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300X slow closing check valve

300X slow closing check valve
  • sell:021-32051999
  • sell:021-32050777
  • fax:021-66099555

Details

  • Product Introduction
  • Service Promise
  • Ordering Process

The 300X slow-closing check valve consists of main valve, one-way valve, needle valve, ball valve, micro-filter and pressure gauge. Using hydraulic automatic operation, the main valve can get the best opening or closing speed. To prevent the water hammer from hitting, we can achieve the effect of slow closing and silencing.

This product uses hydraulic self-control, does not need other devices and energy, easy maintenance, open and slow shut smoothly.

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

When the valve feeds water from the inlet, the water enters the main valve control room through a micro filter, a needle valve and a one-way valve, and then drains downstream through a ball valve. Because the needle valve opening is less than the ball valve opening, that is, the main valve control room drainage speed is greater than the water intake speed, so the control room pressure reduces, acting on the lower end of the main valve disc inlet pressure open the main valve downstream water supply.

When the pipeline stops water supply, if the downstream water begins to flow back, part of the backflow water enters the main control room through the ball valve. Because of the unidirectional valve, the backflow water can not flow out of the main control room, causing the main control room to gradually pressurize, slowly closing the main valve.

Main technical parameters

公称压力(Mpa)
壳体试验压力(MPa)
密封试验压力(MPa)
适用介质
介质温度(℃)
1.0
1.5
1.1
0-80
1.6
2.4
1.76
2.5
3.75
2.75


主要零件材料


零件名称
零件材料
阀体 阀盖
WCB
阀座 阀盘
铜合金
密封圈 O型圈
丁腈橡胶
阀杆
2Cr13
弹簧
50CrVA
针型阀
铜合金
必赢国际437437线路
铜合金
浮必赢国际437437线路
铜合金
微型过滤器
不锈钢


部件列表
1、针阀2、主阀3、必赢国际437437线路4、压力表5、单向阀
主要外形连接尺寸


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
282
200
172
106
116
105
105
105
75
75
75
58
58
56
4-13.5
4-13.5
4-14
25
180
282
200
172
106
116
115
115
115
85
85
85
68
68
65
4-13.5
4-13.5
4-14
32
180
282
200
172
106
116
140
140
140
100
100
100
78
78
76
4-17.5
4-17.5
4-18
40
240
320
210
265
210
170
150
150
150
110
110
110
88
88
84
4-17.5
4-17.5
4-18
50
240
320
210
265
210
170
165
165
165
125
125
125
102
102
99
4-17.5
4-17.5
4-18
65
250
330
215
310
215
180
185
185
185
145
145
145
122
122
118
4-17.5
4-17.5
8-18
80
285
350
220
350
245
210
200
200
200
160
160
160
133
133
132
8-17.5
8-17.5
8-18
100
360
410
230
460
305
275
220
220
235
180
180
190
158
158
156
8-17.5
8-17.5
8-22
125
400
420
245
520
365
310
250
250
270
210
210
220
184
184
184
8-17.5
8-17.5
8-26
150
455
430
260
570
415
355
285
285
300
240
240
250
212
212
211
8-22
8-22
8-26
200
585
440
280
695
510
460
340
340
360
295
295
310
268
268
274
8-22
12-22
12-26
250
650
450
300
780
560
500
395
405
425
350
355
370
320
320
330
12-22
12-26
12-30
300
800
460
320
902
658
580
445
460
485
400
410
430
370
370
389
12-22
12-26
16-30
350
860
470
340
1025
696
640
505
520
555
460
470
490
430
430
448
16-22
16-26
16-33
400
960
480
360
1080
735
715
565
580
620
515
525
550
482
482
503
16-26
16-30
16-36
450
1075
530
395
1030
610
780
615
640
670
565
585
600
532
550
548
20-26
20-30
20-36
500
1075
580
420
1135
665
830
670
715
730
620
650
660
585
585
609
20-26
20-33
20-36
600
1230
600
445
1270
725
920
780
840
845
725
770
770
685
685
720
20-30
20-36
20-39
700
1650
730
495
1460
865
980
895
910
960
840
840
875
800
800
820
24-30
24-36
24-42
800
1750
830
530
1640
925
1050
1015
1025
1085
950
950
990
905
905
928
24-33
24-39
24-48


安装示意图

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.300X slow closing check 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!