Caleffi 502043A

Caleffi 502043A is a 1/2" NPT male high capacity air vent Minical designed for fast, reliable air elimination in hydronic heating and cooling systems. This compact unit features a precision orifice and robust seals to ensure quiet operation and consistent performance even under fluctuating pressure.

This Minical air vent provides automatic air release, helping prevent airlocks, reduce pump cavitation, and improve overall system efficiency. The durable brass body resists corrosion and accepts standard 1/2" NPT male connections for straightforward installation in existing loops.

Ideal for boilers, radiant floor heating, fan coils, and other closed-loop hydronic networks, it maintains steady pressure and minimizes nuisance noises while maximizing heat transfer. Regular maintenance is simple and the vent is designed for long service life in demanding environments.

• High-capacity air venting for rapid air removal
• 1/2" NPT male connection for easy installation
• Durable brass construction resists corrosion
• Automatic air release reduces air pockets and cavitation
• Low-maintenance design for long-lasting performance