Hot Products
0102030405
China Suppliers Factory Single Port Air Exhaust Valve Ductile Iron PN16 for Liquid Pipeline Systems
| Valve Type | Exhaust valve | Structure | Single port |
| Standard | BS/API/DIN/JIS | Workmanship | Investment casting |
| Sealing Direction | Single-directional | Sealing Grade | Zero leakage |
| Temperature | -20°C < T < 120°C | Operation | Self-starting |
Characteristics
This air valve adopted flange-connected, installed firmly and sealed well, suitable for large-diameter, medium and high-pressure pipelines, not easy to fall off and leak water.
Advantages
-
🔩 1. Firm Connection and Reliable Sealing
The pressure is higher, and it is not easy to loosen and leak.
Suitable for large-diameter, medium and high-pressure pipeline networks, safer than threaded exhaust valves. -
💨 2. High Exhaust Efficiency, No Suffocation
Single port large channel, rapid and large exhaust during pipeline water injection.
Continuous micro exhaust during operation to eliminate air resistance and water hammer and ensure stable water pressure. -
🛡️ 3. Both Exhaust and Negative Pressure Protection
Normal exhaust function is maintained at all times.
When the pipeline is under negative pressure, it will automatically air in to prevent the pipeline from being sucked and damaged.
Packing
Standard export wooden case packaging
Frequently Asked Questions
❓
What is a single port air exhaust valve and how does it work?
A single port air exhaust valve is a self-starting valve designed to automatically release trapped air from pipelines during water injection and operation. It opens to expel large volumes of air quickly during filling, and then provides continuous micro-exhaust during normal operation to eliminate air pockets, water hammer, and pressure fluctuations.
❓
What materials and standards does this air exhaust valve comply with?
This single port air exhaust valve is made from ductile iron and is manufactured through investment casting for precision and durability. It complies with multiple international standards including BS, API, DIN, and JIS, making it suitable for global pipeline projects.
❓
What is the working temperature range of this valve?
This air exhaust valve is designed to operate within a temperature range of -20°C to 120°C, making it suitable for a wide variety of pipeline environments including cold-weather installations and moderately high-temperature water systems.
❓
Why is the flange connection preferred over a threaded connection for this valve?
The flange connection provides a much more secure and stable installation compared to threaded connections. It is less likely to loosen or leak under higher pressure conditions, making it the preferred choice for large-diameter, medium and high-pressure pipeline networks where safety and reliability are critical.
❓
Can this valve protect the pipeline under negative pressure conditions?
Yes. This valve features both exhaust and negative pressure protection functions. When the pipeline experiences negative pressure, the valve automatically opens to allow air intake, preventing the pipeline from collapsing or being damaged due to vacuum conditions. This dual function significantly extends pipeline service life.
❓
What type of packaging is used for export shipment?
All valves are packed in standard export wooden cases, which are designed to protect the products during long-distance international shipping. The packaging ensures the valves arrive in perfect condition and meet the requirements of customs and international logistics standards.