---
product_id: 446273247
title: "Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve"
brand: "hydro master"
price: "AR$222104"
currency: ARS
in_stock: false
reviews_count: 5
category: "Hydro Master"
url: https://www.desertcart.com.ar/products/446273247-hydro-master-0571800-1-8-inch-automatic-air-vent-valve
store_origin: AR
region: Argentina
---

# Auto air venting at 150 psi Max 240°F operating temp Heavy-duty brass build Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve

**Brand:** hydro master
**Price:** AR$222104
**Availability:** ❌ Out of Stock

## Summary

> 💡 Upgrade your heating game with Hydro Master’s seamless air venting!

## Quick Answers

- **What is this?** Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve by hydro master
- **How much does it cost?** AR$222104 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/446273247-hydro-master-0571800-1-8-inch-automatic-air-vent-valve)

## 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 heavy-duty brass construction ensures durability and eco-friendly reliability.
- • **Universal Fit:** Standard 1/8" male NPT threading fits most residential hydronic heating systems seamlessly.
- • **Effortless Air Removal:** Automatically vents trapped air to keep your heating system running flawlessly.
- • **Energy Efficiency Booster:** Eliminates cold spots by maintaining consistent heat distribution, cutting energy waste.
- • **Set-and-Forget Convenience:** No manual bleeding needed—saves time and hassle for busy professionals and homeowners alike.

## Overview

The Hydro Master 0571800 Automatic Air Vent Valve is a robust, brass-built 1/8" valve designed to automatically release trapped air from hydronic heating systems. Operating safely up to 150 psi and 240°F, it fits standard threaded connections and works flawlessly with 1" and 1-1/4" air scoops. This valve enhances system efficiency by preventing air pockets, reducing cold spots, and eliminating the need for manual bleeding—making it an essential upgrade for professionals and homeowners seeking reliable, energy-saving heating performance.

## Description

Thanks for choosing Hydro Master! 1" and 1-1/4" air scoops are available.

Review: Wonderful seaf sealing air vent, especially for sealed heating systems, that basically remves any air pockets in your pipe work, and then seals itself, when it senses any moisture. I've used a few, have NEVER failed me yet!
Review: 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.

## 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 |
| Brand | HYDRO MASTER |
| Country of Origin | USA |
| Exterior Finish | Brass |
| Generic Name | vent valve |
| Inlet Connection Size | 0.13 Inches |
| Inlet Connection Type | Flange |
| Item Weight | 191 g |
| Item model number | 692232533465 |
| Manufacturer | Boro |
| Material | Brass |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Net Quantity | 1.0 Count |
| Number of Ports | 1 |
| Outlet Connection Size | 0.13 Inches |
| Outlet Connection Type | Flange |
| Package Dimensions | 9.7 x 5.21 x 5.11 cm; 191 g |
| UPC | 692232533465 |

## Product Details

- **Brand:** HYDRO MASTER
- **Exterior Finish:** Brass
- **Inlet Connection Size:** 0.13 Inches
- **Inlet Connection Type:** Flange
- **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:** Flange

## Images

![Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve - Image 1](https://m.media-amazon.com/images/I/41T3IHSGu4L.jpg)
![Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve - Image 2](https://m.media-amazon.com/images/I/41YvVgVaxtL.jpg)
![Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve - Image 3](https://m.media-amazon.com/images/I/41hNSlHfG2L.jpg)
![Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve - Image 4](https://m.media-amazon.com/images/I/41vMiiWYX6L.jpg)
![Hydro Master 0571800 1/8 Inch Automatic Air Vent Valve - Image 5](https://m.media-amazon.com/images/I/41vaVbooupL.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

### ⭐⭐⭐⭐⭐ Review
*by M***Y on 1 May 2025*

Wonderful seaf sealing air vent, especially for sealed heating systems, that basically remves any air pockets in your pipe work, and then seals itself, when it senses any moisture. I've used a few, have NEVER failed me yet!

### ⭐⭐⭐⭐⭐ Review
*by V***Y on 24 September 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.

### ⭐⭐⭐⭐⭐ Review
*by R***C on 27 May 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.

## Frequently Bought Together

- Hydro Master Automatic Air Vent Valve 1/8 Inch Brass
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- Watts ETX-30 Non-Potable Water Carbon Steel Expansion Tank for Closed Loop Hydronic Heating System Piping, 1/2" MNPT Connection, Tank Volume 4.7 Gallons, Maximum Pressure 75 psi

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---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-27*