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OEM Composite exhaust valve quick exhaust 2-4 inch flange Manufacturer, Factories
Product Description
Product Specifications
Valve Type
Exhaust valve
Structure
Compound
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
The compound exhaust valve is designed with a dual-function structure, combining high-speed large-volume air release and continuous micro-exhaust in one unit. It ensures efficient air discharge during pipeline commissioning and stable operation under working pressure.
Key Advantages
1
Integrated Dual-Function Design: Efficient & Cost Saving
Integrating the two major systems of high-speed massive exhaust and continuous micro exhaust, one equipment replaces two traditional valves, greatly reduces the cost of procurement and installation, and saves pipeline space. At the same time, it can quickly empty the air in the pipeline and reduce the air resistance, which not only improves the efficiency of water filling and water delivery, but also reduces the energy consumption of the water pump to achieve stable operation under all working conditions.
2
Intelligent Negative Pressure Protection
When the pipeline stops pumping or has a sudden negative pressure, it automatically and quickly enters the air to effectively prevent the pipeline from being deflated and deformed by negative pressure, while restraining the phenomenon of water hammer, avoiding damage to equipment and pipelines, prolonging the service life of the system and reducing the maintenance cost in the later period.
3
High Durability & Low Maintenance
It adopts ductile iron valve body and stainless steel floating ball, which has strong compression resistance and corrosion resistance, and is suitable for a variety of industrial media and harsh environment. The soft and hard composite seal realizes zero leakage in the whole pressure section, and supports online maintenance, without emptying the pipeline, shortens the maintenance time, and reduces the consumption of manpower and materials.
Material Specifications
| Body | Ductile iron |
| Bonnet | Ductile iron |
| Float | Stainless steel |
| Lever support | Stainless steel |
| Lever | Aluminum Steel |
| Stopper | Aluminum Steel |
Main Dimensions
| DN | D | D1 | H | N−Φd | |||
|---|---|---|---|---|---|---|---|
| PN10 | PN16 | PN10 | PN16 | PN10 | PN16 | ||
| 50 | 165 | 165 | 125 | 125 | 280 | 4−Φ19 | 4−Φ19 |
| 80 | 200 | 200 | 160 | 160 | 365 | 8−Φ19 | 8−Φ19 |
| 100 | 220 | 220 | 180 | 180 | 395 | 8−Φ19 | 8−Φ19 |
| 150 | 285 | 285 | 240 | 240 | 485 | 8−Φ23 | 8−Φ23 |
| 200 | 340 | 340 | 295 | 295 | 570 | 8−Φ23 | 12−Φ23 |
| 250 | 395 | 405 | 350 | 355 | 655 | 12−Φ23 | 12−Φ28 |
| 300 | 445 | 460 | 400 | 410 | 750 | 12−Φ23 | 12−Φ28 |
Packaging & Delivery
Standard export wooden case packaging
Frequently Asked Questions
Q: How does a compound exhaust valve work in pipeline systems?
A compound exhaust valve combines high-speed large-volume air release during initial water filling with continuous micro-exhaust under system working pressure, ensuring smooth pipeline operation and preventing trapped air pockets.
Q: What international standards do these valves comply with?
Our compound exhaust valves are designed and manufactured in accordance with global standards, including BS, API, DIN, and JIS standard flange specifications.
Q: What materials are used to ensure corrosion resistance?
The valve body and bonnet are made of durable ductile iron, while internal critical components like the float ball and lever support are manufactured from high-grade stainless steel to resist corrosion and wear.
Q: How does the valve protect pipelines against negative pressure?
When sudden negative pressure occurs during pump stops or power outages, the valve opens quickly to draw air into the system. This prevents vacuum collapse and dampens water hammer damage.
Yes, the valve supports online inspection and maintenance without emptying the entire pipeline system, reducing operational downtime and labor costs.
Q: What is the operational temperature range for this product?
This compound exhaust valve is rated for reliable performance within a temperature range of -20°C to 120°C.
