H42Y、H42W调节立式止回阀正常的处在关闭状态,鉴于管道中入口端介质的压力功效,而摆脱扭簧摩擦阻力使闸阀打开。当进口的端物质工作压力小于出入口端时,扭簧将阀心引向高压闸阀进而闸阀关掉,阻拦物质倒流,故起始回功效
关键尺寸
公称直径 PN | DN | D0 | D | DI | Md | Z-D | H | b | 净重 (㎏) | ||||
16.0MPa | 15 | 95 | 60 | M24×2 | 3-18 | 240 | 20 | 5.5 | |||||
25 | 23 | 105 | 68 | M33×2 | 262 | 7.5 | |||||||
32 | 29 | 115 | 80 | M42×2 | 4-18 | 285 | 22 | 10 | |||||
40 | 39 | 165 | M52×2 | 6-26 | 28 | 19.5 | |||||||
32.0MPa | 11 | 234 | |||||||||||
15 | 17 | 6 | 8.5 | 135 | M48×2 | 4-22 | 25 | 12 | 42 | M64×2 | 316 | 32 | 21 |