Izinga le-AWWA yi-American Water Works Association elanyathelisa okokuqala imibhalo yokuvumelana ngo-1908. Namuhla, kunezindinganiso ze-AWWA ezingaphezu kuka-190. Kusukela emthonjeni kuya endaweni yokugcina, kusukela ekuhlanzweni kuya ekusakazweni, amazinga e-AWWA amboza imikhiqizo nezinqubo ezihlobene nazo zonke izindawo zokwelashwa nokuhlinzekwa kwamanzi. I-AWWA C504 iwuhlobo olujwayelekile lwevalvu ye-butterfly esihlalweni semfucumfucu.
I-valve ye-butterfly ye-AWWA C504 inezinhlobo ezimbili, uphawu oluthambile lomugqa ophakathi kanye nophawu oluthambile oluphindwe kabili, ngokuvamile, intengo yophawu oluthambile lomugqa ophakathi izoba eshibhile kune-double eccentric, vele, lokhu ngokuvamile kwenziwa ngokwezidingo zamakhasimende. Ngokuvamile ingcindezi yokusebenza ye-AWWA C504 ingu-125psi, 150psi, 250psi, izinga lokucindezela kokuxhumeka kwe-flange yi-CL125,CL150,CL250.
I-valve ye-butterfly ye-AWWA C504 isetshenziswa kakhulu kumaphrojekthi okwelapha amanzi, indawo edingekayo amanzi angenazo izinto ezingcolile, izici zesivalo senjoloba ziqinisa ukusebenza kokuvala kwevalve, ukuze ivalve ikwazi ukufeza ukuvuza okungu-0. Ekukhetheni izinto zomzimba wevalve, imvamisa insimbi ethambile iyona eyinhloko, kulandelwe yinsimbi yekhabhoni nayo ingenzeka. Ukukhetha indandatho yokuvala idiski yevalve, i-EPDM, i-NBR, i-NR kuyatholakala, ngokuya ngezidingo zekhasimende ukuze likhethe.
Uma kuqhathaniswa nama-valve e-butterfly ochungechunge lwe-EN558-13,14, i-valve ye-butterfly ye-AWWA C504 inomzimba obanzi kanye ne-spindle enobubanzi obukhulu, futhi kukhona nomehluko omncane kwezinye izilinganiso, ongabonakala kuthebula lobukhulu elilandelayo. Vele, ngomsebenzi, akukho mehluko omkhulu ngamanye ama-valve e-butterfly avaliwe ngerabha.
Yimaphi abakhiqizi abangenza i-AWWA C504 butterfly valve eShayina? Ngokwazi kwami, ababaningi abakhiqizi abangenza i-AWWA C504 butterfly valve, amafektri amaningi anolwazi oluthe xaxa ekukhiqizeni i-EN558-13/14 series butterfly valve, futhi awanalo ulwazi oluningi ekukhiqizeni i-AWWA C504 butterfly valve, iTianjin Zhongfa Valve ingenye yabakhiqizi abangakhiqiza i-AWWA C504 butterfly valve, iZhongfa Valve inesikhunta sayo kanye nendawo yayo yokucubungula, engaqeda ukukhiqizwa kwe-butterfly valve ngekhwalithi nangobuningi.
Okulandelayo yivalvu yebhabhathane ye-AWWA C504 ekhiqizwe yiTianjin Zhongfa Valve, Uma ufuna ukwazi kabanzi ngemikhiqizo ye-AWWA C504, ungaxhumana nathi.
