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Archive for 2014

motorized valve on steam boiler
Zoning Steam Systems

A gravity-return steam system uses a combination of two forces to put the returning condensate back into the boiler. First, there’s the steam pressure that's leftover at ...

Published on 06/24/2014 11:50 AM by Dan Holohan
Posted in Steam Heating
vaporstat
What I've Learned About Steam Pressure

It had stood on this corner just off Wall Street in Manhattan for nearly a century. It stood witness to the comings and goings of countless people who never gave much tho...

Published on 06/24/2014 9:58 AM by Dan Holohan
Posted in Steam Heating
resize open pressuretrol
Steam Velocity

One of the things I had to get through my thick skull when I was young and learning about steam heat was that raising the pressuretrol setting wasn't going to get the bui...

Published on 06/24/2014 9:45 AM by Dan Holohan
Posted in Steam Heating
heating p160 227x300
Steam Piping and Pressure Differential

A New York City contractor called me a last winter to tell me about a situation that he had gotten himself into. We’ll call him Augie because that’s close enough. "The ol...

Published on 06/24/2014 9:32 AM by Dan Holohan
Posted in Steam Heating
Pipe Insulation FG
Why You Should Insulate Steam Pipes

When you take an old house under your wing you sometimes also get to take possession of an old steam heating system and an awful lot of asbestos insulation that goes alon...

Published on 06/24/2014 9:16 AM by Dan Holohan
Posted in Steam Heating
zone valves on steam boiler
How Vacuum Can Form in a Steam System

I heard from an old friend the other day. This guy works in Brooklyn, NY, and usually on some very interesting stuff. He's not one to say fuggedaboutit when there's a pro...

Published on 06/24/2014 9:05 AM by Dan Holohan
Posted in Steam Heating