• No need to manually bleed radiator!
• Keeps radiators and heating systems fully heat generating and efficient
• Drains air from underfloor heating networks
• Reduces heating costs
• Avoids tenants calling out service engineers just to vent radiators

Aladdin Autovents are loved by homeowners and landlords.
They offer a stylish and efficient alternative to having to manually expel air from radiators.
Aladdin Autovents improve overall heating system efficiency. A standard radiator with just 2” of air can be up to 75% inefficient.

6mm threads.  Super easy installation--o-ring seals with no tools required!
For radiators and towel rails.
Operating pressure 16 bar @ 120 °C.
Lifetime leakfree guarantee,
5yr operating guarantee.

How the Standard mechanism works:

On the first fill, gas (air) passes quickly through the valve until water hits the mechanism. The water causes the special hygroscopic washers in the valve to expand which forces the plastic washer and its EPDM seal to seal against the bottom, shutting the valve off.

On the first fill only, it is usual to see a drop of water on the cap of the valve.
When the radiator turns on, the temperature of the Autovent raises, the water absorbed in the hygroscopic washers evaporates through the 6 holes in the cap (see table below for vent times). If in the meantime gas has built up in the radiator, the gas will slowly and silently seep through the valve mechanism until water again touches the bottom of the hygroscopic washers which will expand and shut the valve immediately. This action NLB guarantees to operate for 5 years.