---
product_id: 42108282
title: "LP Propane Gas High Capacity 3/4\" Air Mixer Valve for Fire Pit and Fireplace - Solid Brass, 300K BTU"
brand: "stanbroil"
price: "$76"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/42108282-lp-propane-gas-high-capacity-3-4-air-mixer-valve
store_origin: NZ
region: New Zealand
---

# Propane efficiency 300K BTU 3/4" NPT LP Propane Gas High Capacity 3/4" Air Mixer Valve for Fire Pit and Fireplace - Solid Brass, 300K BTU

**Brand:** stanbroil
**Price:** $76
**Availability:** ✅ In Stock

## Summary

> 🔥 Ignite Your Evenings with Style!

## Quick Answers

- **What is this?** LP Propane Gas High Capacity 3/4" Air Mixer Valve for Fire Pit and Fireplace - Solid Brass, 300K BTU by stanbroil
- **How much does it cost?** $76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/42108282-lp-propane-gas-high-capacity-3-4-air-mixer-valve)

## Best For

- stanbroil enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Friendly Burn:** Enhances propane burn efficiency, reducing soot and emissions.
- • **Unleash the Flame:** Experience a roaring 300,000 BTU output for your fire pit or fireplace.
- • **Visual Masterpiece:** Achieve a stunning flame appearance that elevates your outdoor ambiance.
- • **Precision Engineering:** Crafted with solid brass for durability and reliability.
- • **Effortless Installation:** Standard 3/4 inch NPT male threads make setup a breeze.

## Overview

The Stanbroil LP Propane Gas High Capacity 3/4" Air Mixer Valve is designed for fire pits and fireplaces, boasting a powerful 300,000 BTU output. Made from solid brass, it features 3/4 inch NPT male threads for easy installation and significantly improves propane burn efficiency, resulting in a cleaner, more visually appealing flame.

## Description

You need the Air Mixer when you using liquid propane or some other combustible gas for outdoor fire or fire pit. The liquid propane can not burn very well without the air, so in this time you need the air mixer to mix the liquid propane and the air to make fire burning well. We have different numerical value of BTU to choose. I think our Stanbroil Air Mixer will help to burn the fire well.

## Features

- Rated BTU's: 300,000 Max
- All fittings are 3/4 inch NPT male threads
- For propane (LP) only, Improves Propane burn efficency
- Results in higher quality flame appearance
- Reduces sooting normally associated with Propane

## Images

![LP Propane Gas High Capacity 3/4" Air Mixer Valve for Fire Pit and Fireplace - Solid Brass, 300K BTU - Image 1](https://m.media-amazon.com/images/I/712zAYhligL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: I installed 300k btu air mixer and getting gas blowing out of air holes?  it is installed on a 30” burner.  low flame all the way up.**
A: Im having the same issue.   I started smelling propane immediately after use and shut it off.  Checked all fittings.   When using my sniffer it's obviously coming out of the mixer holes.  I have an adjustable pressure regulator and it smells no matter where it's at.  I will most likely throw it out and call this a loss.  For what it's worth I've built a fair amount of fire tables and this is the first time I've ever had any issue.   I think it's a good idea but inevitably you're opening up a semi enclosed area to leakage which is what makes a bomb.  I'd be very careful with this and if you smell anything shut it off immediately.

**Q: Do you need to keep the stainless extension piece on or can it be threaded directly to burner without that?**
A: You do not need to use the adapter. But it does allow the shut off to screw on to it and give you clearance to keep your shut off valve away from the bottom of the bowl. For myself, I welded my mounting tab to it, so I had a comnection point to my bowl. I set the height I wanted the ring to sit. Then I tack welded my mount to the extension. Removed it all, and completed my welding and drilled my hole to bolt it into the bowl

**Q: My lp outdoor fire pit works great but i’d like a slightly larger flame. would this air mixer make my flame larger or smaller?**
A: It might make it a little bigger, but adjusting the regulator, if possible, would be your best bet. Some have a threaded cap that covers the adjustment screw.

**Q: Will this work for Australian gas bottles?**
A: I'm sorry but I don't know for sure. How ever I would think so as it goes in the gas line not at the tank.

## Frequently Bought Together

- Stanbroil LP Propane Gas High Capacity 3/4" Air Mixer Valve for Fire Pit and Fireplace - Solid Brass, 300K BTU
- Midwest Hearth Gas Fire Pit Key Valve Kit - 3/4" NPT - Flat Black
- Midwest Hearth 3/4" Whistle Free Gas Flex Line for Fire Pit - Stainless Steel (24" Long)

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**Shop now:** [https://www.desertcart.nz/products/42108282-lp-propane-gas-high-capacity-3-4-air-mixer-valve](https://www.desertcart.nz/products/42108282-lp-propane-gas-high-capacity-3-4-air-mixer-valve)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-20*