Radiator plug removal

Mike T., Swampeast MO

Again, while not fun to either do or to bleed, you could drill and tap each of those sections for an air bleeder. Since the top removes you could "hide" them towards the inside.

Chuck_17

Plug removal/venting

See attached radiator. The client wants to use it in a bldg. with hot water heat. It looks like it was previously used for a one pipe system. Assuming the plug (on the end in the picture)has never been removed, do you think it will come out?
This brings up another point - how was this radiator vented?

Mike T., Swampeast MO

Bundy Rads Again

Believe they're only suitable for steam as the tops of those looped tubes don't connect. Maybe (but highly doubtful) that each of those loops connects into the base in such a way to put them in series.

Possible (but not really practical) to tap in an air bleeder very near the top of EACH looped tube...

The old plugs usually do come out even if you do have to drill, cut and or other time-consuming things.

Steamhead

Chuck, these particular Bundys

were never designed for hot-water heat. It might be possible to drill and tap each loop, but the water would not flow thru them properly.

Best bet is to sell or trade them for ones designed for hot-water. Too late for Mad Dog's house- he already has Bundys- but you might find another steam afictionado who will want them.

Rodney Summers

Well,,,,,,

Here's one idea that may work and work well.

Rather than thinking about the unjoined tops of each section being a place to hide air, think about putting the system under a near vacuum before filling it.

Even a mild vacuum would allow the "tubes" to fill some of the way up and allow normal migration of air in the upper rad sections to be caught in a boiler baffle or simple air separator - provided of course that you pump away from the PONPC - over time!

Think about it. Even cast iron without water backing and circulation is an excellent heating "conductor."

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Chuck_17

Even steam must have had a problem with no vent?

Mike T., Swampeast MO

Steam is lighter than air so it naturally rises to the top of each secion even when not connected across the top. The heavier air then exits via the vent. Remember--the air vent for a steam radiator is about 2/3 to 3/4 of the way DOWN.