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这是描述信息

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Add:Room 4075, 518 Yucai North Road, Beigan street, Xiaoshan District, Hangzhou City, Zhejiang Province
Tel:+86-15695881327
Web:www.zjzdvalve.com

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Product description
Parameters
一、Hydraulic Control Valve JD745X
 
■ Main Overall Dimensions:          ■ Product Structure:
DN (mm): DN150-DN1600 Pressure PN (Mpa): 0.6-6.4
 
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■ Product Description:
The valve is installed at the outlet end of water pump to achieve slow opening, full opening, quick closing and slow closing in order. The product is applicable to water pump outlet pipelines of water supply systems for high-rises or others, which can prevent or weaken water hammer of pipeline when the pump is opened or closed, prevent backflow, and maintain safety of pipelines.
The product comprises a main valve, a regulating valve and a connector system, wherein the valve body is straight-flow, the control room of the main valve is of a diaphragm or piston double-room structure, there is one more room than an ordinary hydraulic control valve to control functions over the main valve and achieve slow opening, full opening, slow closing and stop for the outlet. In this way, the product will carry out multiple functions to outlet by one valve and one-time regulation.
 
二、 Structural Features of JD745X Multifunctional Water Pump Control Valve
 
The product comprises a main valve, a regulating valve and a connector system, wherein the valve body is straight-flow, the control room of the main valve is of a diaphragm or piston double-room structure, there is one more room than an ordinary hydraulic control valve to control functions over the main valve and achieve slow opening, full opening, slow closing and stop for the outlet. In this way, the product will carry out multiple functions to outlet by one valve and one-time regulation.
The connector system is controlled by the regulating valve and gets all required control parameters such as opening speed and slow closing speed of main valve by setting the openness of the regulating valve.
 
II. Working Features  
1. With integrated technology of water hammer prevention by slow opening, stop and quick closing and slow closing, the product can well prevent water hammer, no hammer in start or backflow in stop from damaging water supply pipelines and water pump.
 
2. The operation is convenient, there is no need of an extra power control system, the valve will finish the control functions in order automatically along with the start and stop of water pump, and appropriate control parameters will be attainable according to the set openness of regulating valve.
 
3. The valve is designed in all channel, straight flow and streamline, having small hydraulic loss and good energy conservation.
 
III. Functions and Applications
 
The valve is installed at the outlet end of water pump to achieve slow opening, full opening, quick closing and slow closing in order.
The product is applicable to water pump outlet pipelines of water supply systems for high-rises or others, which can prevent or weaken water hammer of pipeline when the pump is opened or closed, prevent backflow, and maintain safety of pipelines.  
 
IV. Main Parts Material
 
Parts Name

Parts Material

Valve Body, Valve Deck

WCB

Valve Base, Valve Disk

Copper Alloy/2Cr13

Sealing Ring, O-ring

Nitrile Butadiene Rubber, NBR

Valve Rod

2Cr13

Spring

50CrVA

Cylinder Liner, Piston (Piston Type)

2Cr13

Diaphragm (Diaphragm Type)

Fabric-sandwiched NBR

Regulating Valve Ball Valve

Copper Alloy

Filter

Stainless Steel

V.Main Technical Parameters


Nominal Pressure (MPa)

Shell Test Pressure (MPa)

Seal Test Pressure (MPa)

Pressure Regulating Range (MPa)

Slow Closing Time (S)

Minimum Operating Pressure (MPa)

Applicable Medium

Medium Temperature (°C)

1.0

1.5

1.1

0.09-0.8

3-60
(Adjustable )

≥0.07

Water

0-80

1.6

2.4

1.76

0.15-1.4

2.5

3.75

2.75

0.2-2.0

VI. Connection Dimensions

DN
L

 

mm
H

 

mm
D
mm
D1
mm
b
mm
D2
mm
n-Φd
 
 
PN

 

1.0
PN

 

1.6
PN

 

2.5
PN

 

1.0
PN

 

1.6
PN

 

2.5
PN

 

1.0
PN

 

1.6
PN

 

2.5
PN

 

1.0
PN

 

1.6
PN

 

2.5
PN

 

1.0
PN

 

1.6
PN

 

2.5
40
240
270
150
150
150
110
110
110
18
18
18
88
88
84
4-17.5
4-17.5
4-18
50
240
270
165
165
165
125
125
125
20
20
20
102
102
99
4-17.5
4-17.5
4-18
65
270
340
185
185
185
145
145
145
20
20
22
122
122
118
4-17.5
4-17.5
8-18
80
300
400
200
200
200
160
160
160
22
22
24
133
133
132
8-17.5
8-17.5
8-18
100
350
440
220
220
235
180
180
190
24
24
24
158
158
156
8-17.5
8-17.5
8-22
125
400
460
250
250
270
210
210
220
26
26
26
184
184
184
8-17.5
8-17.5
8-26
150
480
500
285
285
300
240
240
250
26
26
28
212
212
211
8-22
8-22
8-26
200
500
640
340
340
360
295
295
310
28
30
30
268
268
274
8-22
12-22
12-26
250
605
690
395
405
425
350
355
370
28
32
32
320
320
330
12-22
12-26
12-30
300
700
820
445
460
485
400
410
430
28
32
34
370
370
389
12-22
12-26
16-30
350
800
950
505
520
555
460
470
490
30
36
38
430
430
448
16-22
16-26
16-33
400
900
1400
565
580
620
515
525
550
32
38
40
482
482
503
16-26
16-30
16-36
450
1000
1580
615
640
670
565
585
600
32
40
42
532
550
548
20-26
20-30
20-36
500
1100
1600
670
715
730
620
650
660
34
42
44
585
585
609
20-26
20-33
20-36
600
1300
1815
780
840
845
725
770
770
36
48
46
685
685
720
20-30
20-36
20-39
700
1400
2040
895
910
960
840
840
845
40
54
50
800
800
820
24-30
24-36
24-42
800
1500
2350
1015
1025
1085
950
950
990
44
58
54
905
905
925
24-33
24-39
24-48
900
1700
2606
1115
1125
1185
1050
1050
1090
46
62
58
1005
1005
1028
28-33
28-39
28-48
1000
1900
2765
1230
1255
1320
1160
1170
1210
50
66
62
1110
1110
1140
28-36
28-42
28-56
1200
2050
2950
1455
1485
1530
1380
1390
1420
56
52
70
1330
1328
1350
32-39
32-48
32-55
1400
2200
3180
1675
1685
1755
1590
1590
1640
62
58
76
1530
1530
1560
36-42
36-48
36-60
1600
2400
3400
1915
1930
1955
1820
1820
1860
68
64
84
1750
1750
1780
40-48
40-55
40-60
 

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