Caleffi 551004A Air VentIntroducing the Caleffi 551004A Air Vent, a high performance automatic float air vent designed for reliable air removal in heating and air conditioning systems. The float type mechanism automatically vents trapped air, preventing air locks and boosting system efficiency. Constructed with a brass body for durability and featuring an EPDM seal, this vent delivers long lasting performance in demanding HVAC environments. It handles both air and water

Designed for durable operation in demanding environments

and related models

Constructed with an aluminum body and a versatile NEMA 1/3/4 enclosure

non-lock up design and a 3/4 inch nominal size

this maintenance kit keeps your instrument calibrated and ready between service visits

Includes display

Setpoint and performance specs ensure safe

It’s a practical

and circuit protection in a compact 4x4 inch junction box footprint

Easy installation for quick maintenance and minimal downtime

swing radius: 3

Built to endure outdoor conditions