---
product_id: 129773998
title: "Hydro Master Automatic Air Vent Valve 1/8 Inch Brass"
brand: "hydro master"
price: "€ 30.91"
currency: EUR
in_stock: true
reviews_count: 11
category: "Hydro Master"
url: https://www.desertcart.sk/products/129773998-hydro-master-automatic-air-vent-valve-1-8-inch-brass
store_origin: SK
region: Slovakia
---

# Handles up to 150 psi & 240°F max pressure/temp 1/8" NPT threading for universal fit Heavy-duty brass for durability & eco-friendliness Hydro Master Automatic Air Vent Valve 1/8 Inch Brass

**Brand:** hydro master
**Price:** € 30.91
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade Your Heat Game with Hydro Master – The Smart Valve Every Pro Swears By!

## Quick Answers

- **What is this?** Hydro Master Automatic Air Vent Valve 1/8 Inch Brass by hydro master
- **How much does it cost?** € 30.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/129773998-hydro-master-automatic-air-vent-valve-1-8-inch-brass)

## Best For

- hydro master enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Premium brass construction ensures long-term durability and eco-conscious reliability in any hydronic setup.
- • **Effortless Air Bleeding:** Set it and forget it—automatic venting keeps your heating system running flawlessly without manual hassle.
- • **Universal Compatibility:** 1/8" male NPT threading fits seamlessly with most residential boilers, radiators, and manifolds.
- • **Energy Efficiency Booster:** Continuous air release eliminates cold spots, optimizing heat transfer and lowering energy bills.
- • **Quick & Tool-Free Installation:** Swap out your manual valve in seconds—no special tools or expertise required, perfect for busy pros.

## Overview

The Hydro Master Automatic Air Vent Valve is a robust 1/8" brass valve designed for hydronic heating systems. It automatically vents trapped air to maintain optimal system efficiency, supports pressures up to 150 psi and temperatures up to 240°F, and features universal 1/8" NPT threading for easy installation. Trusted by professionals and homeowners alike, it reduces maintenance time and energy costs while ensuring consistent heat distribution.

## Description

Product description Material : Brass Size : 3.15 x 1.9 inches Weight : 7.2 ounces Maximum operating pressure : 150 psi Maximum operating temperature : 240°F Threaded connection : 1/8" male NPT The air vent is automatic to remove air. You don't have to worry about when it should be closed and when loosened. Automatic air vent valve can be placed either on the boiler or at the high points throughout the heating system. The air vent must be installed vertically. Great product, very effective at removing air from a hydronic heating system.

Review: Hydro Master Automatic Air Vent Valve: A Game Changer for Hydronic Systems - As a plumber who has spent countless hours bleeding air from hydronic heating systems, discovering automatic air vent valves was a revelation. The Hydro Master 1/8 Inch Brass model is a fantastic example of a simple tool that provides a significant improvement in system efficiency and homeowner comfort. Initial Impressions and Installation Right out of the box, the valve has a solid, brass construction that feels durable and well-made. The 1/8-inch threading is standard and fits perfectly into most residential hydronic radiators, boilers, and manifolds. Installation is incredibly simple—it’s as easy as unscrewing a manual bleed valve and screwing this one in its place. The process is quick and doesn't require any special tools. This simplicity is a major benefit, especially for a routine maintenance task that can often be tedious. Performance and Value This is where the product truly shines. Before using these, I would have to manually bleed each radiator, which is a messy, time-consuming job. With this automatic vent, the system essentially bleeds itself. The valve’s internal float mechanism automatically opens to release trapped air and then seals as water enters, eliminating the need for manual intervention. This not only saves me a lot of time on service calls but also ensures that the system is always operating at peak efficiency. Trapped air can cause cold spots in radiators and reduce heat transfer, leading to higher energy bills. By continuously venting air, this valve ensures consistent and even heat distribution. For homeowners who were previously manually bleeding their systems, this valve is an absolute game-changer. The small investment pays for itself in time and hassle saved, not to mention the potential reduction in energy costs. Final Verdict The Hydro Master Automatic Air Vent Valve is an excellent, reliable product that I now recommend to all my clients with hydronic systems. Its durable construction and set-it-and-forget-it functionality make it an essential component for any boiler or radiator. It performs its job flawlessly, eliminating the need for manual bleeding and ensuring the system runs smoothly and efficiently. This product is a top-tier choice for any professional looking to improve their service or any homeowner wanting a simple solution to a common problem.
Review: Air vent for Pool Filter Piping - I use these to vent air from the high spots in swimming pool system piping - improves the flow rate through the system. Works great, but one of them froze and split this winter, had to be replaced.

## Features

- Universal 1/8" auto air valve vent, suits for most heating system
- Made from heavy duty brass construction, durable and eco-friendly
- Maximum operating pressure 150 psi and maximum operating temperature 240°F
- 1/8" male NPT threaded connection
- Working great with our 1" and 1-1/4" air scoop

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PQFWWZC |
| Best Sellers Rank | #24,973 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,543 in Fittings |
| Brand | HYDRO MASTER |
| Brand Name | HYDRO MASTER |
| Customer Reviews | 4.6 out of 5 stars 660 Reviews |
| Exterior Finish | Brass |
| Inlet Connection Size | 0.13 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Manufacturer | Boro |
| Manufacturer Part Number | 692232533465 |
| Material | Brass |
| Material Type | Brass |
| Maximum Pressure | 150 Pound per Square Inch |
| Model Number | 692232533465 |
| Number of Ports | 1 |
| Outlet Connection Size | 0.13 Inches |
| Outlet Connection Type | MNPT |
| Size | 1/8” |
| Thread Size | 1/8 inch |
| Thread Type | NPT |
| UPC | 692232533465 |
| Unit Count | 1.0 Count |
| Valve Type | Air Control Valve |

## Product Details

- **Brand:** HYDRO MASTER
- **Exterior Finish:** Brass
- **Inlet Connection Size:** 0.13 Inches
- **Inlet Connection Type:** National Pipe Tapered
- **Manufacturer:** Boro
- **Material:** Brass
- **Maximum Operating Pressure:** 150 Pound per Square Inch
- **Number of Ports:** 1
- **Outlet Connection Size:** 0.13 Inches
- **Outlet Connection Type:** MNPT

## Images

![Hydro Master Automatic Air Vent Valve 1/8 Inch Brass - Image 1](https://m.media-amazon.com/images/I/61GfawJNiEL.jpg)

## Questions & Answers

**Q: Do you loosen the cap on top?**
A: Yes, you must loosen the cap for the air to vent. If you don't it has no where to vent to. Loosen cap 1/2 to full turn. don't over loosen.

**Q: can this be mounted horizontally?**
A: The air vent must be installed vertically.

**Q: Can this be used to purge air from a well water line (cold) after the pump and before it gets to the house?**
A: Yes, but it should be installed at the highest point in the line.

**Q: Does Bignell know water is water hot or cold ?**
A: No it is for steam it only works hot ..used to bleed the line of air so water flows evenly thru line

## Customer Reviews

### ⭐⭐⭐⭐⭐ Hydro Master Automatic Air Vent Valve: A Game Changer for Hydronic Systems
*by V***Y on September 24, 2025*

As a plumber who has spent countless hours bleeding air from hydronic heating systems, discovering automatic air vent valves was a revelation. The Hydro Master 1/8 Inch Brass model is a fantastic example of a simple tool that provides a significant improvement in system efficiency and homeowner comfort. Initial Impressions and Installation Right out of the box, the valve has a solid, brass construction that feels durable and well-made. The 1/8-inch threading is standard and fits perfectly into most residential hydronic radiators, boilers, and manifolds. Installation is incredibly simple—it’s as easy as unscrewing a manual bleed valve and screwing this one in its place. The process is quick and doesn't require any special tools. This simplicity is a major benefit, especially for a routine maintenance task that can often be tedious. Performance and Value This is where the product truly shines. Before using these, I would have to manually bleed each radiator, which is a messy, time-consuming job. With this automatic vent, the system essentially bleeds itself. The valve’s internal float mechanism automatically opens to release trapped air and then seals as water enters, eliminating the need for manual intervention. This not only saves me a lot of time on service calls but also ensures that the system is always operating at peak efficiency. Trapped air can cause cold spots in radiators and reduce heat transfer, leading to higher energy bills. By continuously venting air, this valve ensures consistent and even heat distribution. For homeowners who were previously manually bleeding their systems, this valve is an absolute game-changer. The small investment pays for itself in time and hassle saved, not to mention the potential reduction in energy costs. Final Verdict The Hydro Master Automatic Air Vent Valve is an excellent, reliable product that I now recommend to all my clients with hydronic systems. Its durable construction and set-it-and-forget-it functionality make it an essential component for any boiler or radiator. It performs its job flawlessly, eliminating the need for manual bleeding and ensuring the system runs smoothly and efficiently. This product is a top-tier choice for any professional looking to improve their service or any homeowner wanting a simple solution to a common problem.

### ⭐⭐⭐⭐⭐ Air vent for Pool Filter Piping
*by R***C on May 27, 2025*

I use these to vent air from the high spots in swimming pool system piping - improves the flow rate through the system. Works great, but one of them froze and split this winter, had to be replaced.

### ⭐⭐⭐⭐ IT WORKS!!!
*by R***T on July 25, 2025*

ITS BEEN IN USE FOR A WEEK & IM HAPPY FOR MORE WEEKS!!!!

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-06-01*