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Emergency shut-off valve for QA421F ammonia
- sell：021-32051999
- sell：021-32050777
- fax：021-66099555
Details
- Product Introduction
- Service Promise
- Ordering Process
Ammonia shutoff valve is a new type of valve product developed by our company in combination with the advantages of many pneumatic valves at home and abroad. Ammonia shutoff valve has excellent technical performance, low load loss and high reliability. It is installed in liquid ammonia, gas or gas pipeline, matched with gas source [nitrogen `anhydrous air], and is opened by gas source control valve. Open-close, in order to leak or even fire on the pipeline or tank, the staff quickly through a long-distance solenoid valve or manual pressure relief, or high temperature (> 80 C) melting (fusible alloy), and automatic pressure relief cylinder, valve quickly closed and leak stopping, for safety protection.
Characteristic
Cut-off valve combines the advantages of globe valve, check valve, solenoid valve and pneumatic valve. It has the characteristics of simple structure, sensitive response and reliable operation. Cut-off valve is a kind of valve of actuator in automation system. It is composed of multi-spring pneumatic membrane actuator or floating piston actuator and regulating valve. It receives the signal of regulating instrument and controls the cut-off, switch-on or switch-over of fluid in process pipeline. It can be widely used in petroleum, chemical, metallurgical and other industrial production departments. The air source of the pneumatic emergency shutoff valve requires filtered compressed air, and the medium flowing through the valve body should be impurity-free and granular gas.
Working principle
1. A two-position three-way solenoid valve is installed at the air source inlet of the shutoff valve, and the valve is controlled by 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.
4. electrical connection: plug-ins (positive and negative)
5. Coil power: AC 220V at Performance specification Pressure level: 2.5/4.0Mpa 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, gas, liquid. Melting time: + 70 C Closing time: less than 5 seconds. Cylinder opening pressure: greater than or equal to 0.5-0.7Mpa Valve body material: carbon steel. Stainless steel.304.316.316L Cylinder, piston ductile iron Sealing ring, O ring: polytetrafluoroethylene, butadiene rubber Spring: 50CrVA (spring steel) Type: normally open. Normally closed. 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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