Maid-O-Mist Jacobus Model # C - Venting capacity equal to 15 ordinary air valves. Use on radiators farthest from boiler and in coldest rooms (for example, on third-floor radiators and above).
Features:
- Self-adjusting thermostatic control
- Float to prevent water escape
- Reduces radiator noise
- Cut fuel consumption
- Assures even heat distribution
- Lower operating costs
- Improved nickel plated brass body, valve seat, solid float and bi-metal thermostatic element
Jacobus Radiator Steam Vent Spec Sheet