Product Overview

The HAWLE Air Release Valve - 9863 is a continuous air release valve specifically designed for wastewater applications. It operates within a diameter range of DN 50 to DN 200 and has a pressure rating of PN 10 or PN 16. A key feature of this valve is that its sealing seat is not in direct contact with the wastewater, due to an air pocket, which contributes to its durability. Both connections on the valve enable efficient flushing during maintenance work, with the top connection serving as a rinsing water ingress point. All mechanical parts are made of corrosion-resistant materials, ensuring long-term reliability even when removing large quantities of air under working pressure.

Key Benefits

• Continuous air release for wastewater applications.
• Sealing seat is not in contact with wastewater (air pocket), enhancing longevity.
• Both connections enable efficient flushing during maintenance.
• All mechanical parts are made of corrosion-resistant materials.
• Enables the removal of large air quantities even under working pressure due to continuous function.
• High maximum air release capacity.

Applications

• Wastewater pipelines and systems.

Features & Construction

• Diameter range: DN 50–DN 200.
• Pressure rating: PN 10 | PN 16.
• Sealing seat design: Not in contact with wastewater via an air pocket.
• Corrosion-resistant materials for all mechanical parts.

Technical Specifications

Property	Details
Diameter Range	DN 50–DN 200
Pressure Rating	PN 10 | PN 16
Max. Air Release Capacity	440 m³/hr
Max. Opening Size	480 mm²
Flange Drilling	PN 10 – DIN 2501 (PN 16 – DIN 2501 for DN 200, please specify when ordering)

Installation & Maintenance

• Air release valves must be checked and serviced regularly.
• Maintenance involves taking the valve out of operation and flushing via both connections.
• For dimensioning of air release valves, customers should observe technical information or the worksheet by the DVGW (German Association for Gas and Water) W 334.