YFA72W vacuum negative pressure safety valve

YFA72W vacuum negative pressure safety valve
  • sell:021-32051999
  • sell:021-32050777
  • fax:021-66099555

Details

  • Product Introduction
  • Service Promise
  • Ordering Process

YFA72W vacuum negative pressure relief valve is suitable for the negative pressure system whose temperature is less than 200 ~C. When the negative pressure in the container exceeds the allowable value, the valve opens automatically and sucks air. When the negative pressure in the container reaches the allowable value, the valve closes automatically, thus protecting the equipment and system. Installed in the normal non-negative pressure system, when the container and system release valve is not opened, resulting in negative pressure, the valve automatically opens.
工作温度
≤200℃
适用介质
YFA72W-10P适用于硝酸类介质
YFA72W-10R适用于醋酸类介质
Material of main parts
NO.
零件名称
YFA72W-P材料
YFA72W-R材料
1
阀体
ZG1Cr18Ni9Ti
ZG1Cr18Ni12Mo2Ti
2
阀座
1Cr18Ni9Ti
ZG1Cr18Ni12Mo2Ti
3
调节圈
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
4
阀盖
ZG1Cr18Ni9Ti
1Cr18Ni9Ti
5
阀杆
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
6
弹簧
50CrVA
50CrVA包覆氟塑料
Main dimensions
公称通径
尺寸
D
D1
D2
Z-ød
b
f1
H
15
95
65
45
4-14
14
2
110
20
105
75
55
4-14
16
2
130
25
115
85
65
4-14
16
2
150
32
140
100
78
4-18
18
2
180
40
150
110
85
4-18
18
3
200
50
165
125
100
4-18
20
3
221
80
200
160
135
4-18
22
3
245
100
220
180
155
8-18
22
3
253
125
250
210
185
8-18
24
3
280
150
285
240
210
8-23
24
3
329
200
340
295
265
8-23
26
3
377
250
395
350
320
12-23
28
3
440

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.YFA72W vacuum negative pressure 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!