Product Overview

The HAWLE Air Release Valve 9842K is a sophisticated automatic 3-way air release valve with cylindrical floats and a 2-level ventilation system. This model is designed for robust and reliable technology, preventing pipeline damages from vacuum or pressure shocks. It ensures optimum ventilation during filling and draining processes and is suitable for nominal diameters from DN 50-300.

Key Benefits

• Automatic and dynamic air release.
• Broad pressure range: PN 6, PN 10, PN 16, PN 25, PN 40.
• Efficient, high-performance ventilation protects pipelines from vacuum-related damages.
• High velocity air discharge prevents premature closure, safeguarding optimum ventilation during filling.
• A 2-level ventilation system provides effective protection against pressure shocks during high ventilation speeds.
• Provides continuously reliable ventilation of air inlets under normal operating conditions.
• Features a compact construction with low volume and weight.
• Robust and reliable technology.

Applications

• Pipelines and containers requiring automatic air release and/or air inflow.
• Installation at high points in water distribution systems.
• Protection of pipelines from vacuum or pressure shock damages.
• Ensuring optimum ventilation during filling and drainage processes.

Features & Construction

• Automatic 3-way air release valve with cylindrical floats.
• Ventilation outlet in nominal size with a large opening cross-section.
• All metallic parts are made of stainless steel.
• The body is made of ductile iron and is epoxy powder coated inside and outside.
• The bonnet is steel, with a stainless steel option.
• The float guide, small opening, and cover are made of stainless steel.
• The float is made of PE and the sealing seat/O-ring are made of elastomer.
• The plug is steel.
• Flanges comply with EN 1092-2 standards.

Technical Specifications

Installation & Maintenance

• Installation should be upright, preferably at the highest point in the pipeline, together with isolating valves.
• The valves are to be maintained according to usage conditions.
• The valve (a wearing part) is replaceable on the spot in a depressurised status.