QDQ421F pneumatic emergency shut-off valve
- sell：021-32051999
- sell：021-32050777
- fax：021-66099555
Details
- Product Introduction
- Service Promise
- Ordering Process
Pneumatic emergency shutoff valve is a kind of safety protection valve, which is installed in liquefied petroleum gas storage tank station liquid and gas pipeline, and air compressor (or gas storage tank) matching use, in order to gas source pressure relief or high temperature to melt the easy-to-fuse plug alloy, valve automatically closed leak stoppage, safety protection. The valve can also be used as pneumatic cut-off valve. Remote control can be realized, closing quickly and opening flexibly. It is an ideal alternative to imports.
Working principle and structure elucidation
In the absence of air pressure, the valve disc is normally closed. When the air pump puts pressure gas into the valve cylinder, the valve disc opens. When the valve needs to be closed or in case of emergency, the pressure will be automatically closed.
The valve is fixed by the plunger on the valve seat, when the cylinder is the valve disc, when the pressure gas through the valve seat into the cylinder, the disc will leave the valve seat, when the pressure is released, the disc due to the role of spring force, quickly closed.
The flow direction of the working medium of the valve is outlet at the end of the valve seat and opposite direction of inlet and air pressure at the end of the valve seat. Path (DN):25-200 (mm)
Pressure (PN):2.5, 4.0MPa JIS-10K, 20K
Air source interface: PC1 / 4
High temperature solution temperature: 70 + 5 C
公称压力PN | 2.5、4.0MPa | 气缸工作压力 | ≤4.0MPa |
适用温度T | -40-+80℃ | 气缸使用介质 | 氢气、空气 |
工作介质 | 液化气、天然气 | 熔闭温度 | 70℃-±5℃ |
闭止时间 | ≤10秒 | 气缸开启介质 | ≥0.4MPa |
阀体 | 阀杆 | 弹簧 | 密封圈 |
碳钢 | 不锈钢 | 铬钒钢 | 聚四氟乙烯 |
PN | DN | L | H | H1 | D | D1 | D2 | b | f | Z-φd |
2.5MPa 4.0MPa | 25 | 160 | 260 | 230 | 115 | 85 | 65 | 16 | 2 | 4-14 |
32 | 180 | 270 | 240 | 135 | 100 | 78 | 18 | 2 | 4-18 | |
40 | 200 | 280 | 250 | 145 | 110 | 85 | 18 | 3 | 4-18 | |
50 | 230 | 300 | 270 | 160 | 125 | 100 | 20 | 3 | 4-18 | |
80 | 310 | 360 | 320 | 195 | 160 | 135 | 22 | 3 | 8-18 | |
100 | 350 | 400 | 360 | 230 | 190 | 160 | 24 | 3 | 8-23 | |
150 | 480 | 510 | 510 | 300 | 250 | 218 | 30 | 3 | 8-25 | |
200 | 600 | 610 | 550 | 360 | 310 | 278 | 30 | 4 | 12-25 |
QDY421F-25 /40 hydraulic emergency shut-off valve
Performance specification
公称压力PN | 0.5MPa 4.0MPa | 油缸使用压力 | ≤4.0MPa |
适用温度T | -40-+50℃ | 油缸使用介质 | 13#机械油 |
工作介质 | 液化石油气 | 熔闭温度 | 40℃-±50℃ |
闭止时间 | ≤10秒 |
PN | DN | L | H | H1 | D | D1 | D2 | b | f | Z-φd |
2.5MPa 4.0MPa | 25 | 160 | 232 | 242 | 115 | 85 | 65 | 16 | 2 | 4-14 |
50 | 230 | 346 | 359 | 160 | 125 | 100 | 20 | 3 | 4-18 | |
80 | 310 | 445 | 465 | 195 | 160 | 135 | 22 | 3 | 8-18 | |
100 | 350 | 590 | 623 | 230 | 190 | 160 | 24 | 3 | 8-23 | |
150 | 480 | 610 | 635 | 300 | 250 | 218 | 28 | 3 | 8-25 | |
200 | 600 | 630 | 645 | 360 | 310 | 278 | 30 | 4 | 12-25 |
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.：
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2、The factory can configure various types of driving devices according to customer's specific requirements.。
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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.
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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.。
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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, practice“Three packs”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.，
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”.。
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