🔥 Keep your radiators hot and your system flawless — the smart choice for savvy pros!
The Flamco Flexvent H R1/2 is a nickel-plated, automatic air separator designed for heating and air conditioning systems. Featuring a compact white brass housing with a 1/2 inch male BSP thread, it efficiently removes trapped air to optimize heat transfer and prevent corrosion. Rated for temperatures up to 90°C (peak 120°C) and pressures up to 6 bar (peak 10 bar), it’s ideal for domestic installations with glycol content up to 50%. Factory-tested for quality, it seamlessly integrates with modern radiators, ensuring reliable, maintenance-free performance.
| ASIN | B00YHUOVEU |
| Best Sellers Rank | 524,974 in DIY & Tools ( See Top 100 in DIY & Tools ) 4,621 in Central Heating System Accessories |
| Brand | Flamco |
| Connector Type | Male 1/2" |
| Country of Origin | Netherlands |
| Customer Reviews | 4.6 out of 5 stars 1,521 Reviews |
| EU Spare Part Availability Duration | 2 Years |
| Exterior Finish | Brass |
| Exterior finish | Brass |
| Included Components | 1 |
| Inlet Connection Size | 51 Millimeters |
| Inlet Connection Type | 50.8 mm |
| Inlet connection size | 51 Millimeters |
| Inlet connection type | 50.8 mm |
| Item Dimensions | 51 x 51 x 70 centimetres |
| Item Type Name | Flamco Flexvent H R1/2 27711 Radiator Bleeder Automatic Float Fan Quick Bleeder Thermostat Valve Flexvent Ventilation White |
| Item Weight | 140 Grams |
| Item dimensions L x W x H | 51 x 51 x 70 centimetres |
| Manufacturer | Flamco |
| Material | Brass |
| Maximum Pressure | 6 Bars |
| Model Number | 27711 |
| Number of Ports | 2 |
| Outlet Connection Size | 12.7 Millimeters |
| Outlet Connection Type | FNPT |
| Size | R½" |
| Specification Met | CE, ISO 9001 |
| Thread Size | R1/2 |
| Thread Type | BSP |
| Unit Count | 1.0 Count |
| Valve Type | Quick bleeder |
G**N
I tried the rest then tried the best!
For many months I've had problems with air collecting in the bathroom radiator and tried auto air vents (Aladdin) without success. However, I fitted this product to the radiator yesterday and woke up this morning to a radiator as hot as all the others and no air present. It may be a tad more expensive then the other radiator vents available on the market but false economy if you go for the cheapest like I did and it doesn't work. This was well worth the money!
M**T
Actually works
Have tried a few different types and this one actually works perfectly
Trustpilot
5 days ago
3 days ago