PlumbingSupply.com offers auto vents, air admittance valves and vents in various styles and installation types.
We have the air admittance valves, vents and auto vent that you need.

Air Admittance Valves by STUDOR®
	These air admittance valves feature: Pressure sensitive valve Opens upon fixture discharge Admits air into drain, waste and vent systems Closes to prevent foul air inside Can be used as individual, branch, circuit or stack vent Expands architectural design limits Reduces the number of fire-stopping applications Exclusive vermin protection system Limited lifetime warranty for replacement of defective valves Should not be exposed to outdoor elements Considered "the standard" by some No roof penetration NSF Standard 14 ASSE 1051, 1050 rated IAMPO Classified Marking
Mini-Vent - will vent up to 24 DFUs on stack - click for dimensions Price & Quantity Mini-Vent® for 1 1/2" or 2" pipe - each $27.95 Mini-Vent® for 1 1/2" or 2" pipe - 6 ea. (CASE QTY) $157.95 Mini-Vent® for 1 1/2" and 2" pipe - with protective cover $29.95 Mini-Vent® for 1 1/2" and 2" pipe - 6 ea. (CASE QTY) with protective cover $168.95   Maxi-Vent - will vent up to 500 DFUs on a stack - click for dimensions Price & Quantity Maxi-Vent® for 3" or 4" pipe (vent stack) - each $39.95 Maxi-Vent® for 3" or 4" pipe (vent stack) - 6 ea. (CASE QTY) $227.95 NOTE: For 3" vent, a hubless coupling #NH30 will be needed - Or -

STUDOR® Maxi-CAP for Maxi-Vents shown above
	The STUDOR® MAXI-CAP is specifically designed to protect MAXI-VENTS® from damaging UV rays and temperature extremes when installed outdoors. Prior to installing a Maxi-Vent, Maxi-Cap can be painted to match roof color for aesthetics. Click here for dimensions
Description Price & Quantity Maxi-Cap™ UV protective cap for Maxi-Vents $19.95 - Or -

Multi-Purpose* Recess Box by Studor® For Mini-Vent
Mini-vent inside recess box	Mini-vent inside recess box with grill cover
The Mini-Vent may be installed inside or outside using the Multi-purpose Recess Box. It has "cut-outs" to allow in-wall installation on 1-1/2", 2", and 3" pipes. This multi-purpose recess box features: Allows in-wall mounts Outdoor use (side-wall venting) Alternative to venting through the roof * May be used as a washing machine box
Description Price & Quantity Studor® Multi-Purpose Recess Box with grill and screws - for Mini-Vent $18.95 - Or -

How Studor® Air Admittance Valves Work
When a plumbing fixture is operated and water drains out of the system, negative pressure causes the valve to open, allowing air to enter as needed to equalize the pressure and protect trap seals from siphonage. When the flow stops, gravity closes the valve, preventing the escape of sewer gases through the valve.

PVC & ABS Air Admittance Valves (AAV's) by Ayrlett
Pressure sensitive valve Opens upon fixture discharge Admits air into drain, waste & vent system Closes to prevent foul air inside Can be used as individual, branch, circuit or stack vent Expands architectural design limits Reduces the number of fire-stopping applications Limited lifetime warranty for replacement of defective valves Should not be exposed to outdoor elements No roof penetration Reference to model plumbing codes IPC 2003, IRC 2003, BOCA 1993 UPC 301.2, AM&M 2003		← Fits inside 2" fitting or over 1-1/2" pipe
		← 1-1/2" Slip x 1-1/4" Female Pipe Thread
		← 1-1/4" Male Pipe Thread
		← Fits inside 2" pipe or over 1-1/2" pipe

Description	Price & Quantity
PVC - AAV - 2" - 1-1/2" with 2" - 1-1/2" solvent x 1-1/4" male threaded adapter	$24.95
ABS - AAV - 2" - 1-1/2" with 2" - 1-1/2" solvent x 1-1/4" male threaded adapter	$24.98

Order 6 or more of the PVC or ABS AAV's for greater savings

- Or -

Sure-Vent® Air Admittance Valves by Oatey®
click here to view larger image	This air admittance valve features: Pressure sensitive valve Opens upon fixture discharge Admits air into drain, waste and vent systems Closes to prevent foul air inside No roof penetrations NSF compliance listing to NSF Standard 14 Glues into both 1-1/2" and 2" PVC (and threads into 2") ANSI/ASSE 1050, 1051 rated for 1-1/2" thru 4" diameter Handles up to 15 psi positive pressure Does not need cold weather protection Should not be exposed to outdoor elements Manufacturer recommends at least one vent stack to open air Not as large as the Studor® Maxi-Vent® (above)
Description Price & Quantity Sure-Vent® each $28.95 Sure-Vent® 6 ea. (CASE QTY) $155.95 - Or -

1-1/2" Auto Trap Vent
	This auto trap vent features: Generally used in mobile homes, rv's, and trailers (not code in many areas for homes) Used in places where non-mechanical venting is impossible to install Operates mechanically with a spring and rubber diaphragm Some call this mechanical vent a "check vent."
Description Price & Quantity 1-1/2" Auto Trap Vent $3.79 - Or -

STUDOR® Maxi-Filtra™
	The STUDOR® Maxi-Filtra™ operates as a two way vent, which filters air in both directions. Its active carbon filter is designed to eliminate bad odors produced by the plumbing drainage system. The Maxi-Filtra™ is for outdoor use only, particularly for use with septic systems, but can also be installed on existing open vent pipes and in systems in which air admittance valves (AAVs) are installed.
This vent pipe filter features: Can be installed vertically or horizontally Outdoor use only Contains a carbon filter that can last up to two years Fits 3" (see note below) or 4" pipe For 3" vent, a hubless coupling #NH30 will be needed Not sure what size pipe you have? Click here for our pipe size info page
Description Price & Quantity Maxi-Filtra™ air vent filter for 3" or 4" pipe Order 6 or more for greater savings! $44.95 Replacement cartridge for Maxi-Filtra Studor Order 6 or more for greater savings! $12.49 NOTE: For 3" vent, a hubless coupling #NH30 will be needed - Or -

We recommend plumbing your vents to the outside per your local codes.
Using the above-mentioned vents may not be code approved in all areas.

We hope that we have helped you on this page with air admittance vents, valves and auto vents,
and thank you for helping to make PlumbingSupply.com the most famous Internet plumbing supplier.