Maid O' Mist Brass Blank Orifice Threaded 5/16-32
Sometimes I find that even Maid O' Mist #4s are too big with a 0.040" orifice. Here is a source for brass #70 (5/16-32) with blank orifices, ready to drill:
Maybe with a little searching, you could come up with a #70 already drilled with sizes from #4 up to D and save the cost of an entire vent when you just need the orifice.
Happy BBQ!
Dennis53
Comments
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Can you fill the orifice hole of an orifice that is too big with solder or epoxy and drill the hole size you would prefer ?
5/16 - 32 seems to be a very uncommon thread.
National - U.S. Gas Boiler 45+ Years Old
Steam 300 SQ. FT. - EDR 347
One Pipe System0 -
you can solder up the hole and drill it to whatever size you want. that is what they do with gas orifices if they need to resize them smaller.
1 -
Also
Not sure how far it closes down.
National - U.S. Gas Boiler 45+ Years Old
Steam 300 SQ. FT. - EDR 347
One Pipe System0 -
"
"It adjusts to all 5 current Jacobus sizes."
0 -
Yes I saw that, but that does not mean it won't close down more or totally.
National - U.S. Gas Boiler 45+ Years Old
Steam 300 SQ. FT. - EDR 347
One Pipe System0 -
I'm sorry but there's no way a #4 is too large a vent.
If your radiator still heats too much, just cover it.
NJ Steam Homeowner.
See my sight glass boiler videos: https://bit.ly/3sZW1el0 -
Thank you for the link to the MOM adjustable cap. It looks like a great solution to a lot of problems and the photo makes it look like it adjusts to all the way closed.
But I like the MOM for the reason that they are fixed vents and once installed and balanced, they can't be changed.
Thanks for the advice but there is no way I am going to tell a customer to cover a radiator when a $6.00 orifice will tame an overheating radiator once and for all.
Dennis0 -
my point is the #4 is a tiny hole.
Trying to drill an even smaller hole isn’t likely to result in a noticeable difference
Maybe rotate it upside down to disable the radiatorNJ Steam Homeowner.
See my sight glass boiler videos: https://bit.ly/3sZW1el0 -
To me you don't want to slow down that radiator more, you want to speed up the rest.
National - U.S. Gas Boiler 45+ Years Old
Steam 300 SQ. FT. - EDR 347
One Pipe System
2
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