Flamco Flexvent 1/2" Floatvent c/w shut-off valve - Automatic Air Vent 27740

Q: Hello - does this connect directly to 15mm copper pipe or does it need an adaptor?

Hi, it has a 1/2" BSP male thread, so you would need an adaptor to fit it onto 15mm copper.

Q: Can I screw this straight into the top of my towel rail replacing the manual bleed valve? Will I need ptfe tape?

This type of valve isn't really designed for what you are proposing, more to remove air from whole systems. You may wish to consider one of the smaller valves specifically designed for radiators. Try "Aladdin Micro Barlo 6mm Fully Automatic Self Bleeding Radiator Valve" or perhaps have a chat with your local plumbers' merchant.

Q: what is the Product Dimensions?

Flexvent Dimensions Ø [mm]: 30 H. [mm]: 75.5 Connection R 1⁄2"

Q: Does the valve need to be fitted vertically

As the CH water lifts a plunger against gravity, if the valve was other than upright, it may not operate to its full capacity

Product ID: 52389645

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Details

Material
Messing
Brand
Flamco
Item dimensions L x W x H
23 x 3 x 80
Exterior finish
Brass
Inlet connection size
230
Inlet connection type
1 1/4 inch

🔧Compact 23x3x80 cm design

⚙️Pressure rated 10 bar max

🌡️Max temp 120°C peak

Description

⚙️ Elevate your system’s efficiency with the sleek, smart Flamco Flexvent!

BUILT TO ENDURE - Handles glycol mixtures up to 50% and pressures up to 10 bar for robust, reliable operation.
PRECISION TESTED - Factory-tested for flawless function, ensuring peace of mind with every installation.
COMPACT POWERHOUSE - Slim 1/2 inch profile fits effortlessly into tight spaces without compromising performance.
SEAMLESS AIR REMOVAL - Automatically vents air to optimize system efficiency and prevent corrosion.
CLEAN SEAL TECHNOLOGY - Innovative float chamber protects the seal seat from dirt, extending product lifespan.

The Flamco Flexvent 1/2" Floatvent with shut-off valve is a compact, durable automatic air vent designed for residential heating systems. It supports glycol mixtures up to 50%, withstands temperatures up to 120°C (peak), and pressures up to 10 bar. Factory-tested and CE certified, it features a protective float chamber to keep the seal clean, ensuring long-lasting, reliable air removal and system performance.

Specifications

Manufacturer	Flamco
Part Number	27740
Product Dimensions	23 x 3 x 80 cm; 100 g
Item model number	27740
Size	R½"
Colour	Red
Material	Messing
Item Package Quantity	1
Maximum Pressure	10 Bars
Certification	CE
Included Components	No
Batteries included?	No
Batteries Required?	No
Item Weight	100 g