ductile iron irabha seal butterfly valve

Inkampani kaHenry Pratt ngumvelisi ohamba phambili weevalvu kunye nokufakelwa, kunye neminyaka engaphezu kwe-60 yamava ekuboneleleni ngeenkonzo kwishishini lamandla. I-Pratt yaziswa kwishishini lamandla ngomsebenzi wokulondoloza kwi-Edison Federal Building eChicago. Isayithi yayingomnye wabavelisi bamandla abakhulu be-Edison ngelo xesha. Kwimibhobho yamanzi apho kungekho valve kwaye i-headroom incinci, i-valve iyadingeka. Inkampani kaHenry Pratt yacelwa ukuba iyile ivalve ebambeneyo ukusombulula le ngxaki. Uyilo olusisiphumo sisivalo esinelastiki sesitulo sebhabhathane, esiya kuthi ngenye imini sibe yimveliso ephambili yenkampani. Kuze kube phakathi kwe-1940s, uPratt & Whitney baqhubeka nokuvelisa iivalve zebhabhathane eziguquguqukayo ngokwemeko, kodwa emva kweMfazwe Yehlabathi II, uPratt & Whitney bagqiba ekubeni baphuhlise umgca wamandla kunye nezicelo zamanzi. Namhlanje, uHenry Pratt uye waba yinkokeli kwiimarike zombane kunye namanzi. Ivalve yamanzi enyukliya ye-1100 yinqanaba lesi-2 le-ASME kunye ne-3 enxulumene nokhuseleko lwenyukliya enxulumene nonikezelo lwamanzi ivelufa yebhabhathane, esukela kubukhulu obusuka kwi-intshi ezi-6 ukuya kwi-intshi ezingama-36 (kwaye inkulu njengoko kufuneka). Umlinganiselo woyilo ufanelekile kwibakala loxinzelelo oluqhelekileyo lwe-ANSI 150 #. Kwiivalvu ezinkulu kune-24in kunye ne-75 inqanaba lenkonzo ye-psig, ziyahlangabezana neemfuno ze-ASME Sec. Ukubonelela ngekhowudi ye-III ididi 1678. Iimpawu zoyilo ze-1100 series ziquka i-valve ye-flanged body eyenziwe ngezinto ezidibana ne-SA-216, i-Gr. WCB okanye SA-516, Gr. 70; I-disc ye-valve, enokuthi yenziwe okanye iphoswe, okanye yenziwe nge-carbon steel, ngelixa i-carbon steel disc inomphetho wesihlalo sevalve yensimbi engenasici egubungela yonke ububanzi bendawo yokunyuka; kunye nesihlalo sevalve yerabha, esisigxina okanye egxininiswe ngoomatshini kwivalve Emzimbeni, akukho zibophelelo ezinentambo ezifunekayo. I-valve shaft ingaba sisakhiwo esinye esinabela kwi-disc ye-valve, okanye inokuqulunqwa kwi-shaft-piece-piece shaft efakwe kwi-disc hub ye-valve. Ivalve yomoya yenyukliya ye-1200 yi-ASME Udidi lwesi-2 kunye noDidi 3 lwenkonzo yokhuseleko lwenyukliya enxulumene nenkonzo yomoya ivelufa yebhabhathane, esusela kubukhulu obusuka ku-6in ukuya kuma-48in. Umgangatho woyilo ufana nochungechunge lwe-1100. Ngokufana nochungechunge lwe-1100, iimpawu zoyilo zechungechunge lwe-1200 zibandakanya umzimba we-flange, i-disc ye-valve yesakhiwo okanye i-cast steel structure kunye nesihlalo serabha esisisigxina kunye nesilungelelanisiweyo, kunye nesiqu se-valve sinokuba yinto enye okanye enye- isakhiwo seqhekeza. I-shaft enamacandelo amabini. Ivalve yamanzi enyukliya ye-1400 yinqanaba lesi-2 le-ASME kunye ne-3 lokhuseleko lwenyukliya enxulumene nonikezelo lwamanzi ivelufa yebhabhathane, esukela kubukhulu obusuka kwi-intshi ezi-3 ukuya kwi-intshi ezingama-24. Ukulinganiswa koyilo kuyasebenza kumgangatho woxinzelelo oluqhelekileyo ANSI 150 #. Iimpawu zoyilo kunye nezakhiwo ze-1400 series zifana nezo ze-1100 series, kwaye ukusetyenziswa kwazo kuyafana. I-valve ye-butterfly etywiniweyo ye-Triton XR-70 ihlangabezana neemfuno ze-AWWA C504, kunye nobukhulu obuvela kwi-intshi ezingama-24 ukuya kwi-intshi ze-144. Isitayela somzimba we-valve eqhelekileyo yi-flange x isiphelo se-flange, i-mechanical joint (MJ) ekupheleni (24in-48in) kunye ne-flange kunye ne-MJ ekupheleni (24in, 30in kunye ne-36in). Iimpawu zeTriton ziquka i-Pratt E-Lok isihlalo soyilo kunye noyilo lwetreyi yokujikeleza. Uyilo lwesitulo sevalve ye-E-Lok luyamkelwa, kwaye isihlalo sevalve yerabha sifakwe kumzimba wevalvu ukubonelela ngokuvalwa komoya. Xa kuthelekiswa naluphi na olunye uyilo lwediskhi okwangoku kwimarike, uyilo lwediskhi yokujikeleza lufezekisa amandla aphezulu kunye nobunzima obulula. Ikhonkco lenkampani www.henrypratt.com