye nokusetyenziswa kwe-food-grade apho ixabiso eliphezulu liqinisekiswa kukuba izixhobo zisebenza kakuhle kunye.

2. Iivalvu zeebhabhathane kufuneka zihlolwe kangaphi ngolondolozo?

Amaxesha okulungisa axhomekeke kakhulu ekubeni i-media ijikeleziswa kangaphi kunye nendlela esebenza ngayo. Iivalvu ezisebenza ngamanzi acocekileyo kwaye ezingadingi kuhlolwa rhoqo zinokufuneka zihlolwe kube kanye ngonyaka. Kwelinye icala, iiyunithi ezijongana ne-abrasive slurry okanye ezijikeleza amaxesha amaninzi ngemini kufuneka zihlolwe rhoqo kwiinyanga ezintathu. Ngokujonga iindlela zokusebenza kwe-torque, unokubona iingxaki kwangethuba, ngaphambi kokuba zibe nkulu kakhulu ukuba zingalungiswa.

3. Ngaba ezi valves zingaphatha ukusetyenziswa kobushushu obuphezulu ngokuthembekileyo?

Ukulingana kobushushu kuxhomekeke kuhlobo lwezinto ezikhethiweyo zesihlalo, kungekhona kwindlela umzimba owakhiwe ngayo. Izitulo ze-EPDM kunye nezitulo eziqhelekileyo ze-ethylene-propylene zingasetyenziswa kuphela kumaqondo obushushu afikelela kuma-80 degrees Celsius, kodwa ulungelelwaniso lwe-PTFE lungasetyenziswa kumaqondo obushushu afikelela kwi-158 degrees Celsius. Kwanamaqondo obushushu aphezulu anokuphathwa ziindlela ezikhethekileyo ezenziwe ngerabha ye-fluorine kunye nezitulo zesinyithi, kodwa iinkcukacha ezifanelekileyo kufuneka ziqinisekiswe yinjineli eyaziyo ngesicelo esithile.

Sebenzisana ne-ZTVK kwizisombululo zeValve zeButterfly Valve ezithembekileyo zeCast Steel

I-ZTVK ibingumvelisi okhethekileyo kangangeminyaka engaphezu kweshumi elinesihlanu kwaye inokunceda kwiingxaki zokufumana iivalvu zehlabathi. Isakhiwo sethu saseTianjin sigcina iiyunithi zoqwalaselo ezisemgangathweni ezingaphezu kwama-2,000 esitokhweni, oko kuthetha ukuba singazisa kwiimfuno ezingxamisekileyo kwiintsuku ezintathu ukuya kwezisixhenxe kwaye sinikezele ngokwezifiso ezipheleleyo kwiimfuno ezikhethekileyo. Singumvelisi oqinisekiswe yi-ISO 9001, ISO 14001, kunye ne-OHSAS 18001, kwaye iimveliso zethu ziyahlangabezana nemigangatho ye-API, ANSI, kunye ne-DIN. Sikwabonelela ngamaxwebhu apheleleyo okulandelelwa ukuxhasa iimfuno zakho zokuthobela umthetho.

Sikwiikhilomitha ezingamashumi amahlanu kuphela ukusuka eTianjin Port, nto leyo eyenza kube lula ukulayisha izikhongozeli ngokukhawuleza kwaye ufumane amaxabiso e-FOB akhuphisanayo. Sikwanobudlelwane obuhle nabathwali abasivumela ukuba sinike iikowuteshini ze-CIF ezichanekileyo zokuthunyelwa kwiindawo ezahlukeneyo zehlabathi. Iqela lethu lobunjineli libonelela ngenkxaso yobuchwepheshe ekhawulezileyo, iziqinisekiso ezipheleleyo, kunye noncedo lokufakela, nokuba ungumhambisi ofuna iinkqubo zophawu lwe-OEM, umakhi ophethe ukuthenga okusekelwe kwiprojekthi, okanye umenzi wezixhobo ofuna ukuhlanganiswa kweevalvu ezenziwe ngokwezifiso. Nxibelelana neearhente zethu zokuthenga ku-ktec86961886@163.com ukuze uthethe ngendlela ukwenziwa kweevalvu zebhabhathane zentsimbi ye-ZTVK okunokunceda ngayo uthotho lwakho lokubonelela kwaye kwenze abathengi bakho bonwabe ngakumbi.

Ucaphulo

1. I-American Petroleum Institute. (2018). Umgangatho we-API 609: Iivalvu zeButterfly - Uhlobo oluphindwe kabini, olunezihlangu kunye nolweWafer. IWashington, DC: Iinkonzo zokuPapasha ze-API.

2. ASME International. (2020). ASME B16.34: Iivalvu - Isiphelo EsineFlanged, Threaded, kunye neWelding. ENew York: Umbutho waseMelika weeNjineli zooMatshini.

3. Iziko leMigangatho yaseBritane. (2017). BS EN 593: Iivalvu zeMizi-mveliso - Iivalvu zeBhabhatha zeMetallic ngeenjongo ezibanzi. ILondon: Ukupapashwa kweMigangatho yeBSI.

4. I-International Organisation for Standardization. (2019). I-ISO 5752: Iivalvu zesinyithi ezisetyenziswa kwiinkqubo zemibhobho ejikelezileyo - Ubukhulu boBuso noBuso kunye noBuphakathi noBuso. IGeneva: I-ISO Central Secretariat.

5. Lyons, JL kunye no-Askeland, DR (2016). Isayensi noBunjineli beZixhobo (uhlelo lwesi-7). IBoston: Ukufunda kweCengage.

6. Zappe, RW (2021). Incwadi Yokukhetha Iivalvu: Iziseko Zobunjineli Zokukhetha Uyilo Lwevalvu Oluchanekileyo Kuzo Zonke Iisicelo Zokuhamba Kwemizi-mveliso (uhlelo lwesi-6). IHouston: I-Gulf Professional Publishing.