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1924 Piping question
All - I ran across this today and it has me confused "my normal state". Why is the trap where it is and since they have a condensate line below why not trap it to it and let gravity take over? I'm sure there is an easy explanation but it has me slightly perplexed.
Can't tell what is top or bottom in the picture. Whatever way I turn it it looks bad0
Me also....however I assume the tag is hanging down by gravity?0
@JUGHNE , your smarter than me I didn't notice the tag!!!
For his sake I hope your wrong!!0
It almost looks like the trap is acting like a crossover trap, air out of the radiator trap into the return.E-Travis Mechanical LLC
Its an air vent trap as the others have said.gwgillplumbingandheating.com
Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.1
Ed, I become more aware of gravity with each passing year.0
Looks like a Webster trap and valve. We've seen this before on Webster Modulation systems where a Return Trap was not used. The drips to the wet return are probably all piped directly without traps, so they are "A" rather than "B" dimensions. And the traps are, as has been pointed out, just acting as air vents.All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
didn't see the other pipe. makes sense now.0
All - Thanks for all the information. With your help and re-reading parts of Dan's Lost Art of Steam Heat I actually understand what I'm seeing, why all the old radiators are at ceiling level in the basement and why the boiler tech is running the boiler at 12 PSIG (to get the steam back) Yes - 12.
@Steamhead Is there any good information out there on the Modulation systems? I'm going back today to do more research.
Looks like a regular swing check.
The radiators are on the ceiling so they won't fill with condensate. They need to be above the boiler water line so they will drain (unless you have a boiler feed pump or condensate pump).
Why is he running 12 psi??
Because he doesn't know any better.
If you run 12 psi without a condensate tank those basement radiators (and probably the floors above will never heat)0
Yes 12 psi sounds wrong...0
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