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500X relief / hold valve

500X relief / hold valve
  • sell:021-32051999
  • sell:021-32050777
  • fax:021-66099555

Details

  • Product Introduction
  • Service Promise
  • Ordering Process

The 500X pressure relief/holding valve is mainly used in fire fighting or other water supply systems to prevent system overpressure or maintain pressure in fire fighting water supply systems. After the fire pump is closed, it can also reduce the impact of the water hammer. It is also used for water hammer devices in large water supply systems. And the valve control system is equipped with a clean filter at the entrance, the use of fluid characteristics, so that the proportion of larger, larger diameter suspended particles will not enter the control system to ensure smooth circulation of the system, so that the valve can operate safely and reliably. The system has stable movement, high strength and long service life.

Structural features and uses

The 500X relief/holding valve consists of a main valve, a relief/holding valve needle valve, a ball valve, a microfilter and a pressure gauge to form a hydraulic control nozzle system. Using hydraulic automatic operation, it can be used as pressure relief valve and can also be used as holding valve. When used as relief valve, the water supply pressure can be maintained below the set safety value; when used as pressure holding valve, the upstream water pressure of the main valve can be maintained above the set value, and the upstream water supply pressure of the main valve can be maintained.

This product uses hydraulic self-control, no need of other devices and energy, simple maintenance, and multi use of one valve.

This series of valve products are widely used in high-rise buildings, living areas and other water supply network systems and urban water supply projects.

Working principle

1. Pressure relief valve: When the pressure relief / pressure holding guide valve is adjusted to the pressure relief state, water flows through the needle valve, main valve control room, ball valve A, pressure relief / pressure holding guide valve, ball valve B to the outlet, at this time the main valve is in the open state. When the inlet pressure exceeds the safety value set by the pressure relief/pressure holding guide valve, the pressure relief guide valve will automatically open, and part of the water will be discharged through the ball valve C to make the pipeline pressure relief. When the pressure is restored to the safe value, the relief valve automatically closes. When the relief valve is used, the ball valves are always open.

2. Pressure-holding valve: When the relief/pressure-holding guide valve is adjusted to the pressure-holding state, as long as the inlet water pressure of the main valve is lower than the set value of the pilot valve, the pilot valve is closed. The main control room is boosted and the main valve is closed. When the upstream water supply pressure of the main valve exceeds the set pressure of the pilot valve, the pressure holding guide valve can be opened. The water in the control room is discharged through the ball valve to the outlet, and the pressure reducing main valve in the control room is opened to start the water supply, that is, the upstream water pressure is maintained. When holding the pressure valve, the ball valve C is usually closed or replaced with a plug.

Main technical parameters


公稱壓力(Mpa)
殼體試驗(yàn)壓力(MPa)
密封試驗(yàn)壓力(MPa)
適用介質(zhì)
介質(zhì)溫度(℃)
1.0
1.5
1.1
0-80
1.6
2.4
1.76
2.5
3.75
2.75


Material of main parts


零件名稱
零件材料
閥體 閥蓋
WCB
閥座 閥盤
銅合金
密封圈 O型圈
丁腈橡膠
閥桿
2Cr13
彈簧
50CrVA
針型閥
銅合金
球閥
銅合金
浮球閥
銅合金
微型過濾器
不銹鋼


Parts list:

1, pilot valve 2, needle valve 3, ball valve 4, main valve 5, pressure gauge.

Main shape connection dimensions


DN
L
A
A1
H
H1
F
D
mm
D1
mm
D2
mm
n-Φd
mm
mm
mm
mm
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
20
180
330
130
550
460
116
105
105
105
75
75
75
58
58
56
4-13.5
4-13.5
4-14
25
180
330
130
550
460
116
115
115
115
85
85
85
68
68
65
4-13.5
4-13.5
4-14
32
180
330
130
550
460
116
140
140
140
100
100
100
78
78
76
4-17.5
4-17.5
4-18
40
240
345
135
610
516
170
150
150
150
110
110
110
88
88
84
4-17.5
4-17.5
4-18
50
240
345
135
610
516
170
165
165
165
125
125
125
102
102
99
4-17.5
4-17.5
4-18
65
250
355
140
625
520
180
185
185
185
145
145
145
122
122
118
4-17.5
4-17.5
8-18
80
285
360
146
645
538
210
200
200
200
160
160
160
133
133
132
8-17.5
8-17.5
8-18
100
360
400
156
750
596
275
220
220
235
180
180
190
158
158
156
8-17.5
8-17.5
8-22
125
400
420
170
808
655
310
250
250
270
210
210
220
184
184
184
8-17.5
8-17.5
8-26
150
455
435
186
864
710
355
285
285
300
240
240
250
212
212
211
8-22
8-22
8-26
200
585
480
206
1135
805
460
340
340
360
295
295
310
268
268
274
8-22
12-22
12-26
250
650
530
226
1185
855
500
395
405
425
350
355
370
320
320
330
12-22
12-26
12-30
300
800
575
246
1325
955
580
445
460
485
400
410
430
370
370
389
12-22
12-26
16-30
350
860
620
275
1385
990
640
505
520
555
460
470
490
430
430
448
16-22
16-26
16-33
400
960
635
286
1445
1030
715
565
580
620
515
525
550
482
482
503
16-26
16-30
16-36
450
1075
665
320
1325
905
780
615
640
670
565
585
600
532
550
548
20-26
20-30
20-36
500
1075
695
348
1430
960
830
670
715
730
620
650
660
585
585
609
20-26
20-33
20-36
600
1230
720
372
1565
1020
920
780
840
845
725
770
770
685
685
720
20-30
20-36
20-39
700
1650
770
422
1755
1160
980
895
910
960
840
840
875
800
800
820
24-30
24-36
24-42
800
1750
805
458
2230
1515
1050
1015
1025
1085
950
950
990
905
905
928
24-33
24-39
24-48


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.500X relief / hold 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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