avk双法兰蝶阀介绍:
avk双法兰蝶阀,中线型活动内衬,pn 10/16
epdm橡胶内衬,aisi420阀杆,aisi304碟板,no sealing box mounted
型号: 813/83-001 - 中线蝶阀,符合en 593,短系列13,球墨铸铁,双法兰,不锈钢碟板 .
concentric butterfly valve, double flanged, loose liner. face to face dimensions: en 558-2, series 13 (din 3202 f16). design to en 593, drilling to en 1092. body: ggg-40
top flange: iso 5211
disc:aisi 304
bush:bronze
coating: electrostatically applied epoxy
resin - internally【敏感词】externally
avk butterfly valves, series 813 are of the concentric type with the shaft placed in both centerlines,【敏感词】the valve closing a few degrees before 0. equal areas of the disc are thus working with【敏感词】against the flow,【敏感词】the flow will not influence the opening【敏感词】closing torque.