---
product_id: 18895190
title: "20340 Mini-Vent Air Admittance Valve"
brand: "studor"
price: "£33.36"
currency: GBP
in_stock: true
reviews_count: 13
category: "Studor"
url: https://www.desertcart.co.uk/products/18895190-20340-mini-vent-air-admittance-valve
store_origin: GB
region: United Kingdom
---

# Fits 1.5" & 2" pipes Operates -40°F to 150°F Exclusive vermin protection 20340 Mini-Vent Air Admittance Valve

**Brand:** studor
**Price:** £33.36
**Availability:** ✅ In Stock

## Summary

> 🚿 Elevate your plumbing game—vent smart, live fresh!

## Quick Answers

- **What is this?** 20340 Mini-Vent Air Admittance Valve by studor
- **How much does it cost?** £33.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/18895190-20340-mini-vent-air-admittance-valve)

## 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

- • **Bug-Proof Design:** Exclusive vermin protection system keeps pests and debris out, ensuring long-term valve integrity.
- • **Odor & Gas Barrier:** Gravity-activated valve ensures zero sewer gas escape, maintaining fresh indoor air quality.
- • **Compact & Versatile Fit:** Seamlessly integrates with 1.5" or 2" piping for flexible installation.
- • **Durable ABS Construction:** Engineered to withstand extreme temperatures from -40°F to 150°F for reliable performance year-round.
- • **High Capacity Ventilation:** Supports up to 160 DFUs on branches and 24 DFUs on stacks—perfect for single or grouped fixtures.

## Overview

The Studor 20340 Mini-Vent Air Admittance Valve with ABS adapter is a compact, high-capacity plumbing solution designed to prevent water seal loss and block sewer odors without roof venting. Compatible with 1.5" and 2" pipes, it operates reliably across extreme temperatures and features an exclusive vermin protection system, making it ideal for both residential and commercial single or grouped fixture ventilation.

## Description

Product Description The unique design of the Studor Mini-Vent provides plumbing ventilation to prevent the loss of water seals in traps without the need for costly roof penetration and vent piping. Studor Mini-Vent Air Admittance Valve with ABS Adapter is a one way valve used for branch or single fixture ventilation. It protects the water trap seals and does not allow sewer gases and smells to leak into the living space. When a negative pressure in the drainage pipe occurs, the valve opens to allow the entrance of air. When the pressure is balanced the Mini-Vent closes absolutely tight, so the foul air cannot escape. Fits: 1-1/2 or 2-inch x 2.625-inch vent height x 2-inch vent diameter. ABS construction with a temperature rating of -40 to 150 deg F. From the Manufacturer The Mini-Vent is a solution for any single fixture and for a group of fixtures connected to a single branch, i.e. branch ventilation in residential/domestic and commercial applications. It can also be used with other Studor AAVs to complement larger and high rise building drainage systems and is ideal for all single fixtures: washing machines, toilets, sinks, baths and showers, etc.

Review: Works great - Works like it should. been installed for a few months now and no issues.
Review: Fixed our problem - Quality product and brand. Previously, we purchased a off brand, cheaper vent from our local hardware. That valve only worked 50% and for 6 months. This valve immediately allowed the proper air flow which resulted in drain emptying. Easy installation.

## Features

- Compact air admittance valve with ABS adapter
- Ideal for a single fixture or group of fixtures; capacity of 160 DFUs (drain fixture units) on a branch and 24 DFUs on a stack
- Creates ventilation that prevents the loss of water seals in traps; uses gravity to automatically close seal and prevent circulation of unpleasant bathroom or drain odors
- Fits 1-1/2- and 2-inch piping; temperature rating of -40°F to 150°F (-40°C to 65.6°C); complies to ANSI/ASSE 1050 and 1051; this style air admittance valve is not recognized as a mechanical vent in the International Building Code
- Exclusive vermin protection system keeps out bugs and foreign objects

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00FQEX53E |
| Best Sellers Rank | #122,262 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #8,706 in Fittings |
| Brand Name | Studor |
| Customer Reviews | 4.6 4.6 out of 5 stars (158) |
| Exterior Finish | ABS Plastic |
| Global Trade Identification Number | 00764651203400 |
| Included Components | 1 |
| Inlet Connection Size | 1.5 Inches |
| Item Dimensions | 3.5 x 3.5 x 6 inches |
| Item Type Name | Air Admittance Valve with ABS Adapter |
| Manufacturer | IPS Corporation |
| Material Type | Acrylonitrile Butadiene Styrene |
| Model Number | 20340 |
| Number of Ports | 2 |
| Outlet Connection Size | 2 Inches |
| Outlet Connection Type | NPT |
| Size | 1-1/2- or 2-Inch Connection |
| Thread Size | 2 inches |
| UPC | 764651203400 |
| Unit Count | 1.0 Count |
| Valve Type | thermostatic |

## Product Details

- **Brand:** Studor
- **Exterior Finish:** ABS Plastic
- **Global Trade Identification Number:** 00764651203400
- **Inlet Connection Size:** 1.5 Inches
- **Item dimensions L x W x H:** 3.5 x 3.5 x 6 inches
- **Manufacturer:** IPS Corporation
- **Material:** Acrylonitrile Butadiene Styrene
- **Number of Ports:** 2
- **Outlet Connection Size:** 2 Inches
- **Outlet Connection Type:** NPT

## Images

![20340 Mini-Vent Air Admittance Valve - Image 1](https://m.media-amazon.com/images/I/71xav1NOrJL.jpg)

## Questions & Answers

**Q: Why is this product listed under electronics > computers&accessories > networkingproducts > networkadapters > powerlinenetworkadapters**
A: If you plug this into your pc, it will free up hard drive admittance and the network will all speed up..  but the adaptor hasent been invented yet, guess the manufacturers have high hopes..

**Q: will the threads screw into a 1 1/2 threaded fitting?**
A: Yes, this screws directly into a 1 1/2" pipe threading. It also comes with an adapter for a 2" pipe.

**Q: what is life span for mini vent**
A: We just replaced two, both had replaced vents that were about 8 years old.

**Q: Are these suitable for exterior vent pipes?**
A: My understanding is they are only for use inside. They eliminate the need to connect new fixtures to the main stack.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by W***N on December 3, 2025*

Works like it should. been installed for a few months now and no issues.

### ⭐⭐⭐⭐⭐ Fixed our problem
*by H***K on February 14, 2025*

Quality product and brand. Previously, we purchased a off brand, cheaper vent from our local hardware. That valve only worked 50% and for 6 months. This valve immediately allowed the proper air flow which resulted in drain emptying. Easy installation.

### ⭐⭐⭐⭐⭐ Excellent and effective product!
*by S***Y on December 15, 2024*

Not need to cut a hole in your roof anymore. Never smelled anything in the past 2 years since the installation.

## Frequently Bought Together

- Studor 20340 Mini-Vent Air Admittance Valve with ABS Adapter, 1-1/2- or 2-Inch Connection
- Studor 20380 Recessed Air Admittance Valve Box and Grill
- Studor 20346 Redi-Vent Air Admittance Valve with PVC Adapter, White, 1-1/2- or 2-Inch Connection

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-24*