Caleffi 502620A NPT Male Automatic Air Vent - 1/4

The Caleffi 502620A is a compact automatic air vent designed to efficiently remove air from hydronic heating and cooling systems. This high-quality air eliminator features a 1/4" NPT male threaded connection for easy installation in various system configurations.

Key Features:

• Automatic air venting operation eliminates manual bleeding requirements
• 1/4" NPT male thread connection for standard pipe fitting compatibility
• High-impact thermoplastic body construction for durability and corrosion resistance
• Stainless steel float mechanism ensures reliable long-term performance
• Maximum working pressure of 150 PSI (10 bar)
• Operating temperature range from 0°F to 240°F (-18°C to 115°C)
• Hygroscopic cap prevents water leakage while allowing air discharge

This automatic air vent continuously removes trapped air and dissolved gases from closed-loop hydronic systems, improving system efficiency and preventing airlocks. The compact design allows installation in tight spaces, making it ideal for residential and light commercial applications including boilers, radiators, radiant heating systems, and chilled water systems.