First, the product [micro resistance slow closing check valve] details:
Product Name: micro resistance slow closing check valve
Product features: the factory production of H47X, H4 7H, HH47X, HH47H, H47Xf, HDH47X type butterfly check valve is mainly used for punching a buried water supply, sewage treatment plant water pump outlet pipe to prevent medium countercurrent. Automatically eliminate destructive water hammer so as to ensure the pump and pipeline are not damaged. The valve is mainly composed of valve body, valve flap, buffer device and micro regulating valve. The product has the advantages of novel structure, small size, small fluid resistance, stable running, reliable and reliable, abrasion resistance, good buffering performance, etc., and is the best product of industrial water and urban sewage.
Micro resistance slow closing check valve main dimensions (flange connection size: PNl0, 16, 25 by JB / T79 94 standard)
|
Nominal diameter
DN(mm)
|
Size(mm)
|
|
L
|
H
|
B1
|
B2
|
|
200
|
230
|
550
|
540
|
600
|
|
250
|
250
|
630
|
600
|
700
|
|
300
|
270
|
690
|
650
|
740
|
|
350
|
290
|
780
|
710
|
800
|
|
400
|
310
|
860
|
770
|
870
|
|
450
|
330
|
910
|
830
|
920
|
|
500
|
350
|
980
|
900
|
1000
|
|
Nominal diameter
DN(mm)
|
Size(mm)
|
|
L
|
H
|
B1
|
B2
|
|
600
|
390
|
1070
|
1090
|
1250
|
|
700
|
430
|
1220
|
1200
|
1360
|
|
800
|
470
|
1320
|
1320
|
1480
|
|
900
|
510
|
1430
|
1420
|
1580
|
|
1000
|
550
|
1550
|
1550
|
1700
|
|
1200
|
630
|
1800
|
1780
|
1950
|
|
1400
|
710
|
1980
|
2000
|
2175
|
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