Best Flamco Flexvent 2026

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Last Updated - 03.02.2026

Best Choice

01

Flamco

Flamco Flexvent Super Automatic Bleed Valve, Float Valve G1/2 Inch F - 28520

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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The Flexvent seal seat is protected from dirt as the protective chamber is placed on the float
Suitable for adding glycol based antifreeze up to 50%.
Suitable for adding ethanol based antifreeze up to 30%.
Minimum/maximum operating pressure: 0.2 / 10.0 bar.

79,31 €
02

Flamco

Flamco Flexvent Top 1/2" Automatic Float Vent Quick ventilator Air separator 28515

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The relatively large air cushion at the top of each Flexvent float vent protects the valve seat from contamination, so that the Flexvent does not leak.
Suitable for adding glycol based antifreeze up to 50%.
Suitable for adding ethanol based antifreeze up to 30%.
Minimum/maximum operating pressure: 0.2 / 10.0 bar.

52,37 €
03

Flamco

Flexcon Parent

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9.4

Excellent

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Main highlights

The white 1/2 inch Flamco Flexvent H vent valve is suitable for home installations with a glycol content of up to 50%.
The extremely compact Flamco White Flexvent H bleed valve can be easily installed in systems that operate at a temperature below 90 °C (peak values up to 120 °C are tolerated) and at a maximum pressure of 6 bar (peak values up to 10 bar are tolerated)
The Flexvent seal seat is protected from dirt as the protective chamber is placed on the float. As a quality guarantee, every Flamco nozzle is tested before it leaves our factory.
The Flamco Flexvent H air intake is available in white to match the colour of modern radiators and with a 90" angle to fit directly into the radiator door.

22,80 €
04

Flamco

Flamco Flexvent Float Aerator, Quick Bleeder R1/2 27740

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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The Flexvent seal seat is protected from dirt as the protective chamber is placed on the float
The Flamco Flexvent 1/2 inch vent valve is suitable for house installations with a glycol content of up to 50%.
Thanks to its extremely compact shape, the Flexvent 1/2 inch bleed valve can be easily installed in any system that can be installed at a temperature below 90°C (with a peak of max. 120°C) and a pressure of 6 bar (with a peak of max. 10 bar).
As a quality guarantee, every Flamco nozzle is tested before it leaves our factory.

16,53 €
Value for Money

05

Flamco

Flamco Flexvent H 1/2" Float vent, Automatic Air Vent 27710

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The Flexvent top air intake features a 1/2" female threaded connection for easy installation.
The Flexvent seal seat is protected from dirt as the protective chamber is placed on the float. As a quality guarantee, every Flamco nozzle is tested before it leaves our factory.
Thanks to its compact shape, the Flexvent Top air inlet can be easily installed in any system that operates at a temperature below 120°C and a pressure of up to 10 bar.
T-Plus is the perfect solution for setting up branches or other changes to operational structures.

18,33 €
06

Flamco

Flamco Flexvent G1/2 M Automatic Quick Bleeder for Heating and Air Conditioning Systems, Easy Installation & Reliable Function, 27743

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12% Off
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

To ensure excellent quality, we check all flexvents before delivery
The water inside a system contains air pockets, which can lead to corrosion damage and a reduction in heat transfer
The air cushion in the upper housing part protects the valve seat sufficiently against dirt, so that the Flexvent does not leak
The Flexvent float bleeder can be easily installed in any system due to its small dimensions

21,00 € 23,90 €(12% Off off)
07

Flamco

Flamco Flexvent 3/8" Floatvent c/w shut-off valve - Automatic Air Vent 27750

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14% Off
8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The T-Plus is the perfect solution for setting up branches or other changes to operational structures.
The Flexvent seal seat is protected from dirt as the protective chamber is placed on the float
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 guarantee, every Flamco nozzle is tested before it leaves our factory.

14,33 € 16,76 €(14% Off off)
08

Flamco

Flamco Flexvent Top Automatic Bleed Valve, Float Valve, R 3/8 Inch, White, 28510

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The relatively large air cushion at the top of each Flexvent float vent protects the valve seat from contamination, so that the Flexvent does not leak.
Suitable for adding glycol based antifreeze up to 50%.
Suitable for adding ethanol based antifreeze up to 30%.
Minimum / maximum operating pressure: 0.2 / 10.0 bar

51,05 €
09

Flamco

Flamco Flexvent R 1/8 - R 3/8 High-Quality Automatic Quick Bleeder Efficient Air Vent for Heating Systems Easy Installation & Reliable Function - 27780

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The seat of the Flexvent sealing device is protected from dirt because the protective chamber is arranged above the float,
The Flamco Flexvent 1/8 inch - 3/8 inch bleed valve is suitable for residential facilities containing up to 50% glycol.
Thanks to its extremely compact shape, the Flexvent 1/8 inch - 3/8 inch bleeder can be easily installed in any system that can be installed at a temperature below 90 °C (with a peak value of 120 °C max) and a pressure of 6 bar (with a peak value of 10 bar max).
As a guarantee of quality, every Flamco vent is tested before leaving our production lines.

23,95 €
10

Flamco

Flamco Flexvent 89000 Automatic Bleeder 1/2 Inch

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Not suitable for steam systems and closed drinking water systems.
Max. System pressure 10 bar. Minimum System pressure of 0.2 bar. Minimum System temperature: -10 °C.
Max. System flow temperature: peak: +120 °C / duration: +90 °C.
Installation is carried out in a frost-free place and in an easily accessible place for maintenance. Do not insulate.

7,00 €