

💨 Keep your system flawless—vent smart, save energy, and stay ahead of the curve!
The Altecnic 502649 15 mm Auto Air Vent Robocal is a high-quality brass automatic air vent designed for heating and air conditioning systems. It efficiently removes trapped air to reduce noise and improve system performance, supports up to 10 bar working pressure, and features a 15mm compression connection for easy installation. Its automatic isolation function prevents water loss, making it a reliable, maintenance-friendly upgrade for modern HVAC setups.
| ASIN | B00HYDPJWU |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 124,027 in DIY & Tools ( See Top 100 in DIY & Tools ) 605 in Registers, Grilles & Vents |
| Colour | Varied |
| Customer Reviews | 4.4 4.4 out of 5 stars (112) |
| Date First Available | 20 Jan. 2014 |
| Finish | Multiple |
| Included Components | Auto Air Vent |
| Installation method | Split System |
| Item Package Quantity | 1 |
| Item Weight | 170 g |
| Item model number | 502649 |
| Manufacturer | Altecnic |
| Material | Brass |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part Number | 502649 |
| Power Source | Electric, exact source not specified |
| Product Dimensions | 25.4 x 7.62 x 7.62 cm; 170 g |
| Special Features | Air vent |
| Usage | Indoor use only |
A**R
What are they like?
Sturdy and effective, replaced old plastic ones
S**K
Great value for money
Needed to replace olive for a copper one. Everything else is brilliant and great quality.
D**D
Just works
I couldn’t get the feral off the old valve so I had to saw 15 mm of the end of the copper pipe, but it’s still the highest point in the central heating system. Fitting the venting valve was extremely easy having drained the central heating system and applied PTFE tape to the thread, went on without an issue.And the first for me it didn’t leak 🤣. Don’t forget to loosen the plastic cap slightly on the top of the valve to allow the free air to escape.
A**N
Caleffi quality
I didn't realise until I researched it, but Altecnic is now part of the Caleffi group. I needed 2 auto bleeds in a hurry, and screwfix / toolstation don't seem to keep stock. BES were only a couple of quid cheaper and couldn't deliver next day. I didn't think to look on Amazon at first, so was surprised. Arrived promptly as promised. Others have mentioned lack of instructions but I suspect these parts are only intended to be fitted by those in the trade? Anyway, am delighted with the product and service. Plumbing bits on Amazon... Who'd have thought?!
G**R
Excellent.
Got rid of my air locks quickly. You might need ptfe tape or jointing compound.
L**M
Very good service
Replacement for leaking valve.
S**N
compact and easy to install
I didn't even know what this device was until I had a similar unit fail and leaked water in our airing cupboard. The original wasn't exactly the same but this is the closest I could find. However it resolved the problem and is currently serving its purpose bleeding air off the central heating circuit.
A**I
Great
Well made and priced well, just works as it is designed to
Trustpilot
1 week ago
5 days ago