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Your cart is empty.The function of the radiator air vent is to provide a means for air to be driven out of the radiator as steam enters. At a given pressure the fill time of a radiator varies proportional to its heat capacity and inversely proportional to the venting capacity of the radiator air vent. It is possible to control the speed at which a radiator will fill with steam by installing a radiator air vent with a certain venting capacity. Used in this manner, radiator air vents are helpful in evening out the heat distribution in a building.
Eroode
Reviewed in the United States on February 10, 2025
This valve solved all my heating issues. All eight radiators working now.I wish I had found this product years ago!
Real Deal
Reviewed in the United States on July 28, 2023
The Varivalve 925005-00 Angle VARI-Valve (Heat Timer) has been a game-changer for my heating system. As a homeowner, I'm always on the lookout for ways to make my home more energy-efficient and cost-effective. The Varivalve has certainly delivered on both fronts and has become an essential part of my heating setup.First and foremost, the design of the Varivalve is brilliant. The angle variation feature allows me to easily adjust the heat output from my radiators, giving me precise control over the temperature in different rooms. This level of customization ensures that I'm not wasting energy in rooms that don't require as much heating, ultimately leading to energy savings.Installation was a breeze. The Varivalve fit perfectly into my existing radiator system without any issues. The solid build and quality construction of the valve gave me confidence that it would work seamlessly for years to come.I've noticed a significant reduction in my heating bills since using the Varivalve. The ability to fine-tune the heat output in each room has resulted in more efficient heating throughout my home. This has not only saved me money but also reduced my overall carbon footprint, which is something I'm very conscious of.Another feature I appreciate is the quiet operation of the Varivalve. Unlike some other heating system adjustments, this valve operates silently, ensuring a peaceful living environment without any distracting noises.Moreover, the heat timer functionality is a fantastic addition. I can easily set the desired temperature for specific times of the day, ensuring that my home stays warm and comfortable when needed and lowers the temperature during periods of inactivity.In conclusion, the Varivalve 925005-00 Angle VARI-Valve (Heat Timer) is a smart investment for any homeowner looking to optimize their heating system. Its efficiency, ease of use, and cost-saving benefits have made it an indispensable part of my home. I highly recommend it to anyone seeking to improve their heating system's performance while reducing energy consumption and costs.
Ravindra Moennsad
Reviewed in the United States on March 8, 2017
So I moved into a house from the 1950s being a child of the 1980s I wasn't used to steam heat. Previous owner took good care of the house but he left me with the cheap Home Depot steam valves which are made in China and when you shake them they feel like rock candy . After a few months I noticed that we heard this whistling sound in our kitchen and I realize that the steam was escaping because the valve wouldn't close. I read a lot about different types of valves holfman an other famous brands but I didn't like the idea of having to choose the size because the size of the whole depends how much Air escapes and makes your radiator heat up faster or slower . I didn't want to be put in a situation where I spent 25 bucks on a valve and the opening was too large heating up the radiator too fast and then having it fail and having steam come out of the large opening. I thought one at first and then I started to buy more and more for each radiator they're quiet they feel like very heavy lead weights they are very durable I would recommend to anyone if they hear it hissing or if they have water dripping from one of the valves just buy it . Just take a wrench try to go counterclockwise if the valve is on your left and if it's on your right turn towards you . Just make sure that the direction looks like it's counterclockwise and if you feel too much resistance try pushing back a little bit. After you remove the old valve just take some of that pipe tape use for shower heads the white stuff and wrap it around gently are used one layer just so I could feel the threads. I installed it and tightened by hand and then I realize that the valve was upside down so I tighten the rest with the wrench but not too much you will have to use a little bit of elbow grease but don't screw it all the way in. Once in a while I do here just a tad bit of a hissing sound it's not much I figure it's expected after all air have to escape but it's a nice town like the wish wish wish not the annoying sound like this teakettle going off. I can tell it's air because I put my hand next to it and I can feel the air coming out that steam. I think I have to mention is these valves can get pretty hot so you need something really durable don't settle for the Home Depot ones even though they're cheap because eventually they'll break they just can't hold up to the pressure of steam they should be banned. I know they're like $20 plus but it is the best investment I ever made
Matt F
Reviewed in the United States on November 20, 2016
These radiator air vents are great for fast venting and adjustability on single pipe low pressure steam heating systems. Bottom line: These work very well. The adjustable aperture gives homeowners like me the ability to vary the venting rate for each radiator, and more easily balance my system. The only drawback I have had is with faster venting, you tend to pick up more moisture in the steam. The vents can get waterlogged and not function properly. These vents don't drain as well as other designs, so make sure the radiators are pitched toward the supply valve and that the supply valve is wide open. Generally you can just blow the vents out if they get water in them. If you are getting a lot of water in your vents, make sure your near boiler piping is correct, and that the boiler is skimmed and clean. Dirty or surging boilers or improper piping can cause wet steam, and lead to water hammer. Sometimes these vents can get stuck due to crud and deposits. A good soak in warm white vinegar will usually get them working again. I gave 4 stars due to the fact that I had a few that stopped working after a couple of years. Overall a pretty good vent. For great tips on understanding your steam heating system, check out Dan Holohan's books like "The Lost Art of Steam Heating". This is a must-have if you own a home with steam. FYI, 3 psi is pretty high pressure for single pipe steam. If your system is up in that range, you will damage your vents. We run on 12 oz of pressure with a vapor stat in lieu of a pressuretrol. Big savings on fuel. We also have installed 2 large Gorton main vents in a manifold on each main. This greatly improved steam delivery and cut our bills by more than half.
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