- ball
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- Cut-off valve
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- Safety valve
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- Inlet valve
- Import actuator
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 has excellent technical performance, low load loss and high reliability. It is installed on LPG, natural gas and gas pipeline, and is used with long-distance gas source. The valve is opened-closed by gas source control, so that the gas source can be discharged quickly and manually when a large number of leaks occur on the pipeline or storage tank or even fire occurs. Fusible alloy melts easily when pressure, or high temperature (> 75%% p5C%% D), and cylinder automatically relieves pressure, emergency shutoff valve (< 5 seconds) quickly closes and stops leakage, playing a safety protection role. Widely used in gas supply network system, gas heat plant workshop, gas boiler room and residential safety facilities.
Characteristic
Pneumatic emergency shutoff valve is a kind of valve of actuator in automation system. It consists of multi-spring pneumatic membrane actuator or floating piston actuator and regulating valve. It receives the signal of regulating instrument and controls the cutting, connecting or switching of fluid in process pipeline. The utility model has the advantages of simple structure, sensitive reaction and reliable movement. It can be widely used in petroleum, chemical, metallurgical and other industrial production departments. The air source of the pneumatic shutoff valve requires filtered compressed air. The medium flowing through the valve body should be impurity-free and granular liquid and gas.
Working principle
1. Install a two-position three-way solenoid valve at the air source inlet of the emergency shutoff valve, and control the valve switch with the remote electrical console.
2. the gas leakage alarm alarm is electrified, the solenoid valve is electrified and the exhaust valve is automatically closed.
3. manual control solenoid valve (press the red card) exhaust, the valve automatically closes.
Performance specification
Pressure level: 1.6/4.0Mpa
Cylinder working pressure: less than 2.0Mpa
Service temperature: -40~ 80 C
Cylinder medium: nitrogen, anhydrous air
Use medium: natural gas, liquefied petroleum gas, liquid ammonia
Melting time: + 70 C
Closing time: less than 5 seconds.
Cylinder opening pressure: greater than or equal to 0.3-0.6Mpa
Valve body: cast rigid, stainless steel. 304316316L
Spring: 50CrVA (spring steel)
Cylinder, piston: ductile iron
Sealing ring, O ring: polytetrafluoroethylene, butadiene rubber
Type: normally open, normally closed.
Main shape connection dimensions
DN | L | H | D | D1 | D2 | b | f | z-d |
15 | 130 | 215 | 95 | 65 | 45 | 16 | 2 | 4-14 |
20 | 150 | 255 | 105 | 75 | 55 | 16 | 2 | 4-14 |
25 | 160 | 285 | 115 | 85 | 65 | 16 | 2 | 4-14 |
32 | 180 | 300 | 135 | 100 | 78 | 18 | 2 | 4-18 |
40 | 200 | 320 | 145 | 110 | 85 | 18 | 2 | 4-18 |
50 | 230 | 380 | 160 | 125 | 100 | 20 | 3 | 4-18 |
65 | 290 | 420 | 180 | 145 | 120 | 22 | 3 | 8-18 |
80 | 310 | 450 | 195 | 160 | 135 | 22 | 3 | 8-18 |
100 | 350 | 520 | 230 | 190 | 160 | 24 | 3 | 8-23 |
125 | 400 | 558 | 270 | 220 | 188 | 28 | 3 | 8-23 |
150 | 480 | 750 | 300 | 250 | 218 | 30 | 3 | 8-25 |
200 | 600 | 950 | 360 | 310 | 278 | 34 | 3 | 12-25 |
250 | 650 | 1050 | 425 | 370 | 322 | 36 | 3 | 12-30 |
300 | 750 | 1120 | 485 | 430 | 390 | 40 | 3 | 16-30 |
Installation notes
1. Seal all external passages of the valve with plugs or covers when in storage. Store in a dry and ventilated room. Check regularly for long-term storage, remove dirt, and apply rust-proof oil on the processing surface to prevent rust.
2. before installation, the valve should be cleaned up and threaded connections should be tightened.
3. Emergency shutoff valve uses the principle of check valve, can only be truncated, installation must pay attention to the valve sign, will protect the end as the valve inlet. Valve installation direction: high inlet and low outlet.
4. the order should be specified in the form of flange seal, pressure level and connection standard.
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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