Izinga le-AWWA lithi I-American Water Works Association yaqala ukushicilela imibhalo yokuvumelana ngo-1908. Namuhla, kunamazinga e-AWWA angaphezu kuka-190.Kusukela emthonjeni kuya endaweni yokugcina, kusukela ekuphathweni kuya ekusatshalalisweni, Amazinga e-AWWA ahlanganisa imikhiqizo nezinqubo ezihlobene nazo zonke izindawo zokuhlanza nokunikezwa kwamanzi.I-AWWA C504 ingeyommeleli ojwayelekile, iwuhlobo lwevalve uvemvane lwesihlalo semfucumfucu.
I-valve uvemvane i-AWWA C504 inezinhlobo ezimbili, umugqa omaphakathi wophawu oluthambile kanye ne-double eccentric soft seal, imvamisa, intengo ye-midline soft seal izoba ishibhile kune-double eccentric, yebo, lokhu ngokuvamile kwenziwa ngokwezidingo zamakhasimende.Ngokuvamile ingcindezi yokusebenza ye-AWWA C504 ingu-125psi, 150psi, 250psi, izinga lokucindezela kwe-flange liyi-CL125, CL150, CL250.
I-valve ye-butterfly ye-AWWA C504 isetshenziswa ikakhulukazi kumaphrojekthi wokwelapha amanzi, i-medium edingekayo ingamanzi angenakho ukungcola, izici ze-rubber seal ziqinisa ukusebenza kokuvala kwe-valve, ukuze i-valve ikwazi ukufeza ukuvuza okungu-0.Ekukhetheni impahla yomzimba we-valve, ngokuvamile i-ductile iron iyona eyinhloko, ilandelwa yi-carbon steel nayo ingenzeka.Ukukhethwa kwendandatho yokuvala idiski ye-valve, i-EPDM, i-NBR, i-NR iyatholakala, ngokuya ngezidingo zekhasimende ukwenza ukukhetha.
Uma kuqhathaniswa nama-valve ovemvane ochungechunge lwe-EN558-13,14, i-valve uvemvane i-AWWA C504 inomzimba owugqinsi nogqinsi olubanzi lokuphotha okuphothayo, futhi kukhona futhi umehluko omncane kwezinye izilinganiso, ongabonakala kuthebula lobukhulu elilandelayo.Yebo, kulo msebenzi, awukho umehluko omkhulu namanye ama-butterfly valves avaliwe.
Yibaphi abakhiqizi abangenza i-AWWA C504 butterfly valve eChina?Ngokwazi kwami, abekho abakhiqizi abaningi abangakwazi ukwenza i-valve uvemvane i-AWWA C504, amafekthri amaningi anesipiliyoni esengeziwe ekukhiqizeni i-EN558-13/14 uchungechunge lwe-butterfly valve, futhi abanalo ulwazi oluningi ekukhiqizeni i-AWWA C504 butterfly valve, i-Tianjin Zhongfa. I-Valve ingomunye wabakhiqizi abangakwazi ukukhiqiza i-valve butterfly ye-AWWA C504, i-Zhongfa Valve inesikhunta sayo kanye neshabhu yayo yokucubungula, engaqeda ukukhiqizwa kwe-butterfly valve ngekhwalithi kanye nenani.
Okulandelayo ivalve uvemvane ye-AWWA C504 ekhiqizwe i-Tianjin Zhongfa Valve, Uma ufuna ukwazi okwengeziwe ngemikhiqizo ye-AWWA C504, ungaphinda usithinte.
