The Caleffi 502630 is a ROBOCAL air vent with a 3/8 in connection and a brass body, used to automatically discharge air that collects at the high points of hydronic heating and cooling systems.
Product data compiled from Caleffi North America technical documentation. Last reviewed June 2026.
Key Features
Automatic Air Discharge
A float mechanism opens to release accumulated air automatically, then reseals as the system fills.
High-Point Venting
Installs at manifolds, separators and pump locations where air naturally collects.
High Discharge Pressure
Vents air against system pressure up to 6 bar maximum air discharge pressure.
3/8 In Connection
3/8 in connection sized for the application.
Brass Construction
Brass body with stainless and EPDM internal components for hydronic service.
Technical Data
| Function | Automatic float air vent |
|---|---|
| Series | Caleffi ROBOCAL |
| Connection | 3/8 in |
| Body material | Brass |
| Maximum operating pressure | 10 bar |
| Maximum air discharge pressure | 6 bar |
| Medium temperature range | 0 - 115 °C |
Documentation
Technical brochureRelated Products
Frequently Asked Questions
At the high points of a hydronic system such as manifolds, air separators and pump locations, where air naturally collects.
An internal float drops as air accumulates, opening the discharge port; when water returns, the float rises and reseals the vent.
Up to 6 bar maximum air discharge pressure, with a 10 bar maximum operating pressure rating.
10 bar maximum operating pressure with a medium temperature range of 0 - 115 °C.
- Type:
- Air Vent
- Series:
- ROBOCAL
- Body Material:
- Brass
- Connection Size:
- 3/8 in
