AWWA/ANSI250PsiRisingStemResilientSeatedGateValve设计标准Design:AWWAC515/C509结构长FacetoFace:ANSIB16.10法兰标准Flanges:A***EB16.42阀体Body:球铁ASTMA53665-45-12;闸板Wedge:球铁DL+EPDM/NBR阀杆Stem:AISI420/2CR13;环氧树脂喷涂Productcolor:BlueRAL5017)