Jacobus Maid-O-Mist J6 #6, 1/8" Angle Air Valve
A Jacobus Maid-O-Mist steam radiator air vent used to release trapped air from steam radiators so they heat properly and more evenly across the system when the correct vent size is required.
Key Features
- Steam radiator vent, Model #6, angle pattern with 1/8" male connection
- Non-adjustable vent (fixed venting rate)
- Vent size: 0.0935"
- Temperature range listed: 140°F - 240°F (240°F max)
- Manufacturer guidance for Model 6: venting capacity equal to 8 ordinary air valves, recommended for radiators farther from the boiler and in cold rooms
- Material listed: Steel
Compatibility & Applications
- Intended for steam radiator venting applications (radiator air removal/balancing).
- Manufacturer positions Model 6 for radiators farther from the boiler and cold rooms as part of balancing vent sizes across a system.
Installation & Operation Notes
- Installation should be performed by a qualified steam/heating technician.
- Follow the steam system and radiator service guidance for safe shutdown/cool-down and correct vent replacement procedure.
- Proper balancing depends on selecting the correct vent size for each radiator location; follow the manufacturer's vent sizing recommendations when choosing where to install Model #6 vents.
Maintenance & Troubleshooting
- This part is commonly replaced or upgraded when addressing uneven heat, slow-to-heat radiators, or overall balancing issues in steam systems.
- If a radiator remains cold/slow after replacement, follow system troubleshooting to confirm vent sizing is appropriate and that the radiator and piping can vent air properly
- If a vent leaks or fails to vent reliably, replacement is typically the corrective action.