CONTACT & SUPPORT
Live Chat: Online Now
0
CART
'/%3E%3C/svg%3E)
Hover image to zoom
3/4" Big Mouth Main Air Vent
 --%3E %3Csvg version='1.1' id='Fill' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23F15C02' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
Hover image to zoom
$158.88 each
In Stock
Get 9 Tue, Jun 16
Order by today, receive Tuesday
MANUALS (1)
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days
Product Highlights
–
3/4"
Description
–
The Barnes & Jones “Big Mouth” vent is a thermostatic main vent designed for maximum evacuation of air and non-condensable gases from low- pressure steam systems. Available in 3/4" NPT (standard) and 1/2" NPT (special order). Recommended install at 8"-10" above the steam piping and 12" from the end of the steam main. Cross-over traps installed in the horizontal position
Features:
Specifications:
Features:
- Large Air Venting Capability
- Factory Calibrated & Tested
- Bronze Body, Forged Brass Cover, Union Nut & Tailpiece
- Piping Pattern: Vertical (Air Vent) application
Specifications:
- 3/4" NPT
Specs
–
| Size: | 3/4" |
|---|---|
| Application: | Main Vent |
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
You May Also Need
Product Reviews
4.86 out of 7 reviews
100% would recommend this product
5 star
86%
4 star
14%
3 star
0%
2 star
0%
1 star
0%
Customer Images
Showing 1-7 of 7 reviews
 --%3E %3Csvg version='1.1' id='With-RB' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23FBC8B4' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
I hope it works.
I haven't installed it yet, but the box was a little beat up and the vent had some nicks on it like it might have been previously installed.
Mike
Queens ny
4 months ago
Was this review helpful to you?
Works perfectly as a main air vent for steam boilers.
It is quiet, and gets the air out efficiently!
Ryan H.
Glen Rock, NJ
8 months ago
Verified Buyer
Was this review helpful to you?
saves money all winter long thank you
works good
jb
11234
4 years ago
Verified Buyer
Was this review helpful to you?
Very Good Product
Quality built...
Marco
Plymouth, MA
4 years ago
Verified Buyer
Was this review helpful to you?
Best you can buy
A must for steam heat systems. Better than Gorton#2. Great setup.
Mike
Williamsport,PA
5 years ago
Verified Buyer
Was this review helpful to you?
What every steam system is missing
I now have the fastest steam heat in the land... along with everyone else that has installed one of these on a system.
adamfar
Schenectady, NY
6 years ago
Verified Buyer
Was this review helpful to you?
Much faster main venting -- GREAT buy
I have two venting my mains and my boiler is not working as hard. Much more efficient than the Hoffmans these replaced.
'Ol Man
New Jersey
6 years ago
Verified Buyer
Was this review helpful to you?
Free Shipping
On orders over $99
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Shipping PolicyEasy Returns
Returning items is as simple as 1-2-3
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.
Return Policy