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 owenziwe kwi-Edison Federal Building e-Chicago. Isayithi yayingomnye wabavelisi bamandla abakhulu be-Edison ngelo xesha. Kwimibhobho yamanzi apho kungekho valve kwaye i-headroom incinci, i-valve iyadingeka. Inkampani kaHenry Pratt (iNkampani kaHenry Pratt) yacelwa ukuba iyile ivalve edibeneyo ukusombulula le ngxaki. Uyilo olusisiphumo sisivalo esinelastiki sesitulo sebhabhathane, esiya kuthi ngenye imini sibe yimveliso ephambili yenkampani.
Kuze kube phakathi kwiminyaka yee-1940, uPratt noWhitney babeza kuvelisa iivalve zebhabhathane eziguquguqukayo kwimeko nganye, kodwa emva kweMfazwe Yehlabathi II, uPratt & Whitney bagqiba ekubeni bayiphuhlise ibe ngumgca wemveliso wamandla kunye nosetyenziso lwamanzi. 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 (enkulu njengoko kufuneka). Umlinganiselo woyilo ufanelekile kwi-ANSI 150 # inqanaba loxinzelelo oluqhelekileyo. Kwiivalvu ezinkulu kune-24in kunye ne-75 ibakala lenkonzo ye-psig, ziyahlangabezana neemfuno ze-ASME Sec. Ukubonelela nge-III ikhowudi yodidi lwe-1678.
Iimpawu zoyilo zechungechunge lwe-1100 ziquka umzimba we-flange, owenziwe ngezinto ezidibana ne-SA-216, 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 nezihlalo zevalve yerabha, ezibotshelelwe ngokusisigxina Okanye zilungiswe ngoomatshini kumzimba wevalvu ngaphandle kokusetyenziswa kwezibophelelo ezinemisonto. I-valve shaft inokuba sisakhiwo esinye esinabela kwi-disc yevalve, okanye inokuqulunqwa nge-shaft enamacandelo amabini afakwe kwi-disc hub yevalve.
Ivalve yomoya yenyukliya ye-1200 ludidi lwesi-2 lwe-ASME kunye noDidi lwe-3 lokhuseleko lwenyukliya olunxulumene nenkonzo yomoya ivelufa yebhabhathane, esukela 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 isiqwenga. I-shaft enamacandelo amabini.
Ivalve yamanzi enyukliya ye-1400 yinqanaba lesi-2 le-ASME kunye nenqanaba lesi-3 lokhuseleko lwenyukliya enxulumene nonikezelo lwamanzi ivelufa yebhabhathane, esukela kubukhulu ukusuka kwi-intshi ezi-3 ukuya kuma-intshi ezingama-24. Umlinganiselo woyilo usebenza kumgangatho woxinzelelo oluqhelekileyo ANSI 150#.
Iimpawu zoyilo kunye nezakhiwo ze-1400 series zifana nezo ze-1100 series, kwaye ukusetyenziswa kwazo kuyafana.
I-Triton XR-70 irubha yokutywina i-butterfly valve ihlangabezana neemfuno ze-AWWA C504, kwaye ubukhulu buvela kwi-24in ukuya kwi-144in. 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 zibandakanya uyilo lwesihlalo sePratt E-Lok 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 ngoku kwimarike, uyilo lwediskhi yokujikeleza lufikelela amandla aphezulu kunye nobunzima obulula. Ikhonkco lenkampani www.henrypratt.com
Ixesha lokuposa: Feb-22-2021
