Double Orifice Air Release Valve China Factory and Reliable Suppliers
Product Overview
The Double Orifice Air Release Valve is a high-performance engineering solution designed for efficient air management within piping systems. By utilizing a dual-orifice mechanism, it ensures the rapid release of accumulated air during pipeline filling and the controlled admission of air during draining, effectively preventing vacuum formation and protecting the structural integrity of the pipeline.
Engineered for durability and precision, this valve is constructed from high-grade Ductile Iron (EN1563-GJS-450) and premium EPDM seals. It is specifically developed for demanding industrial environments, offering a wide range of nominal diameters from DN40 to DN300 to accommodate various flow requirements and pressure specifications in water supply and wastewater networks.
Detailed Parameters
| Main Body Material | Ductile Iron (EN1563-GJS-450 / BS2789) | Seal Material | EPDM (EN681-1 / BS2494) |
|---|---|---|---|
| Float Material | High-strength ABS Plastic | Fastener Material | Carbon Steel / Stainless Steel (ISO standards) |
| Size Range (DN) | DN40, DN50, DN65, DN80, DN100, DN150, DN200, DN300 | Weight Range | 19.50 kg to 59.00 kg |
| Cover/Side Body | Ductile Iron EN1563-GJS-450 | Bracket/Cap Material | Industrial Grade Nylon |
| Standards Compliance | BS2789, EN1563, EN681-1, ISO15481 | Operating Feature | Double Orifice Air Release |
Key Advantages
Corrosion Resistance
Built with Ductile Iron and EPDM, providing superior resistance against oxidation and chemical wear in wet environments.
Extended Service Life
The use of ABS and Nylon for internal components reduces friction and prevents premature wear of the float mechanism.
Dual-Action Efficiency
Simultaneously manages high-volume air expulsion and small-bubble release for optimized fluid flow.
Precision Engineering
Manufactured to strict EN and BS standards, ensuring perfect fitment and zero leakage across all DN sizes.
Easy Installation
Standardized dimensions and robust bracket design allow for swift integration into existing metal piping networks.
Versatile Application
Ideal for use in municipal water works, irrigation systems, and industrial cooling circuits.
Product Gallery
Management Platforms
Inventory Control
Real-time tracking of valve specifications and SKU levels for efficient delivery.
Quality Assurance
Strict adherence to EN1563 and BS2789 standards during the casting process.
Order Monitoring
Automated notifications from production stage to final shipping for transparency.
Logistics Tracking
Integrated GEO-tracking for global shipments of heavy metal castings.
Custom Specification
Flexible platform for adjusting material grades based on client site requirements.
Technical Support
Digital access to dimension charts and installation manuals for all product lines.
Investment Return Comparison
| Performance Metric | Standard Valve | Double Orifice Valve |
|---|---|---|
| Air Discharge Rate | Moderate | Ultra-High |
| Vacuum Protection | Basic | Advanced / Fail-safe |
| Maintenance Cycle | Frequent | Extended (Low Wear) |
| System Downtime | Higher Risk | Minimized Risk |
| Long-term ROI | Baseline | High (Reduced Pipe Failures) |
Frequently Asked Questions
Ductile iron provides significantly higher strength and flexibility than grey iron, making the valve resistant to impact and thermal shock, which is critical for high-pressure metal pipe systems.
Unlike single valves, the double orifice can release large volumes of air during initial filling and small amounts of air during operation, ensuring the pipeline stays free of air pockets at all times.
EPDM is excellent for water and steam applications due to its superior weather, ozone, and heat resistance, making it the standard for municipal water works.
Due to the use of ABS and Nylon components, mechanical wear is minimized. Routine inspection of the seals and cleaning of the orifice every 12-24 months is usually sufficient.
Yes, while we follow BS and EN standards, we can adjust material specifications or wall thickness to meet specific project pressure requirements.
For large-scale networks, DN150 to DN300 valves are recommended to ensure the volume of air released matches the flow rate of the piping system to avoid water hammer.
