Maid-O-Mist: Since 1932, Maid-O-Mist has manufactured and marketed the most complete line of manual and automatic air elimination valves for steam, hydronic, and solar applications. Maid-O-Mist also manufactures a complete line of Float operated level controls for water systems and applications. STEAM TRAP CENTER is your source for the complete line of Maid-O-Mist Products.


As a division of Maid-O-Mist, Jacobus provides high quality Steam and Radiator Vents in various sizes and configurations. STEAM TRAP CENTER can assist you in choosing which venting option will provide the best result in any given Steam Venting required application.

Steam Trap

Steam Traps for All Purposes

Residential, Commercial, & Industrial Steam Traps. Air Vent Valves for Steam or Water.



Complete Rebuilding Kits for every brand of Steam Trap; Building Surveys, Seminars, and Troubleshooting