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Shanghai Hengxing Pump and Valve Manufacturing Co., Ltd
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HH47X slow closing check valve
HH47X slow closing check valve .....
Product details

HH47X slow closing check valve

Overview:

It is mainly used in the supply and drainage pipelines of clean water, source water, sewage, seawater and other media. It is installed at the outlet of the water pump to cut off the backflow of the medium and eliminate the destructive water hammer caused by atomic energy, protecting the safe operation of the water pump and the pipeline. Its main features are: 1. Small size, light weight, and a structural length only about one-third of that of a rotary check valve. 2. The slow closing system has excellent performance and is not affected by the medium in the pipeline. The valve disc closes quickly first and then slowly, which can prevent destructive water hammer. 3. Rubber soft seal, good sealing performance, wear-resistant, and long service life. 4. Rubber buffer, smooth opening and closing, no vibration, no noise. 5. Compared to traditional check valves, it has lower flow resistance and significant energy-saving effects.


Performance specifications:
Model number
HH47X-10 HH48X-10 HH49X-10
HH47X-16 HH48X-16 HH49X-16
Nominal Pressure
PN1.0MPa
PN1.6MPa
Nominal Diameter
DN50~800mm
DN50~800mm
Sealing test pressure
1.1MPa
1.76MPa
Shell test pressure
1.5MPa
2.4MPa
Main component materials
Valve body
Grey cast iron or ductile iron
Grey cast iron or ductile iron
Valve disc
aluminum bronze
aluminum bronze
Valve stem
stainless steel
stainless steel
Spring
stainless steel
stainless steel
Valve seat sealing surface
rubber
rubber

Main external dimensions:
Nominal diameter DN
Dimensions (mm)
mm
in
D
D1
D2
H
H1
L
Z-fd
bolt
150
6
280
240
210
228
172
210
8-f23
8-M20
200
8
335
295
265
270
210
230
8-f23
8-M20
250
10
390
350
320
305
240
250
12-f23
12-M20
300
12
440
400
368
367
264
270
12-f23
12-M20
350
14
500
460
428
422
294
290
16-f23
16-M20
400
16
565
515
482
462
324
310
16-f23
16-M22
450
18
615
565
532
497
351
330
20-f25
20-M22
500
20
670
620
585
532
379
350
20-f25
20-M22
600
24
780
725
685
607
434
390
20-f30
20-M27
700
28
895
840
800
702
491
430
24-f30
24-M27
800
32
1010
950
905
792
549
470
24-f34
24-M30

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