Aladdin Autovent 1/2 BSP Chrome HV30C (2 Pack) Aladdin Autovents automatically bleed air and improve efficiency of radiators, heating systems and underfloor heating networks. No need to manually bleed radiators Keeps radiators and heating systems fully heat generating and efficient No gas = reduced corrosion = extended component life Drains air from underfloor heating networks Keeps the radiators hot to the top Save heating and energy costs by optimising radiator efficiency Avoids tenants calling out service engineers just to vent radiators Aladdin Autovents are loved by homeowners and landlords. Specification: - Size - 1/2" - for radiators, towel rails and UFH. - Operating pressure 16 bar @ 120 °C. - Lifetime leakfree guarantee. - 5yr operating guarantee. Benefits Aladdin Autovents save energy, keeps radiators hot to top,reduce corrosion and system noise, and dispense with the need for radiator keys. Landlords like them: As they reduce the risk of damage caused to systems by tenants