Jas.P.Marsh Steam Vent

chof1982

Anyone ever seen this and/or had to replace one?

chof1982

Rusted pic is the one trying to replace, The shiny one is just another in the building that still had visible numbers on it.

mattmia2

Is that fitting with the union part of it too? Is it some sort of combo crossover trap and return vent or something?

Waher

https://www.heatinghelp.com/assets/documents/MarshDiagram.pdf

Steamhead

That looks like an air-line vent, such as would be used on a Paul system. Hoffman used to make one called the #3, and you might be able to find one online.

Long Beach Ed

I was able to get a number of #3 Hoffman vents from their distributor just a few years ago. Hold onto your wallet.