Broomell trap

keith123

Show and tell 

jumper

Wonder how much steam escapes trap through air hole?

mattmia2

Probably so little that it condenses in the first foot or so of return from the radiator if it even gets there in the first place since the vaporstat and metering valve should keep it from getting to the return.

Mad Dog_2

Always reminded me of a little preggers Shetland Pony. Mad Dog 🐕 

jumper

mattmia2 said:

Probably so little that it condenses in the first foot or so of return from the radiator if it even gets there in the first place since the vaporstat and metering valve should keep it from getting to the return.

In that case isn't this device superior to conventional trap? Unbreakable.

keith123

My thoughts exactly jumper. No moving parts. Like a Hoffman loop. 

mattmia2

jumper said:

mattmia2 said:

Probably so little that it condenses in the first foot or so of return from the radiator if it even gets there in the first place since the vaporstat and metering valve should keep it from getting to the return.

In that case isn't this device superior to conventional trap? Unbreakable.

Vapor systems are superior to trapped systems if they are properly engineered, installed, and maintained. If some idiot cranks the pressure way up or installs a very oversized boiler it all goes wrong at once. The metering to the radiators also needs to be maintained when valves are replaced or emitters are added or moved.

jumper

keith123 said:

My thoughts exactly jumper. No moving parts. Like a Hoffman loop. 

No disrespect to dead old men. Contractors are and were supported by suppliers and manufacturers who have to sell stuff to stay in business. Ideal steam heat doesn't require stinking traps or pumps. It is hermetic and has air evacuated mechanically.

mattmia2

There are plenty of new buildings and renovations to sell equipment for. Having to maintain parts for old systems is far more of a burden than a profit center. There are a few companies that have made a business out of making parts for obsolete systems but that is a small niche business.