---
product_id: 4811295
title: "400-4 1/8-Inch-NPT Float Air Hy-Vent"
brand: "taco"
price: "£20.41"
currency: GBP
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.uk/products/4811295-400-4-1-8-inch-npt-float-air-hy-vent
store_origin: GB
region: United Kingdom
---

# Max Pressure 150 psi Sturdy Brass Cleanable Design 400-4 1/8-Inch-NPT Float Air Hy-Vent

**Brand:** taco
**Price:** £20.41
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate Your Heating Game!

## Quick Answers

- **What is this?** 400-4 1/8-Inch-NPT Float Air Hy-Vent by taco
- **How much does it cost?** £20.41 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/4811295-400-4-1-8-inch-npt-float-air-hy-vent)

## Best For

- taco enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Compatibility:** Perfect for radiators, baseboards, and more—one solution for all your heating needs.
- • **Efficient Heating Control:** Optimizes air venting for maximum heating efficiency.
- • **High-Pressure Performance:** Handles up to 150 psi, making it ideal for demanding environments.
- • **User-Friendly Maintenance:** Easily open and clean for hassle-free upkeep.
- • **Durable Brass Construction:** Built to last, ensuring reliability in your heating system.

## Overview

The Taco400-4 1/8-Inch-NPT Float Air Hy-Vent is a robust brass air vent designed for various heating applications, including radiators and baseboards, with a maximum working pressure of 150 psi. Its cleanable design ensures long-lasting performance and easy maintenance.

## Description

Product Description               The high-capacity, float-style vent can be placed either on the boiler or at the high points throughout the system. With threaded connections--.125-Inch. 0.25-Inch, 0.5-Inch and 0.75-Inch --and operating pressure ratings up to 150 psi, these brass-body, nickel-plated vents meet the system requirements of even your largest installations.                  From the Manufacturer               The high-capacity, float-style vent can be placed either on the boiler or at the high points throughout the system. With threaded connections--.125-Inch. 0.25-Inch, 0.5-Inch and 0.75-Inch --and operating pressure ratings up to 150 psi, these brass-body, nickel-plated vents meet the system requirements of even your largest installations.

## Features

- Sturdy Brass Construction
- Designed for use on hot water radiators, baseboards, convectors, radiant panels, and small unit heaters with a maximum working pressure of 150 psi
- The Taco 400 HY-Vent can be opened (top is threaded on) and cleaned.

## Product Details

- **Material:** Brass
- **Brand:** Taco
- **Item dimensions L x W x H:** 2 x 2 x 3.25 inches
- **Exterior Finish:** not_applicable
- **Inlet Connection Size:** 2 Inches
- **Inlet Connection Type:** National Pipe Tapered
- **Outlet Connection Type:** NPT
- **Maximum Operating Pressure:** 290 Bars
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.13 Inches

## Images

![400-4 1/8-Inch-NPT Float Air Hy-Vent - Image 1](https://m.media-amazon.com/images/I/61iFm6v1luL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exact Replacement
*by S***E on August 3, 2025*

The old one on my boiler bit the dust after 20 years. This was an exact replacement and works as expected.

### ⭐⭐⭐⭐⭐ Quality float
*by P***  on June 4, 2025*

The new float was easy to install and worked great.

### ⭐⭐⭐⭐⭐ Useful product for more than heating systems.
*by A***R on August 6, 2025*

Works well. Using it for venting a well filter backwash system. No more needless air in my well water.

## Frequently Bought Together

- Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent
- 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
- Watts 0342691 30 PSI Pressure Relief Valve, Bronze, 3/4" 335 M2-030

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**Shop now:** [https://www.desertcart.co.uk/products/4811295-400-4-1-8-inch-npt-float-air-hy-vent](https://www.desertcart.co.uk/products/4811295-400-4-1-8-inch-npt-float-air-hy-vent)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-23*