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What main vent is this
danmasri
Member Posts: 11
I find the main vent but not sure the model. Anyone can identify it?


0
Comments
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That's one of the smaller Hoffman vents -- there should be a number on it somewhere. It is probably not big enough for a modern system...Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
Looks like a Hoffman #4A or #16. Very small vent. Where is it installed on your system?All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
It resembles a Hoffman #4 quick vent valve, Possibly equal to the Hoffman 75 A, it has a .375 port. This vent valve is designed for small steam systems and as a replacement vent valve is very expensive.
Gorton or Maidomist is far more economical.
JakeSteam: The Perfect Fluid for Heating and Some of the Problems
by Jacob (Jake) Myron0
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