Used at the pump outlet to carry out an accurate open or close via the pilot control of the solenoid valve and。as a check control valve,to prevent the medium from back-flow.When the pump is about to stop water supply,it is slowly closed by about 90% first to prevent both water hammer and water shock noise from being produced due to sudden stop of the pump and.when the pump stops compley.it is fully closed t0 prevent the water from back flow with the pump so as to effectively protect it from counter movement due to the shock of the back-flow This valve can effectively prevent water hammer and wa-ter shock noise.be reliably sealed and long time used and stably move The solenoid valve can use either AC220V or DC24V power.
四、主要外形及連接尺寸 Schematic diagram of installation
公稱通徑 DN(mm)
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
L
180
180
180
203
203
216
241
292
330
356
495
622
698
787
914
978
978
1295
1446
1956
PN10
D
105
115
135
145
160
180
195
215
245
280
335
390
440
500
565
615
670
780
895
1010
D1
75
85
100
110
125
145
160
180
210
240
295
350
400
460
515
565
620
725
840
950
PN16
D
105
115
135
145
160
180
195
215
245
280
335
405
460
520
580
640
705
840
910
1020
D1
75
85
100
110
125
145
160
180
210
240
295
355
410
470
525
585
650
770
840
950
PN25
D
105
110
135
145
160
180
195
230
270
300
360
425
485
550
610
660
730
840
955
1070
D1
75
85
100
110
125
145
160
190
220
250
310
370
430
490
550
600
660
770
875
990
H
342
342
342
395
395
405
430
510
560
585
675
730
760
840
910
1030
1135
1270
1460
1640
H1
247
247
247
278
278
298
313
350
365
420
450
470
490
526
570
610
665
725
865
975
注:安裝示意圖中彈性座封閘閥或蝶閥任選,建議≥ DN350選蝶閥。
Note : Either elastic seat ring sealed gate valve or butterfly valve can be selected in the schematic diagram of installation Recomended to select the butterfly valve in case of ≥ DN350