Explosion Isolation
Materials: Housing Carbon Steel + Valve Disc Stainless Steel
Pressure Drop: ≤500Pa @ 25 m/s
On-site servicing possible without pipeline removal
Standard horizontal mounting; vertical installation available for specific applications
Normally open valve disc design; optional blast detection sensor for closure monitoring
Integrated anti-bounce locking mechanism
Magnetic actuation for ultra-fast response
Aerodynamic internal profile prevents dust accumulation
Product Details
Product Overview
In practical production, various containers are often interconnected via pipelines, such as dust collectors and pipes, silos and pipes. If an explosion occurs in one device, flames and high-pressure gas will rapidly spread through the pipelines to other equipment, leading to secondary or multiple explosions. Installing an explosion isolation valve can effectively contain the explosion propagation, protect adjacent equipment and workshops, and prevent chain-reaction explosion accidents.
A pipeline explosion isolation valve is a safety device used in industrial pipeline systems. Its primary function is to prevent the reverse propagation of explosive flames and pressure within the pipeline, thereby safeguarding downstream equipment and personnel. The following is detailed information about this valve.
Product Features
Efficient Explosion Isolation: Can sense explosion pressure in an extremely short time, rapidly close the valve disc, and block explosion propagation.
Adaptability to Complex Working Conditions: Manufactured from high-strength materials like stainless steel or aluminum alloy, resistant to high temperature, high pressure, dust, and corrosion.
Compact Structure: Small size and light weight facilitate installation and maintenance.
Intelligent Design: Some high-end models are equipped with real-time monitoring devices, enabling remote monitoring of valve status.
Efficient Explosion Isolation Performance
Thanks to its precise structure and sensitive pressure sensing mechanism, it can respond instantly and close upon explosion occurrence. The explosion isolation efficiency is as high as over 99%, significantly reducing the risk of explosion spread. For example, in a flour mill, if a dust explosion occurs in the grinding workshop, the one-way explosion isolation valve can immediately cut off the pipelines connected to other workshops, preventing the fire from spreading.
Long Service Life and Reliability
Made from high-quality materials such as stainless steel, offering high strength, high-temperature resistance, and corrosion resistance. It can adapt to harsh industrial environments, operate stably over long periods, reduce the frequency of maintenance and replacement, and lower enterprise safety operation costs.
One-Way Flow Design
Only allows material or gas to flow in one direction without affecting the normal production process. The valve disc remains open under non-explosive conditions, ensuring unimpeded pipelines with minimal resistance, having no significant impact on material conveying efficiency.
Explosion-proof Electrical Box
Explosion-proof Burst Sensor
Working Principle
During a dust explosion, the shockwave arrives before the flame front. The isolation valve closes rapidly upon detecting the shockwave and is securely locked in place by its self-locking mechanism, effectively preventing the propagation of both flames and pressure waves.
After an explosion event, the valve can be manually reset. It is ready for reuse after simple maintenance and safety evaluation. During normal operation, the valve disc remains open via an assisted opening device.
Product Specifications
| Specification | L-W-H (mm) | Explosion Rating |
|---|---|---|
| DN100 | 409×324×497 | ST1, ST2 |
| DN150 | 587×386×550 | ST1, ST2 |
| DN200 | 587×386×550 | ST1, ST2 |
| DN250 | 628×443×624 | ST1, ST2 |
| DN300 | 778×507×693 | ST1, ST2 |
| DN350 | 868×641×788 | ST1, ST2 |
| DN400 | 946×641×813 | ST1, ST2 |
| DN450 | 1093×795×922 | ST1, ST2 |
| DN500 | 1093×795×922 | ST1, ST2 |
| DN550 | 1240×885×1020 | ST1, ST2 |
| DN600 | 1240×885×1074 | ST1, ST2 |
| DN650 | 1300×989×1191 | ST1 |
| DN700 | 1390×989×1191 | ST1 |
Accessories
Blast Sensor: Type HE
Use and Maintenance
Before starting the system fan, ensure the explosion-proof valve is in the open state to prevent damage to the fan and other equipment caused by the valve disc being closed and locked.
After installation and use, perform maintenance at least once a month. Maintenance frequency can be increased appropriately according to actual working conditions.
After maintenance and reassembly, conduct a sealing test and keep detailed records for future reference.
About Us
Shandong Zhengda Weiye Safety Equipment Co., Ltd. is a high-tech enterprise with independent intellectual property rights, dedicated to providing safety pressure relief products and solutions to society.
Main products include rupture discs, safety valves, breather valves, flame arresters, dust explosion protection equipment, and bending pin valves.
Located in Jinan City, Shandong Province, the company specializes in the R&D and production of safety pressure relief and explosion-proof devices. It has provided safety pressure relief and explosion-proof technology support to numerous domestic enterprises and holds several domestic and international patents and technologies. The company is a one-stop provider of safety pressure relief solutions and has obtained the Special Equipment Manufacturing License of the People's Republic of China, ISO9001 certification, and national explosion-proof certification.
