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Author:
joea (NY)
Trying to identify (or find a replacement) for old style hot water "radiator air vent". It looks a lot like the "water hammer arrestors" basically a 1" diameter copper tube, rounded ends, with a 1/8 male fitting to thread into the radiator end and a 1/8 female end for the manual "vent" valve to screw into.
Looks a bit like this picture, but with then ends as described above.
[www.watts.com]
Edited 1 times.
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Author:
bsipps (PA)
An air elimination vent like maid o mist
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Author:
bernabeu (SC)
pick one you like that fits
[www.bing.com]
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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Author:
joea (NY)
OK, thanks.
Another question. On a "venturi" system (main header with venture T's and branches" should these vents be on
the supply or return side?
These are old American Standard "tube and fin" units with cast iron ends. I'd call them baseboard as they sit low, but they are mounted in "radiator" type sheet metal enclosures.
I could just replace them "as is" but would like to be "correct".
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Author:
joea (NY)
After a bit of wandering the internet wilds, it seems (pretty obvious now) the vent should be in the "highest" end. That may be easy enough to work out as the units are suspended by s shaped brackets to the enclosures which have several latching points. Never gave those much though before, just wherever it was convenient to hang them.
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Author:
bernabeu (SC)
in a venturi system the units should be level with vent installed downstream
however
should a unit NOT be level the vent goes on the high end
ps. the system will flow regardless of pitch BUT air rises AND too much entrapped air WILL obstruct flow
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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Author:
packy (MA)
bern, apparently you have never worked in one of the houses around here built in the 17 hundreds by fishermen.
the floor is out of level in one direction and the windows are out of level in the other direction.
the solution is to ask the homeowner "do you want the baseboard heater parallel with the floor or the window or somewhere in between?"
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Author:
bernabeu (SC)
matters not the floor and/or windows
the heater gets installed according to the HEATER'S type
for hydronic - venturi system = LEVEL
for 1 pipe steam = back pitched towards valve
for 2 pipe steam = pitched down towards trap
for hydronic pumped = pitched upwards with flow / or level
one asks the consumer how they want the COVER installed
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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