HV30 Aladdin Self Bleeding Automatic Radiator Valve 1/2" BSP Single Valve

Product Information

I am thinking of installing an Aladdin automatic radiator bleed valve type HV30 but many reviewers suggest these fail after a fairly short period of operation. I have a vertical radiator that despite constant bleeding, has only ever heated very patchily since it was installed 3 years ago.

Ahhh, I have no idea what the difference between a open and a non open system An open vented system uses a cistern to fill the heating system and allow for expansion. The innovative Hydro-seal technology utilizes a ‘dual-seal positive valve closure’ which provides an extended, leak-free life.If air is trapped within the boiler this may cause pump cavitation or boiling and overheating within the heat exchanger. If air collects in the valve body, the waterline lowers, as does the float, and the valve opens to release it. This means that the valve will detect the air temperature in the room and adjust the temperature of the rail accordingly. At the other end there will be either a wheelhead valve which can be turned off by hand or a thermostatic valve which should be turned to zero.

Also it's a bit of a bind going to bleed radiators occasionally because a tenant "can't remember" how to do them, what with all the other minor jobs some of them want doing which would take them two minutes. Instead they are placed at some local high point, such as the highest point within a utility cupboard or boiler room, even though this is in a basement. Turning knob to vent on Watts FV-4 auto vents is easy RV-4 is also an anti suction device so when system water is drained for service it lets air in. Construction is of the usual cast brass housing for plumbing parts, with a threaded connection to the pipework at the base. If your system is unvented, and you have a constant problem with "air" in a rad, then i would assume that it is drawn in from the negative side of the pump.Crafted from 100% stainless steel, and finished by hand, the Sussex towel rail is designed to last a lifetime.

Easy to fit and no need for adjustment once installed the automatic radiator bleeding valve reduces corrosion and system noises and have a long and leak free life. Where possible replace the plug which the little square vent pin fits into rather than the pin itself.

QVC is not responsible for the availability, content, security, policies, or practices of the above referenced third-party linked sites, nor liable for statements, claims, opinions, or representations contained therein. Yes you are right, the fibre washer swells when wet and seals the water in, if the water level drops as when the rad has air in it, it drys and lets the air out until the water level wets the washer again. I am not very knowledgeable in this area but overpumping seems to be a factor when using separate 007's.

For more information about the specific processing based on your consent and on how QVC uses cookies and other similar technologies, please see " Cookie Policy ".By having air in your system, your heating system has to work much harder to achieve the desired temperature, resulting in higher energy consumption and increased bills. The innovative Hygroseal™ technology (patent pending) utilises a ‘dual-seal positive valve closure’ which provides an extended, leak-free life.