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Duplex spring safety valve

Duplex spring safety valve
  • sell:021-32051999
  • sell:021-32050777
  • fax:021-66099555

Details

  • Product Introduction
  • Service Promise
  • Ordering Process

The double spring type safety valve is suitable for the equipment and pipeline of steam, water and other media with working temperature < 350 C. As an overpressure protection device.


The materials of A38Y, A43H and A37H double spring relief valves are the same as those of A47H and A48Y spring relief valves except three-way (WCB).


Type A38Y, A43H, and A37H double safety valves are constructed by installing two A48Y or A47H safety valves of the same specification on the Y-joint. The nominal diameter series refers to the inlet diameter of the Y-joint. The combination of these two safety valves is as follows:

A38Y雙聯(lián)型
相應(yīng)的A48Y型
50
32×2
80
50×2
100
65×2
150
100×2
A43Y雙聯(lián)型
相應(yīng)的A47Y型
50
32×2
80
50×2
100
80×2
125
100×2
150
125×2
A37Y雙聯(lián)型
相應(yīng)的A47Y型
50
32×2
80
65×2
100
80×2
125
100×2
150
125×2

Main dimensions


型號
公稱通徑
do
D
K
g
g1
b
f
f1
Z-?d
DN'
D1
K1
g2
b1
f'
Z1-?d1
L
L1
L0
h
H
A37H-16C A43H-16C
50
25
165
125
100
20
3
4-18
32
140
100
78
18
2
4-18
115
110
165
235
547


80
40
200
160
135
20
3
8-18
50
165
125
100
16
3
4-18
135
120
190
285
795


80
50
200
160
135
20
3
8-18
65
185
145
120
18
3
4-18
140
130
205
310
835


100
65
220
180
155
22
3
8-18
80
200
160
135
20
3
8-18
160
135
255
355
890


125
80
250
210
185
22
3
8-18
100
220
180
155
22
3
8-18
170
160
260
410
1170


150
100
285
240
210
24
3
8-23
125
250
210
185
22
3
8-18
190
190
275
430
1240


A37H-25 A43H-25
50
25
165
125
100
20
3
4-18
32
140
100
78
18
2
4-18
115
110
165
235
547


80
40
200
160
135
22
3
8-18
50
165
125
100
16
3
4-18
135
120
190
285
795


80
50
200
160
135
22
3
8-18
65
185
145
120
18
3
4-18
140
130
205
310
835


100
65
230
190
160
24
3
8-23
80
200
160
135
20
3
8-18
160
135
255
355
890


125
80
270
220
188
28
3
8-26
100
220
180
155
22
3
8-18
170
160
260
410
1170


150
100
300
250
218
30
3
8-26
125
250
210
185
22
3
8-18
190
190
275
430
1240


A37H-40 A43H-40
50
25
165
125
100
88
20
3
4
4-18
32
140
100
78
16
2
4-18
115
110
165
235
547
80
40
200
160
135
121
22
3
4
8-18
50
165
125
100
16
3
4-18
135
120
190
285
795
80
50
200
160
135
121
22
3
4
8-18
65
185
145
120
18
3
4-18
140
130
205
310
835
100
65
235
190
160
150
24
3
4.5
8-23
80
200
160
135
20
3
8-18
160
135
255
355
890
125
80
270
220
188
176
28
3
4.5
8-26
100
220
180
155
22
3
8-18
170
160
260
410
1170
150
100
300
250
218
204
30
3
4.5
8-26
125
250
210
185
22
3
8-18
190
190
275
430
1240
A38Y-16C
50
20
165
125
100
20
3
4-18
40
150
110
85
16
3
4-18
198
100
165
225
636


80
32
200
160
135
20
3
8-18
65
185
145
120
20
3
4-18
230
120
190
265
817


100
40
220
180
155
22
3
8-18
80
200
160
135
20
3
8-18
293
140
265
265
921


150
80
285
240
210
24
3
8-23
125
250
210
185
22
3
8-18
320
175
250
420
1097


A38Y-25
50
20
165
125
100
20
3
4-18
40
150
110
85
16
3
4-18
198
100
165
225
636


80
32
200
160
135
22
3
8-18
65
185
145
120
20
3
4-18
230
120
190
265
817


100
40
230
190
160
24
3
8-23
80
200
160
135
20
3
8-18
293
140
265
265
921


150
80
300
250
218
30
3
8-26
125
250
210
185
22
3
8-18
320
175
250
420
1097


A38Y-40
50
20
165
125
100
88
20
3
4
4-18
40
150
110
85
16
3
4-18
198
100
165
225
636
80
32
200
160
135
121
22
3
4
8-18
65
185
145
120
20
3
4-18
230
120
190
265
817
100
40
235
190
160
150
24
3
4.5
8-23
80
200
160
135
20
3
8-18
293
140
265
265
921
150
80
300
250
218
204
30
3
4.5
8-26
125
250
210
185
22
3
8-18
320
175
250
420
1097


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.Duplex spring safety 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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