On a header-tank system: Air can enter the system through micro-gaps in joints etc, without a leak, but in some cases a leak could lead to air collecting in one radiator. In those cases fitting an Autovent might delay the identification of a leak. On such systems, NLB recommends that Autovents should be fitted to installed radiators that have a history of collecting air if no leak in the system has been identified. It provides an effective and robust product for all plumbers, maintenance engineers, water companies, housing associations and the DIY market. The EasyFit Isolator is a full-flow valve which reduces flow by just 2% (@ 5 bar 30 lit/min) so flow will be 98% of the flowrate prior to fitting the valve. 4. Is the EasyFit Isolator guaranteed?

The standard radiator tapping size for Panel Radiators and Towel Radiators (80% of market) is the ½” BSP tapping. A CenterRad Centerbrand radiator has a little well on the end of the roll top radiator facing end out from the radiator. This also uses the Micro Barlo. This valve needs no oring seal but seals on the cone end of the valve stem. The HV30 model or OEM model (Original Equipment Manufacturer) is a lower cost ½” BSP version with exactly the same mechanism inside, lasting the same amount of time. The Micro Barlo fits ‘Roll-Top’ radiators. These have a rolled over steel smooth top to the radiator panel. The left and right edges are welded seams. One model has the bleed pin facing to the wall and on a double panel a second bleed pin also faces outwards. The first time radiators fitted with Hygroseal™ Autovents are filled, the air hisses out until water hits the hygroscopic washers and then they seal (you will often see a small “bubble” of water after the first fill). If more air/gas builds up in the radiator, it will not escape until the hygroscopic washers have dried a little and have shrunk enough for gas/air to escape. The time it takes for the washers to dry and shrink varies according to system pressure, temperature and humidity.Your inside stop valve is inside your house and is normally located just after the water pipe enters the house. This is often under the kitchen sink, but can also be:

We have a Micro 7mm which has a short thread that fits the CenterRad radiator where the tapping is at 45° to the radiator. 2) How do the Autovents work?

Having problems?

Once your radiator begins to feel cold at the top, air has begun to build and the Autovent needs to be replaced. Our Autovents have a unique patented design which means at the end of the product life they will seal shut. 5) Don’t all Automatic De-aeration valves leak? For this model and all other models to manually vent, you need to unscrew the entire valve half a turn. At the end of life, you switch off the radiator valves and remove the valve. This guide should answer most questions asked regarding the Aladdin Autovents. 1) How do I find the correct sized Aladdin Autovent valve for my radiator? On a Closed, pressurised system: After the air absorbed in the water has separated, the best early indicator of a leak is a drop in pressure of the system. An Autovent should, if anything, lead to a faster drop in pressure so an even earlier indication of a leak.

b) where a radiator is higher than the water tank, in which case when the pump stops running a vacuum forms (e.g in loft conversions). You have several options if you cannot find your inside stop valve or if it's faulty and needs to be repaired.BSP is approximately 14.5mm. If you use the ¼” BSP thread for your radiator, then it will need PTFE tape fitted on the outside of the bush. There is also a circular ½” BSP valve (Antrax) which has 3 side ports that allow a U key to be used to rotate the valve and screw in/unscrew from a radiator. Fitting Aladdin Autovents to radiators helps increase efficiency by eliminating gas and air from radiators automatically. It may also take a few minutes for the water to stop running from your taps, as there will be some water left in the pipes from before you turned the water off.

Aladdin Autovents reduce the volume of air/gas in radiators and helps to maintain their thermal efficiency, thereby reducing the fuel and energy usage. Our 1/8” BSP comes with a ¼” chromed adaptor which is 1/8” BSP on the inside and ¼” BSP on the outside. This is the 1/8” BSP model. We provide a 1/8” Micro model that will fit cast Iron ‘School Type’ radiators (made in cast iron or aluminium section). BSP (British Standard Pipe) plumbing thread allows a ½” tube to pass inside the thread which approximately has a 20.8 mm outside thread on it. The inside is around 18.6 mm and inside that size a ½” 12.7mm pipe will pass. Install a permanent isolation valve called an Aladdin valve. This can be installed on hot water or cold water pipes in around 5 minutes and can be done without turning off your water.Your property will likely have several stop valves inside your home. You will likely be able to turn off your water for the room or area of your property where you have a leak, or you’re doing some plumbing. This means you can continue to use your water in the remaining rooms of your property.