---
product_id: 13803038
title: "Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve"
brand: "studor"
price: "967 kr"
currency: DKK
in_stock: true
reviews_count: 12
category: "Studor"
url: https://www.desertcart.dk/products/13803038-studor-20302-maxi-vent-3-inch-to-4-inch-air
store_origin: DK
region: Denmark
---

# Compact 3-4 inch fitting Vents up to 500 DFUs Durable ABS plastic build Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve

**Brand:** studor
**Price:** 967 kr
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your plumbing game—vent smarter, not harder!

## Quick Answers

- **What is this?** Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve by studor
- **How much does it cost?** 967 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/13803038-studor-20302-maxi-vent-3-inch-to-4-inch-air)

## Best For

- studor enthusiasts

## Why This Product

- Trusted studor brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Odor Control:** Optional replaceable carbon filter reduces unpleasant plumbing odors.
- • **Roof-Safe Design:** Eliminates costly and leak-prone roof penetrations for a cleaner installation.
- • **Max Venting Power:** Handles up to 500 DFUs on stack vents, ensuring optimal pressure balance.
- • **Certified Reliability:** Meets ASSE 10510, NSF 14, and IAPMO standards for trusted performance.
- • **Space-Smart Dimensions:** Compact 3.5 x 3.5 x 6 inches fits seamlessly in tight venting setups.

## Overview

The Studor 20302 Maxi-Vent is a high-performance air admittance valve designed for venting single fixtures, branches, or stacks up to 500 DFUs. Constructed from durable ABS plastic and certified to multiple industry standards, it eliminates the need for roof penetrations, preventing leaks and simplifying installation. Its compact size and optional carbon filter make it a top choice for modern, efficient drainage systems.

## Description

Product Description Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. 1ATD5 vents up to 500 DFUs on a stack; 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors. From the Manufacturer Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. 1ATD5 vents up to 500 DFUs on a stack; 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors

Review: As advertised - Fits and works perfectly
Review: Great product - Eliminated the need for the vent stack through the roof. Since my roof leaked at the vent stack I decided to cut stack down to attic level and have the roofers re-roof and delete stack exposure. Works perfectly.

## Features

- For use with: Venting Single Fixture, Individual Branch, Circuit Vent Or Stack Type Application Up To 500 DFU
- Material of Construction: ABS Plastic
- Standards: ASSE Performance Standard 10510 And 1051, NES-592, NSF Standard 14, IAPMO, File No C-3803, ITS Intertek Testing Services
- Package Dimensions : 5.5" L x 5.5" W x 8" H

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000NID704 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #53,918 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Diaphragm Valves |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (190) |
| Date First Available | September 9, 2006 |
| Included Components | IPS STUDOR MAXI VENT |
| Item Package Quantity | 1 |
| Item Weight | 8.8 ounces |
| Item model number | GIDDS-301050 |
| Manufacturer | Alfi |
| Material | Abs,Plastic |
| Part Number | GID-301050 |
| Product Dimensions | 3.5 x 3.5 x 6 inches |
| Size | 5-1/4 inche |

## Images

![Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve - Image 1](https://m.media-amazon.com/images/I/41EdVZ4aerL.jpg)
![Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve - Image 2](https://m.media-amazon.com/images/I/51Zq1PXutjL.jpg)

## Questions & Answers

**Q: So can this vent inside a basement with no odor? We bought a house that has zero roof vents. Can this be used in place of those?**
A: Don't think I 'd iinstall it in the basement.  It needs to be above the fixture(s)  that it vents.  I've used smaller AAVs for indivuaul fixtures and placed them under the cabinet/sink or in the wall.  The larger AAVs are desgined to handle several fixtures and replace the need for a large vent that penetrates the roof.  These I've placed in the attack (below the roof but inside the building) and have not had any problems.

**Q: How long does one of these last until it needs to be replaced? Is there a way to tell if it has failed besides escaped sewer gas smell?**
A: Package shows limited lifetime warranty. I assume when you smell sewer gasses, it has failed, but I really don't expect it to fail. All I know, is that it works and so far, I'm very pleased with the performance.

**Q: Does it come with a push-fit connector donut (wide o-ring) for connecting to inside of 4" pipe? Shown on spec sheet, but not for item.**
A: No… just the item. Fits inside 4” sch 40 PVC coupling or 4” Fernco rubber coupling

**Q: Is it acceptable to use a rubber boot?**
A: This goes INSIDE the attic. No boot needed.

## Customer Reviews

### ⭐⭐⭐⭐⭐ As advertised
*by S***L on March 16, 2025*

Fits and works perfectly

### ⭐⭐⭐⭐⭐ Great product
*by K***E on July 26, 2024*

Eliminated the need for the vent stack through the roof. Since my roof leaked at the vent stack I decided to cut stack down to attic level and have the roofers re-roof and delete stack exposure. Works perfectly.

### ⭐⭐⭐⭐⭐ Best product to keep sewer gas out.. install takes seconds
*by C***N on August 11, 2017*

The product is amazing it has a rubber gasket attached to it that fits over a 3-inch pipe or slides into a 4-inch pipe. I had a different brand put on last year when there was a lot of pressure it released a gas smell. And the other one went bad and I could not get the gas smell out of my basement that's sewer gas. I put this on yesterday came down this morning to the basement it smells fresh and clean with no sewer gas. I am excited to have this product well worth the money. I have attached the studor photo... and the competitors that does not work

## Frequently Bought Together

- Studor 20302 Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve
- Studor 20341 Mini-Vent Air Admittance Valve with PVC Adapter, 1-1/2- or 2-Inch Connection
- Oatey Sure-Vent 1-1/2 in.–2 in. 160 Branch, 24 Stack DFU Air Admittance Valve with White PVC Sch. 40 Adapter

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-04*