Welcome to Plbg.com
Thank you to all the plumbing professionals who offer their advice and expertise

Over 698,000 strictly plumbing related posts

Plumbing education, information, advice, help and suggestions are provided by some of the most experienced plumbers who wish to "give back" to society. Since 1996 we have been the best online (strictly) PLUMBING advice site. If you have questions about plumbing, toilets, sinks, faucets, drains, sewers, water filters, venting, water heating, showers, pumps, and other strictly PLUMBING related issues then you've come to the right place. Please refrain from asking or discussing legal questions, or pricing, or where to purchase products, or any business issues, or for contractor referrals, or any other questions or issues not specifically related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups and we don't tract you. We absolutely do not sell your personal information. We are made possible by:  

Post New
Search
Log In
How to Show Images
Newest Subjects
 Identify hydronic air trap?
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.

Post Reply

 Re: Identify hydronic air trap?
Author: bsipps (PA)

An air elimination vent like maid o mist

Post Reply

 Re: Identify hydronic air trap?
Author: bernabeu (SC)

pick one you like that fits


[www.bing.com]

==============================================

"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

Post Reply

 Re: Identify hydronic air trap?
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".

Post Reply

 Re: Identify hydronic air trap?
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.

Post Reply

 Re: Identify hydronic air trap?
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

==============================================

"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

Post Reply

 Re: Identify hydronic air trap?
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?"

Post Reply

 Re: Identify hydronic air trap?
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

==============================================

"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

Post Reply





Please note:
  • Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
  • Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
  • Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
  • Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.

Search for plumbing parts on our sponsor's site:




Special thanks to our sponsor:
PlumbingSupply.com


Copyright© 2024 Plbg.com. All Rights Reserved.