西门子电动二通调节阀VVI41..两通阀内螺纹连接，PN16，行程20mm青岛兰吉尔自控系统有限公司李慧：17685528239***：2124409272西门子电动二通调节阀VVI41...两通-适用于开式系统和闭式系统中冷冻水、低压热水、饱和蒸汽的控制材质：青铜阀芯：黄铜公称：PN16连接：内螺纹低温：-25°C高温：140°C阀杆行程：20mm西门子电动二通调节阀VVI41..两通阀型号概览：(VVI41...)公称直径mmKvs流量系数[m3/h]SQXSKD型号[两通阀]△Pmax△Ps△Pmax△PsVVI41.15-2.5VVI41.15-4152.54.040016004001600VVI41.20-6.3206.340016004001600VVI41.25-10251040015504001600VVI41.32-1632164008754001275VVI41.40-254025400525400775VVI41.50-405040300300400450△Pmax阀门***大允许压差；△Ps阀门关闭压差)