i-ductile iron rubber seal butterfly valve

Inkampani kaHenry Pratt ingumkhiqizi ohamba phambili wamavalvu nokufakwa, oneminyaka engaphezu kwengama-60 yesipiliyoni ekuhlinzekeni ngezinsizakalo embonini yamandla. UPratt wethulwa embonini kagesi ngomsebenzi wokulungisa e-Edison Federal Building eChicago. Isayithi lalingomunye wabakhiqizi bamandla abakhulu be-Edison ngaleso sikhathi. Emapayipini amanzi lapho ingekho i-valve futhi i-headroom incane, i-valve iyadingeka. I-Henry Pratt Company yacelwa ukuba idizayine ivalvu ehlangene ukuze ixazulule le nkinga. Umklamo owumphumela uyi-valve yesihlalo esinwebekayo sovemvane, ngelinye ilanga ezoba umkhiqizo oyinhloko wenkampani. Kuze kube maphakathi nawo-1940, uPratt noWhitney baqhubeka nokukhiqiza amavalvu ovemvane ahlezi ezishintshashintshayo ngokwesimo, kodwa ngemva kweMpi Yezwe II, uPratt & Whitney banquma ukuyithuthukisa ibe umugqa wokusebenzisa amandla namanzi. Namuhla, uHenry Pratt usephenduke umholi ezimakethe zikagesi namanzi. Ivalvu yamanzi enuzi ewuchungechunge engu-1100 iyileveli ye-ASME 2 kanye ne-3 ye-nuclear ehlobene nokuphepha kwe-butterfly valve, esukela ngosayizi osuka kumayintshi angu-6 ukuya kwangu-36 amayintshi (futhi mkhulu njengoba kudingeka). Isilinganiso somklamo sifanele izinga lokucindezela elijwayelekile le-ANSI 150#. Kumavalvu amakhulu kuno-24in kanye neleveli yesevisi ye-psig engu-75, ahlangabezana nezimfuneko ze-ASME Sec. Nikeza isigaba sekhodi ye-III 1678. Izici zokuklama zochungechunge lwe-1100 zifaka umzimba we-valve ene-flanged eyenziwe ngezinto ezihlangabezana ne-SA-216, Gr. I-WCB noma i-SA-516, Gr. 70; I-valve disc, engakhiwa noma iphonswe, noma yenziwe nge-carbon steel, kuyilapho i-carbon steel disc inomphetho wesihlalo se-valve yensimbi engagqwali emboza bonke ububanzi bendawo ekhuphukayo; kanye nesihlalo se-valve yenjoloba, esilungiswe unomphela noma esimiswe ngomshini ku-valve Emzimbeni, azikho izibophelelo ezinentambo ezidingekayo. I-valve shaft ingaba isakhiwo esiwucezu olulodwa esidlulela kudiski ye-valve, noma ingakhiwa i-shaft enezingcezu ezimbili efakwe kuhabhu le-valve disc. I-valve yomoya we-nuclear yochungechunge engu-1200 yi-ASME Class 2 kanye ne-Class 3 ye-nuclear ehlobene nesevisi ye-air butterfly valve, esukela ngosayizi osuka ku-6in kuya ku-48in. Izinga lokuklama liyafana nochungechunge lwe-1100. Ngokufana nochungechunge lwe-1100, izici zokuklama zochungechunge lwe-1200 zihlanganisa umzimba we-flange, i-disc ye-valve yesakhiwo sensimbi esenziwe ngaphambili noma esakhiwe esinesihlalo senjoloba esingaguquki futhi esilungisekayo, futhi isiqu se-valve singaba ucezu olulodwa noma eyodwa- isakhiwo socezu . I-shaft enezicucu ezimbili. I-valve yamanzi enuzi ewuchungechunge engu-1400 iyileveli ye-ASME 2 kanye ne-3 ye-nuclear ehlobene nokuphepha kwe-butterfly valve, esukela ngosayizi ukusuka kumayintshi angu-3 ukuya kwangu-24 amayintshi. Isilinganiso somklamo sisebenza esilinganisweni sokucindezela esijwayelekile esingu-ANSI 150#. Izici zokuklama nezinto zokwakha zochungechunge lwe-1400 zifana nalezo zochungechunge lwe-1100, futhi ukusetshenziswa kwazo kuyafana. Ivalvu uvemvane evalwe ngerabha i-Triton XR-70 ihlangabezana nezidingo ze-AWWA C504, enosayizi osuka kumayintshi angu-24 ukuya kwangu-144. Isitayela somzimba we-valve esijwayelekile siyi-flange x isiphetho se-flange, isiphetho se-mechanical joint (MJ) (24in-48in) kanye ne-flange kanye nesiphetho se-MJ (24in, 30in kanye ne-36in). Izici ze-Triton zifaka ukwakhiwa kwesihlalo se-Pratt E-Lok kanye ne-circulation tray design. Idizayini yesihlalo se-valve ye-E-Lok iyamukelwa, futhi isihlalo se-valve yenjoloba sifakwe emzimbeni we-valve ukunikeza ukuvala okungangeni komoya. Uma kuqhathaniswa nanoma yimiphi eminye imiklamo yediski emakethe njengamanje, idizayini ye-circulation disc ifinyelela amandla aphezulu ngesisindo esilula. Isixhumanisi senkampani www.henrypratt.com