---
product_id: 58745756
title: "Flamco Flexvent 3/8\" Floatvent c/w shut-off valve - Automatic Air Vent 27750"
brand: "flamco"
price: "178 zł"
currency: PLN
in_stock: true
category: "Flamco"
url: https://www.desertcart.pl/products/58745756-flamco-flexvent-3-8-floatvent-c-w-shut-off-valve
store_origin: PL
region: Poland
---

# automatic air bleed valve max 120°C operating temp 3/8 inch brass thread Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750

**Brand:** flamco
**Price:** 178 zł
**Availability:** ✅ In Stock

## Summary

> 💡 Elevate your heating game with Flamco’s smart, sleek air vent solution!

## 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?** 178 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/58745756-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

- • **Effortless Air Removal:** Automatic float valve ensures continuous, maintenance-free air venting
- • **Durability You Can Trust:** Factory-tested quality with dirt-protected seal seat for long-lasting operation
- • **Compact Precision Engineering:** Sleek brass housing fits seamlessly in tight heating systems
- • **Easy Installation & Leak-Free Fit:** 3/8 inch male thread with shut-off valve for quick, secure setup
- • **Reliable High-Pressure Performance:** Operates safely up to 10 bar peak pressure for robust system stability

## Overview

The Flamco Flexvent 3/8" Floatvent with shut-off valve is a compact, brass automatic air vent designed for central heating systems. It features a 3/8 inch male thread, supports operating temperatures up to 120°C and pressures up to 10 bar, and includes a protective chamber to keep the seal seat dirt-free. Factory-tested for quality, it ensures reliable, maintenance-free air bleeding to optimize system efficiency and longevity.

## Description

Free delivery and returns on all eligible orders. Shop Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750.

## 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 |
| Best Sellers Rank | 120,450 in DIY & Tools ( See Top 100 in DIY & Tools ) 959 in Central Heating System Accessories |
| Brand | Flamco |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,226) |
| Exterior Finish | Brass |
| Inlet Connection Size | 0.38 Inches |
| Inlet Connection Type | Brass |
| Item Dimensions | 23 x 3 x 80 centimetres |
| Item Weight | 0.01 Kilograms |
| Manufacturer | Flamco |
| Material | Brass |
| Maximum Pressure | 10 Bars |
| Model Number | 27750 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 9.53 Millimeters |
| Outlet Connection Type | NPT |
| Part Number | 27750 |
| Size | R 3⁄8" |
| Specification Met | DIN |
| Thread Size | 3/8 duim |
| Thread Type | M (Manufacturer |
| Unit Count | 1.0 count |
| Valve Type | Float Valve |

## Product Details

- **Brand:** Flamco
- **Exterior finish:** Brass
- **Inlet connection size:** 0.38 Inches
- **Inlet connection type:** Brass
- **Item dimensions L x W x H:** 23 x 3 x 80 centimetres
- **Material:** Brass
- **Maximum operating pressure:** 10 Bars
- **Number of ports:** 2
- **Outlet connection size:** 9.53 Millimeters
- **Outlet connection type:** NPT

## Images

![Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 - Image 1](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 2](https://m.media-amazon.com/images/I/71KiPVoYSmL.jpg)
![Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750 - Image 3](https://m.media-amazon.com/images/I/71nYqmV8-gL.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/71xPP+-LqEL.jpg)

## Available Options

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

## Questions & Answers

**Q: do you have to drain down hot water tank to fit this valve which is replacing a blown one of the same please**
A: It all depends on your system and why / where the valve is installed etc. On my system it was (almost) at the top of the central heating radiator circuit and was completely separate from the hot water storage tank. I just needed to turn off the water supply and electric then drain sufficient water from the radiator loop so the water level and pressure fell sufficiently to allow me to safely replace the valve. I then had to restore the water level and bleed the system etc. Your central heating system is probably very different from mine, so this may not apply in your case.  Irrespective of where ithe valve is located in the circuit you will definitely need to at least partially drain your system as the valve is intended to operate under pressure. If in doubt, consult a plumber.

## Frequently Bought Together

- Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750
- LOCTITE 55, Thread Sealing Thread for Quick Seal, Thread Seal for Pipe Threads and Fittings, for Threads Made of Metal and Plastic, 1 x 160 m
- Variosan Automatic Quick Release Vent In Polished Brass, Thin Shape, With Mounting Valve 1.3 cm (1/2 ")

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pl/products/58745756-flamco-flexvent-3-8-floatvent-c-w-shut-off-valve](https://www.desertcart.pl/products/58745756-flamco-flexvent-3-8-floatvent-c-w-shut-off-valve)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-05-21*