---
product_id: 407959556
title: "Flamco Flexvent 3/8\" Floatvent c/w shut-off valve - Automatic Air Vent 27750"
brand: "flamco"
price: "338 Lei"
currency: RON
in_stock: true
reviews_count: 5
category: "Flamco"
url: https://www.desertcart.ro/products/407959556-flamco-flexvent-3-8-floatvent-c-w-shut-off-valve
store_origin: RO
region: Romania
---

# Withstands pressure up to 10 bar peak Operates safely up to 90°C (peak 120°C) 3/8 inch male thread for seamless integration Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750

**Brand:** flamco
**Price:** 338 Lei
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your heating system flawless with Flamco Flexvent – the silent air eliminator!

## Quick Answers

- **What is this?** Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 by flamco
- **How much does it cost?** 338 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/407959556-flamco-flexvent-3-8-floatvent-c-w-shut-off-valve)

## Best For

- flamco enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable brass construction tested for quality and leak resistance
- • **Clean & Protected:** Float seal shielded from dirt by protective chamber for reliable performance
- • **Compact Powerhouse:** Ultra-compact brass housing fits tight spaces effortlessly
- • **Pressure & Temp Ready:** Handles up to 6 bar operational pressure and 90°C with peaks beyond
- • **Precision Air Bleeding:** Automatic float vent ensures continuous, maintenance-free air removal

## Overview

The Flamco Flexvent 3/8" Floatvent with shut-off valve is a premium automatic air vent designed for HVAC systems. Featuring a compact brass body, it fits easily into tight spaces and operates reliably under pressures up to 6 bar (peak 10 bar) and temperatures up to 90°C (peak 120°C). Its float mechanism automatically bleeds trapped air, improving system efficiency and longevity. Tested for quality and durability, it’s the go-to upgrade for professionals seeking leak-free, maintenance-light air venting solutions.

## Description

Flamco Flexvent R3/8 Float Bleeder Quick Bleeder Thermostatic Valve Flexvent Red 27750

Review: Purchased this to replace the old barrel design plastic air vent on my central heating system that was leaking. It took considerably more effort to bleed and refill the system (and getting rid of the subsequent air locks), than to fit this. A couple of layers of white plumbers tape, and it fitted perfectly without any leaks. It is clearly better built than the plastic valve as well, and operates much better. Although it doesn't come with any instructions, if you download the Flamco manual it recommends that you loosen the cap before filling the system and tighten afterwards. The location of the valve is critical as well, it should be on the highest point of the system after the water pump to prevent air being drawn into the system. While not a "Silver bullet" for a central heating system with an airlock issue, the Flamco was not designed to be that. There are many reasons for airlocks occurring in a domestic CH scenario, and an airvent valve may or may not be the solution. If you purchase it as a replacement part with this in mind, you won't go wrong.
Review: Prima ontluchter voor onze boiler en met een nette prijs

## Features

- Automatic bleed valve with very compact br housing and 3/8 inch male thread.
- The T-Plus is the perfect solution for setting up branches or other changes to operational structures.
- Thanks to its extremely compact shape, the Flamco Flexvent 3/8 inch valve can be easily installed in any system that can be installed at a temperature below 90°C (with a tip of max. 120°C) and a pressure of 6 bar (with a peak of max. 10 bar).
- As a quality , every Flamco nozzle is tested before it leaves our factory.
- The Flexvent seal seat is protected from dirt as the protective chamber is placed on the float

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0042ZQGKM |
| ASIN  | B0042ZQGKM |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #96,532 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8,745 in HVAC |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,187) |
| Customer reviews | 4.6 4.6 out of 5 stars (1,187) |
| Date First Available | 12 October 2010 |
| Date First Available  | 12 October 2010 |
| Is Discontinued By Manufacturer  | No |
| Item Package Quantity | 1 |
| Item Weight | 10 g |
| Item model number | 27750 |
| Item model number  | 27750 |
| Manufacturer | FLAMCO |
| Manufacturer  | FLAMCO |
| Material | Brass |
| Maximum Pressure | 10 Bars |
| Part number | 27750 |
| Power source type | Wired |
| Product Dimensions | 23 x 3 x 80 cm; 10 g |
| Product Dimensions  | 23 x 3 x 80 cm; 10 g |
| Size | R 3⁄8" |
| Special Features | Energy Efficient |
| Specification met | DIN |

## Product Details

- **Brand:** Flamco
- **Exterior finish:** Brass
- **Inlet connection size:** 0.38 Inches
- **Item dimensions L x W x H:** 23 x 3 x 80 centimeters
- **Material:** Brass

## Images

![Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 - Image 1](https://m.media-amazon.com/images/I/7113GQ8aAOL.jpg)
![Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 - Image 2](https://m.media-amazon.com/images/I/712Kkf4x-aL.jpg)
![Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 - Image 3](https://m.media-amazon.com/images/I/71KiPVoYSmL.jpg)
![Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 - Image 4](https://m.media-amazon.com/images/I/71kukjB-eUL.jpg)
![Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 - Image 5](https://m.media-amazon.com/images/I/71nYqmV8-gL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***G on 4 October 2020*

Purchased this to replace the old barrel design plastic air vent on my central heating system that was leaking. It took considerably more effort to bleed and refill the system (and getting rid of the subsequent air locks), than to fit this. A couple of layers of white plumbers tape, and it fitted perfectly without any leaks. It is clearly better built than the plastic valve as well, and operates much better. Although it doesn't come with any instructions, if you download the Flamco manual it recommends that you loosen the cap before filling the system and tighten afterwards. The location of the valve is critical as well, it should be on the highest point of the system after the water pump to prevent air being drawn into the system. While not a "Silver bullet" for a central heating system with an airlock issue, the Flamco was not designed to be that. There are many reasons for airlocks occurring in a domestic CH scenario, and an airvent valve may or may not be the solution. If you purchase it as a replacement part with this in mind, you won't go wrong.

### ⭐⭐⭐⭐⭐ Review
*by G***D on 9 November 2025*

Prima ontluchter voor onze boiler en met een nette prijs

### ⭐⭐⭐⭐⭐ Review
*by J***O on 23 October 2025*

El producto llegó en la fecha prevista y en buen estado.

## Frequently Bought Together

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-10*