Pipeline Explosion Barrier Valve
Material Combination: Housing Carbon Steel + Valve Plate Stainless Steel
Pressure Drop Indicator: ≤500Pa (under condition of 25 m/s wind speed)
On-site inspection and repair possible without disassembling the pipeline
Standard horizontal installation; vertical installation permitted for specific applications
Valve disc is normally open design; optional explosion detection sensor for monitoring closure status
Integrated anti-rebound locking system
Magnetic drive enables ultra-fast response
Aerodynamic internal contour prevents dust accumulation
Product Details
Product Overview
In industrial systems, many containers are interconnected, such as dust collectors and pipes, food storage bins and pipes. If an explosion occurs in one unit, flames and pressure will diffuse through the pipelines to other equipment, causing secondary or multiple explosions. Installing an explosion isolation flap valve can effectively suppress explosion diffusion, protect adjacent equipment or workshops, and avoid explosion chain reactions.
A pipeline explosion isolation valve is an industrial pipeline safety device. Its main function is to prevent the reverse propagation of explosive flames and pressure within the pipeline, thereby protecting downstream equipment and personnel safety. The following is detailed information about this valve.
Product Features
Rapid Explosion Isolation: Can react to explosion pressure in an extremely short time, quickly close the valve plate, and block explosion propagation.
Adaptability to Complex Conditions: Made 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 for easy installation and maintenance.
Intelligent Configuration: Some high-end products are equipped with real-time monitoring equipment, supporting remote valve status monitoring.
High-Efficiency Explosion Isolation
Through precise structural design and sensitive pressure perception mechanism, it responds quickly and closes immediately upon explosion. Explosion isolation efficiency exceeds 99%, greatly reducing the risk of explosion spread. For instance, in a flour mill, if a dust explosion occurs in the grinding workshop, the one-way explosion isolation valve can immediately sever pipelines connecting to other workshops, preventing fire expansion.
Long Life and High Reliability
Uses high-quality materials like stainless steel, featuring high strength, high-temperature resistance, and corrosion resistance. Can adapt to severe industrial environments, operate stably for long periods, reduce maintenance and replacement frequency, and lower enterprise safety operation costs.
Unidirectional Flow Design
Only permits material or gas to pass in one direction without affecting normal production processes. The valve plate remains open under non-explosive conditions, ensuring unimpeded pipelines with low resistance, having minimal impact on material conveying efficiency.
Explosion-proof Control Box
Explosion-proof Rupture Sensor
Working Principle
In a dust explosion, the shockwave arrives before the flames. The explosion isolation valve closes rapidly upon detecting the shockwave and is reliably locked by its self-locking mechanism, effectively preventing the propagation of flames and pressure waves.
After an explosion event, the valve can be manually reset. It is ready for reuse again after simple maintenance and safety assessment. During normal operation, the valve plate remains open via an assisted opening device.
Technical Specifications
Nominal Diameter Length × Width × Height (mm) Explosion Protection 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: Model HE
Use and Care
Before operating the system fan, be sure to confirm the explosion-proof valve is in the open state to prevent damage to the fan and other equipment caused by the valve plate closing and locking.
After installation and use, perform maintenance at least once a month. The maintenance frequency can be increased appropriately based on specific working conditions.
After maintenance and reassembly, a sealing test must be conducted and details recorded for future reference.
Company Profile
Shandong Zhengda Weiye Safety Equipment Co., Ltd. is a high-tech enterprise with independent intellectual property rights, focusing on providing safety pressure relief products and solutions.
Main products include rupture discs, safety valves, breather valves, flame arresters, dust explosion protection equipment, and bending pin valves.
Based in Jinan City, Shandong Province, the company is committed to the R&D and manufacturing of safety pressure relief and explosion-proof devices. Over the years, it has provided safety pressure relief and explosion-proof technology to many domestic enterprises and holds numerous domestic and international patents and technologies. The company is a one-stop supplier of safety pressure relief solutions and has obtained China's Special Equipment Manufacturing License, ISO9001 certification, and national explosion-proof certification.
