Varivalve Adjustable Angle Air Valve Zoom

Varivalve Adjustable Angle Air Valve

SKU:VAAV

Brand: Varivalve

Varivalve
Qty Price
$18.55
/ each
$171.50 / box (10 units x $17.15)
In Stock! Ships in 24-48 Hours
(138 Available)
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Specs

Application: Radiator Vent
Size: 1/8"
System Type: Steam
Material: Brass
Mount: Angle
Adjustability: Adjustable
Thread Type: Male
Temperature Range (F): 140°-240°F
Max Temp (F): 240°F
Min Temp (F): 140°F
Thread Size: 1/8"

Description for Varivalve VAAV

The venting capacity of radiator air vents and main line air vents used in single pipe steam heating systems has an important effect on the operation of these systems. In order to obtain a better understanding of these effects, The Center for Energy and Environment conducted experiments both in the laboratory and in the field to investigate the properties of single pipe steam air venting.

Commercially available radiator and main line air vents were tested and compared. Main line air vents in one building were replaced with open pipe orifices of different sizes, and the resulting fill characteristics of the main steam lines were observed.

The purpose of the main line air vent is to rapidly vent the relatively large quantity of air in the main lines. This allows the main lines to fill more quickly and thus reduces the time difference of steam arrival at the different risers. A larger orifice allows the air to be pushed out at a lower back pressure.

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.

Adjustable valves can be installed anywhere in your home and adjusted based on the distance from the valve to the boiler.

Varivalve Adjustable Angle Air Valve

REVIEW SNAPSHOT®

by PowerReviews
Varivalve Adjustable Angle Air Valve
 
4.9

(based on 22 reviews)

Ratings Distribution

  • 5 Stars

     

    (20)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Big difference!!!

I have an old house with a 1 pipe steam system. I had Hoffman 1A's on our radiators. They were always filling up with water, throwing the system out of whack and I...Read complete review

I have an old house with a 1 pipe steam system. I had Hoffman 1A's on our radiators. They were always filling up with water, throwing the system out of whack and I was emptying valves every day in peak heating season. I hated steam heat. These are amazing, huge venting capacity and almost never clog up. The radiators heat faster and the boiler burns for a shorter cycle (saving $$). It takes a little time to adjust them to get even steam distribution through the house. I recommend them 100%. Change all your vents out though, if you leave a few of the Hoffman's or other vents in, those radiators will fill much slower that the others (smaller vent size). 1 valve was defective, [...]

VS

Most Liked Negative Review

 

Every system is different

It makes gurgeling noises. It seems to work fine. If you have very dry steam it may be the right choice. I would test a few of those prior of buying them in...Read complete review

It makes gurgeling noises. It seems to work fine. If you have very dry steam it may be the right choice. I would test a few of those prior of buying them in bulk.

Reviewed by 22 customers

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5.0

Stopped my radiators from hissing

By distshore78

from Bayside, NY

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

This works very well and quietly. The threads are better than cheaper vents, and they are also much quieter (no clanking). If your vents are releasing steam - you need to replace it with this!

 
5.0

great product

By craiga

from Bayonne,Nj

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

I can use a Varivalve Adjustable Angle Air Valve to control the temp. in any room.

 
5.0

excellent product

By mimzy

from port Jefferson, ny

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

Prior to using this product there was insufficient heat flow to several radiators. Now the heat is more than adequate. Thank you*

 
5.0

By far the best steam bleed valve

By Paul

from Ct.

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

These valves are super quiet you don't even hear them when steam is building in radiators, even better they are variable with a manual slide adjustment to have even heating through out the house

 
5.0

Simple but very effective

By Herbie the Homebuilder

from Newport, RI

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

Don't let the little size of this product scare you. It does such a wonderful job and does what it claims. If you have steam heat then these really do help heat up the rooms faster and save energy bills.

 
5.0

The best

By Detective25

from Wyckoff, NJ

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

These valves were recommended by my heating guy...they are the best for steam systems. Just throw some teflon tape or pipe goop on the threads and screw them in. Then adjust them accordingly. Easiest to use and most reliable steam vents!

 
5.0

Great product! Best Quality Valve

By Teacher with a wrench!

from Westchester, NY

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

Great valve because its compact and efficient

 
5.0

Awesome

By Eddie

from Ozone park,ny

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

I had a problem with a radiator that wasn't heating up right away. Once I recieved this product and installed it. The radiator heated up so fast that I was amazed:).this product is just perfect:)

 
5.0

Best radiator valve ever!

By Judy the fix-it mom

from Boston, MA

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

We have a very old house with very old radiators. Many years ago a plumber gave us a couple of Varivalve air valves and they worked much better than the old ones we had been using. I hadn't been able to find them anywhere until I saw on line that Pex Supply had them. I highly recommend them to people who may have given up on ever getting their radiators to work again. They are adjustable, which also makes them much more efficient.

 
5.0

Tried and True!

By Jacqui

from Wilmette, IL

Verified Buyer

Comments about Varivalve Adjustable Angle Air Valve:

I use these on single pipe steam radiators. They have little resistance so even the radiator in the far back of the house gets toasty warm, but it allows enough control that the radiators closest to the boilers can be tweaked for comfort. This is especially important since our 1940's boiler doesn't offer much control otherwise. I'm so glad I was able to find these!

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

2 Questions | 6 Answers
Displaying questions 1-2
  • Varivalve Adjustable Angle Air Valve

    Q:

    Where should I set the valves for this situation? 3 small bedrooms upstairs, 1 large living rm/dining rm main floor. Thermostat on main floor. I am looking for a balance of heat because it's always way too warm upstairs than down. So much more than "heat rises" can explain.
    Asked on 1/30/2014 by Rick from East Brunswick, NJ

    4 answers

    • VERIFIED BUYER

      A:

      I assume you have steam heat. I don't know if the valves will help. Maybe a
      matter of having too big/many radiators upstairs and too small/few
      downstairs. You can try setting all the upstairs valves to the fully closed
      position and all the downstairs valves to the fully open position. That is
      supposed to bring that steam to the "open" radiators faster, but I have not
      noticed that much control of the heat when I've tried to change the
      openness on mine. Sorry couldn't be more help.

      Answered on 2/26/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Would help to know how the vent valves are set now. But in general you
      need to slow the venting upstairs and speed up the venting downstairs.
      In other words, the vents upstairs should be closed a bit and the vents
      downstairs opened a bit. It will take a few tries to get the balance right

      Answered on 2/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Hello. A solution to your problem could take a bit of trial-and-error and tinkering. Most issues with single-pipe steam heat have the opposite problem - upstairs rooms remain cold while first-floor rooms are warm. If you go with the Varivalve, I would try opening the vent all-the-way on the radiator on your main floor closest to your thermostat. This will cause that radiator to heat up very quickly and trigger the thermostat to stop your boiler's cycle when the set-temperature is reached. For your radiators in the three bedrooms upstairs, I would close the Varivalve vents half-way at first in order to slow down the rate at which those radiators heat up. If the bedrooms get too cold, you'll need to experiment a bit in order to get the right balance. Eventually, you'll find the right combination between changing the vent settings. Just remember...the more that you open the vent, the quicker the radiator will purge air and the faster it will heat up.

      Answered on 2/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Would help to know how the vent valves are set now. But in general you
      need to slow the venting upstairs and speed up the venting downstairs.
      In other words, the vents upstairs should be closed a bit and the vents
      downstairs opened a bit. It will take a few tries to get the balance right

      Answered on 2/1/2014 by Anonymous
  • Varivalve Adjustable Angle Air Valve

    Q:

    How do adjust for maximum heat ?
    Asked on 12/31/2013 by Rich

    2 answers

    • VERIFIED BUYER

      A:

      Hi. For this vent, simply move the slide all the way to the left for the most open setting. This will allow it to purge air at the fastest setting and for the radiator to warm up quickly. Do not use the maximum (most open) setting on radiators that are in the same room as your thermostat. You'll want those to get hot slowly in order for the radiators in the other rooms in your house to warm up first.

      Answered on 1/2/2014 by Anonymous
    • VERIFIED BUYER

      A:

      At top of the unit, their is a sliding adjustment. Open max for fastest heat flow. Be aware adjusting this to faster heat rise will slow other radiator from getting steams. Needs to balance setting for whole system to warm house up evenly.

      Answered on 12/31/2013 by Anonymous
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