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900X-10C,900X-25C,900X-40C,900X-10P,900X-25P,900X-40P,紧急关闭阀
900X紧急关闭阀产品简介
900X紧急关闭阀，是一种用于消防用水与生活用水并联的供水系统中，用来调配水方向的阀门，当火灾发生时，消防急需大量用水，900X紧急关闭阀立即切断生活用水，确保主够的消防用水，当消防停止用水，压力减小时，阀门自动打开，呈现常开状态，恢复生活供水。该阀使系统无需另设专门的消防单独供水管网，大大节约了建设成本和用水量。阀门控制灵敏度高，安全可靠，调试简便，使用寿命长。
900X紧急关闭阀工作原理
当主阀出口压力低于导阀设定的压力时，导阀此时处于开通状态，主阀上腔压力与主阀出口压力相等，进口与吃口存在压差，水流经阀口出口流出，当消防泵气泵时，或变平泵压力升高时，超过导阀设定压力，由主阀进口向导阀管控制室压力升高，作用在弹簧压力增大，向下压紧，带动阀芯下移，使导阀关闭，此时主阀进口压力通过节流阀补充到主阀阀盖上腔，因阀瓣受到向下压力大于向上推力，主阀关闭
值得注意的是，进口压力小于设定压力是，主阀处于开启状态，进口压力大于设定压力，阀瓣关闭。
900X紧急关闭阀技术参数
|
公称压力M
p
a
|
壳体实验压力M
p
a
|
密封实验压力M
p
a
|
适用介质
|
适用温度
|
|
1.0
|
1.5
|
1.1
|
水
|
0~80℃
|
|
1.6
|
2.4
|
1.76
|
||
|
2.5
|
3.75
|
2.75
|
900X
紧急关闭阀主要零件
|
零件名称
|
材质
|
|
阀体，阀盖
|
铸铁，铸钢，球墨铸铁
|
|
阀座
|
青铜，不锈钢
|
|
阀瓣
|
碳钢，不锈钢，丁晴橡胶
|
|
阀杆
|
青铜，不锈钢
|
|
膜片压板
|
铸钢，不休钢
|
|
弹簧
|
不锈钢
|
900X
紧急关闭阀连接尺寸
|
DN
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
250
|
300
|
350
|
|
L
|
150
|
160
|
180
|
200
|
210
|
245
|
265
|
290
|
330
|
355
|
505
|
555
|
610
|
650
|
|
H1
|
247
|
247
|
247
|
278
|
278
|
298
|
313
|
350
|
365
|
420
|
450
|
470
|
490
|
526
|
|
H2
|
342
|
342
|
342
|
395
|
395
|
405
|
430
|
510
|
560
|
585
|
675
|
730
|
760
|
840
|
900X-10C-DN50,900X-25C-DN125,900X-40P-DN125,900X-16C-DN125,900X-10C-DN300,
900X-10C-DN150,900X-10C-DN200,900X-10C-DN250,900X-10C-DN80,900X-10C-DN100,
900X-25C-DN20,900X-25C-DN25,900X-25C-DN32,900X-25C-DN40,900X-25C-DN350
900X-25C-DN50,900X-25C-DN65,900X-25C-DN80,900X-25C-DN100,900X-10C-DN125,
900X-25C-DN150,900X-25C-DN200,900X-25C-DN300,900X-10C-DN65,900X-25C-DN250,
900X-40C-DN20,900X-40C-DN25,900X-40C-DN32,900X-40C-DN40,900X-40C-DN350
900X-40C-DN50,900X-40C-DN65,CCLAIR,900X-40C-DN80,900X-40C-DN100,900X-40C-DN125,
900X-40C-DN150,900X-40C-DN200,900X-40C-DN250,900X-40C-DN300,
900X-16C-DN20,900X-16C-DN25,900X-16C-DN32,900X-16C-DN40,900X-16C-DN350
900X-16C-DN50,900X-16C-DN65,900X-16C-DN80,900X-16C-DN100,
900X-16C-DN150,900X-16C-DN200,900X-16C-DN250,900X-16C-DN300,
900X-10P-DN20,900X-10P-DN25,900X-10P-DN32,900X-10P-DN40,900X-10P-DN350
900X-10P-DN50,900X-25P-DN125,900X-16P-DN125,900X-10P-DN300,
900X-10P-DN150,900X-10P-DN200,900X-10P-DN250,900X-10P-DN80,900X-10P-DN100,
900X-25P-DN20,900X-25P-DN25,900X-25P-DN32,900X-25P-DN40,900X-25P-DN350
900X-25P-DN50,900X-25P-DN65,900X-25P-DN80,900X-25P-DN100,900X-10P-DN125,
900X-25P-DN150,900X-25P-DN200,900X-25P-DN300,900X-10P-DN65,900X-25P-DN250,
900X-40P-DN20,900X-40P-DN25,900X-40P-DN32,900X-40P-DN40,900X-40P-DN350
900X-40P-DN50,900X-40P-DN65,900X-40P-DN80,900X-40P-DN100,
900X-40P-DN150,900X-40P-DN200,CCLAIR,900X-40P-DN250,900X-40P-DN300,
900X-16P-DN20,900X-16P-DN25,900X-16P-DN32,900X-16P-DN40,900X-16P-DN350,
900X-16P-DN50,900X-16P-DN65,900X-16P-DN80,900X-16P-DN100,
900X-16P-DN150,900X-16P-DN200,900X-16P-DN250,900X-16P-DN300,
