Umgangatho we-AWWA yi-American Water Works Association eyapapasha amaxwebhu esivumelwano okokuqala ngo-1908. Namhlanje, kukho iMigangatho ye-AWWA engaphezu kwe-190. Ukususela kumthombo ukuya kwindawo yokugcina, ukusuka ekucocweni ukuya ekusasazweni, iMigangatho ye-AWWA igubungela iimveliso kunye neenkqubo ezinxulumene nazo zonke iindawo zokunyanga nokubonelela ngamanzi. I-AWWA C504 yeyohlobo oluqhelekileyo, luhlobo lwevalvu yebhabhathane ehlala phantsi kwenkunkuma.
Ivalvu yebhabhathane ye-AWWA C504 ineefom ezimbini, i-midline line soft seal kunye ne-double eccentric soft seal, ngokwesiqhelo, ixabiso le-midline soft seal liya kuba lixabiso eliphantsi kune-double eccentric, ewe, oku kwenziwa ngokweemfuno zabathengi. Ngokwesiqhelo uxinzelelo olusebenzayo lwe-AWWA C504 yi-125psi, 150psi, 250psi, izinga loxinzelelo loqhagamshelo lweflange yi-CL125, CL150, CL250.
Ivalvu yebhabhathane ye-AWWA C504 isetyenziswa kakhulu kwiiprojekthi zokunyanga amanzi, indlela efunekayo ngamanzi angenangcoliseko, iimpawu zetywina yerabha ziqinisa ukusebenza kokutywina kwevalvu, ukuze ivalvu ifikelele ekuvuzeni okungama-0. Ekukhetheni izinto zomzimba wevalvu, intsimbi ethambileyo idla ngokuba yeyona iphambili, ilandelwe yintsimbi yekhabhoni nayo inokwenzeka. Ukukhetha iringi yokutywina idiski yevalvu, i-EPDM, i-NBR, i-NR ziyafumaneka, ngokweemfuno zomthengi ukuze enze ukhetho.
Xa kuthelekiswa neevalvu zebhabhathane ze-EN558-13,14 series, ivalvu yebhabhathane ye-AWWA C504 inomzimba otyebileyo kunye ne-spindle enobubanzi obukhulu, kwaye kukwakho nomahluko omncinci kwezinye iimilinganiselo, onokubonwa kwitheyibhile yobukhulu elandelayo. Kakade ke, ngomsebenzi, akukho mahluko mkhulu ngezinye iivalvu zebhabhathane ezitywinwe ngerabha.
Ngoobani abavelisi abanokwenza i-AWWA C504 butterfly valve eTshayina? Ngokwazi kwam, ababaninzi abavelisi abanokwenza i-AWWA C504 butterfly valve, iifektri ezininzi zinamava amaninzi kwimveliso ye-EN558-13/14 series butterfly valve, kwaye azinawo amava amaninzi kwimveliso ye-AWWA C504 butterfly valve, iTianjin Zhongfa Valve ngomnye wabavelisi abanokuvelisa i-AWWA C504 butterfly valve, iZhongfa Valve ine-mold yayo kunye ne-workshop yayo yokucubungula, enokugqiba imveliso ye-butterfly valve ngomgangatho nobungakanani.
Okulandelayo yivalvu yebhabhathane ye-AWWA C504 eyenziwe yiTianjin Zhongfa Valve, Ukuba ufuna ukwazi okungakumbi malunga neemveliso ze-AWWA C504, ungaqhagamshelana nathi.
