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JD745X multifunctional pump control valve

JD745X multifunctional pump control valve
  • sell:021-32051999
  • sell:021-32050777
  • fax:021-66099555

Details

  • Product Introduction
  • Service Promise
  • Ordering Process

JD745X multi-function pump control valve is composed of main valve, regulating valve and nozzle system. The valve body adopts direct-flow valve body. The main valve control chamber is a diaphragm or piston type double control chamber structure. The control chamber is one more than the general hydraulic control valve. The control function of the main valve is increased, and the slow opening of the pump outlet is realized. Full open, slow close, cut-off and other multi-functional control, to achieve a valve, one-time regulation of the pump outlet multi-functional control.

The nozzle system of this product is controlled by a regulating valve. By setting the opening of the regulating valve, the required control parameters, such as the opening speed of the main valve, the slow closing speed and so on, can be easily realized.

Working principle

When the pump starts, the water pressure acts on the lower chamber of the main valve disc and the control chamber. This pressure opens the main valve. The water in the upper chamber of the control chamber is slowly discharged to the outlet through the control valve B, and the main valve opens slowly. Setting the opening of the regulating valve can get the opening speed of the suitable main valve. When the pump stops working, the inlet water pressure drops rapidly and closes most of the opening quickly under the self-weight and spring pressure, which prevents the remaining opening from slowly closing under the combined action of the water pressure in the upper chamber and the water pressure in the lower chamber.

Setting the opening and opening ratio of the regulating valve A and B can get the proper valve opening and closing speed.

Work characteristics

1. Prevent the water hammer effect is good, will slow open, check the speed of closure, slow shut and other elimination of water hammer technology integration, to prevent the pump does not start hammer and stop the pump backflow and water hammer on the water supply pipeline and pump damage.

2. Easy operation, no need to distribute another control system for the valve, the valve with the pump to open and stop automatically and in order to complete the control function. Proper control parameters can be obtained by setting control valve opening.

3, the valve body uses a full channel, DC, streamlined design. The hydraulic loss is small and the energy saving effect is good.

Functions and uses

The valve is installed at the outlet end of the pump, and the functions of slow opening, full opening, quick closing and slow closing are realized sequentially.

This product is used in high-rise building water supply system and other water supply system pump outlet pipeline to prevent and weaken the water hammer water hammer when the pump is opened and closed, prevent water backflow to protect the pump, maintain pipeline safety.

Main technical parameters


公稱壓力(Mpa)
殼體試驗(yàn)壓力(MPa)
密封試驗(yàn)壓力(MPa)
調(diào)壓范圍(MPa)
緩閉時(shí)間(S)
動(dòng)作壓力(MPa)
適用介質(zhì)
介質(zhì)溫度(℃)
1.0
1.5
1.1
0.09-0.8
3-60
(可調(diào))
≥0.07
0-80
1.6
2.4
1.76
0.15-1.4
2.5
3.75
2.75
0.2-2.0


Material of main parts


零件名稱
零件材料
閥體 閥蓋
WCB
閥座 閥盤
銅合金/2Cr13
密封圈 O型圈
丁腈橡膠
閥桿
2Cr13
彈簧
50CrVA
缸套 活塞(活塞型)
2Cr13
膜片(膜片型)
夾織物丁腈橡膠
調(diào)節(jié)閥 球閥
銅合金
過(guò)濾器
不銹鋼


Parts list:

1, main valve 2, flow control valve 3, filter.

Main shape connection dimensions


DN
L
H
D
mm
D1
mm
b
mm
D2
mm
n-Φd
mm
mm
PN1.0
PN1.6
PN2.5
PN1.0
PN1.6
PN2.5
PN1.0
PN1.6
PN2.5
PN1.0
PN1.6
PN2.5
PN1.0
PN1.6
PN2.5
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


安裝示意圖

The best quality, first-class service Qigao creates more value for you!

"Qigao Valve" expects to continuously improve service quality and strive for excellence. "Sincere service" is the eternal theme of "Qigao". "Qigao" strictly followsIS09001-2000 Quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. Strengthen communication with users and provide quality products to our customers with perfection and perfect service. Hereby our factory makes the following commitments:

Product Standards:

Products in strict accordance with ChinaGB、HG Standard and USAPISuch as standard design, manufacturing, acceptance. The hardness of the sealing surface meets the requirements of the state and the width exceeds the national standard.

pre-sale service:

Product introduction, technical exchange, non-standard product design, troubleshooting。

Sale service:

A trustworthy contract guarantees timely delivery and keeps in touch with customers. For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.

After sales service:

1、"Qigao" brand product quality period is from the factory12In the month, the implementation of the "three guarantees" service (return, replacement, warranty).

2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions, so as to further improve product quality.

3、Respond quickly to the quality of user complaints, after-sales service personnel rushed to the scene in 24-36 hours (48 hours outside the province).

4、For after-sales service, users are required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of Qigao.

1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:

a、Structure length;

b、Connection Type;

c、Nominal diameter, full diameter, reduced diameter, pipe size;

d、Operating medium and temperature, pressure range;

e、Tests, inspection standards and other requirements

2、The factory can configure various types of driving devices according to customer's specific requirements.。

3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.

4、For futures and order customers, please call us in advance to tell the required valve model, specification, quantity, delivery time and location, and timely transfer to the factory account according to the total 30% deposit or full payment. The rest of the payment is pending. Import before shipment to arrange delivery in time.

 

Order Process:

1、Customer purchase list fax to021-33872143,Or call us 021-33872141

2、Receive customer purchase list, provide valve model selection and quotation (price list)。

3、Specific agreement: delivery date, special requirements, etc.。

download Google:

1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:

a、Structure length;

b、Connection Type;

c、Nominal diameter, full diameter, reduced diameter, pipe size;

d、Operating medium and temperature, pressure range;

e、Tests, inspection standards and other requirements

2、The factory can configure various types of driving devices according to customer's specific requirements.。

3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.

4、For futures and order customers, please call us first to tell the required valve model, specifications, quantity, delivery time and location, and press the total30%The deposit or full payment will be remitted to our factory account in time., The rest of the payment will be remitted before shipment to arrange delivery in time.。

Sale service:

Trustworthy contract, guarantee timely delivery, keep in touch with customers at any time。

For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.

After sales service:

1、"Qigao" product quality period is from the factory12Month, practiceThree packsService (return, replacement, warranty)。

2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions.,
In order to further improve product quality。

3、Respond quickly to the quality of user complaints, after-sales service personnel24-36Hours (outside the province48Hour) rushed to the scene。

4、For after-sales service, the user is required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of “Qigao”.。

statement

  1. All text, data and pictures in this article are for reference only.JD745X multifunctional pump control valvePlease contact us at 4000-700-665 for details of performance, size and price.
  2. If there is no explanation, this article is original, reprint, please indicate the address of this article, thank you for your cooperation!
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