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1/8" Hy-Vent

SKU:400-4

Brand: Taco

Taco
Qty Price
$8.49
/ each
$81.90 / box (10 units x $8.19)
In Stock! Ships in 24-48 Hours
(1659 Available)
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Specs

System Type: Hydronic (Water)
Size: 1/8"
Material: Brass
Application: Heating
Mount: Straight
Adjustability: Non-Adjustable
Type: Float-Style
Thread Type: Male
Temperature Range (F): 140°-240°F
Max Temp (F): 240°F
Min Temp (F): 140°F
Thread Size: 1/8"
Max Pressure: 150 psi
Max Venting Pressure (PSI): 50 psi
Replaces: 400-3

Description for Taco 400-4

Taco Hy-Vent® Air Vents are simple, easy to use and install and compatible with any heating system. For best performance, use them in combination with Taco Air Scoops, which feature a 1/8" outlet on top. The vents are easily serviceable by just unscrewing the vent cap.

Taco Hy-Vents are available in a variety of styles including the Slim-Line Hy-Vent and High Pressure Hy-Vent.

With threaded connections 1/8", 1/4", 1/2" and 3/4" and operating pressure ratings up to 150 psi, these brass-body, nickel-plated vents meet the system requirements of even your largest installations.

1/8" Hy-Vent

REVIEW SNAPSHOT®

by PowerReviews
Taco1/8" Hy-Vent
 
4.8

(based on 19 reviews)

Ratings Distribution

  • 5 Stars

     

    (15)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 19 customers

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(1 of 1 customers found this review helpful)

 
5.0

Exactly what I needed

By Miss Marcy

from Bethlehem, PA

Verified Buyer

Comments about 1/8" Hy-Vent:

Bought two of these Air Release Values to replace the old ones on my oil burner heating system and hot water tank. Simple to screw right on once the old one was removed. Saved me a lot of money by doing it myself. Just an FYI, the 1/8", 1/4", 1/2" and 3/4" is the top vent width with the 1/8" being the most common for residential use.

 
4.0

Easy fix part for Weil-Mclain Boiler

By TexJeepTJ

from Evergreen, CO

Verified Buyer

Comments about 1/8" Hy-Vent:

These air vents tend to need replacement every few years as they gum up and leak (probably caused by the hard water we have up here in the mountains of CO). Easy fix - turn off the water supply to the boiler, depressurize the system just to 0 PSI via the relief valve, unscrew the old Taco air vent and replace with the new one prepped with some teflon tape. Turn back on the supply water and you're good to go (and didn't have to pay the heater/plumber service company several hundred dollars).

 
5.0

Well made, and a good value

By Robert F

from Lancaster, PA

Verified Buyer

Comments about 1/8" Hy-Vent:

I am using these in an application they are not designed for. To vent air from my well pump line. The operating pressure is slightly over 50 psi, and the temperature is only 60 degrees. Still, they work. I am using another one on a solar hot water system which is circulating antifreeze. That one has been in operation for 3 years and has worked flawlessly.

 
5.0

Replacement Part for Solar Water Heating

By David

from Goodlettsville, Tennessee

Verified Buyer

Comments about 1/8" Hy-Vent:

I used this item to replace the original air venting valve on my Reynolds Crown Top Solar water heating system.

 
5.0

Gets rid of unwanted air.

By handy handyman

from Billings Montana

Verified Buyer

Comments about 1/8" Hy-Vent:

This is a well build product that is better than anything that I have used, Also thank you PexSupply for the great service, your web site is very helpful

 
5.0

Solved leaking problems in a jiffy

By The Sign Man

from Plymouth, PA.

Verified Buyer

Comments about 1/8" Hy-Vent:

Suffered with leaking vents for some time, installed these Taco vents and no more leaks. You are able to take them apart and clean them if necessary.

 
5.0

easy to install,works well

By bob the builder

from essex county,new york

Verified Buyer

Comments about 1/8" Hy-Vent:

this vent replaced older vents which were leaking due to mineral deposits in the boiler water

 
5.0

great product last a long time

By chuck

from denver co

Verified Buyer

Comments about 1/8" Hy-Vent:

this is a durable product and gives years of service easy to install

 
4.0

make sure it floats

By eric

from Rochester, Mi.

Verified Buyer

Comments about 1/8" Hy-Vent:

1 of the last 4 I bought had a stuck float wouldn't stop pissing. Couldn't repair, had to exchange. always put a shut off under them.

 
5.0

Works great!

By Jeff P.

from Schenectady, NY

Verified Buyer

Comments about 1/8" Hy-Vent:

This Hy-Vent replaced a leaking inferior model that never worked properly. I would buy another one of these in a heart beat. This vent is installed on the air purge valve on my boiler.

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Q&A: Ask the Questions, share answers

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

5 Questions | 9 Answers
Displaying questions 1-5
  • 1/8" Hy-Vent

    Q:

    I assume there is nothing in it to limit the pressure if the cap is taken off? Will I have to drain the boiler to remove the cap and service this unit?
    Asked on 2/4/2014 by PinkyHVAC from Upper midwest frozen zone.

    5 answers

    • VERIFIED BUYER

      A:

      "I assume there is nothing in it to limit the pressure if the cap is taken off?
      TRUE! IF you get air, fine... If you get water w/o stopping, then it is probably gummed up and needs replacing. PUT / tighten the cap back on!!!!
      Will I have to drain the boiler to remove the cap and service this unit?"
      You MIGHT be able to cool system to under 105 deg.
      (Find a high outlet in the system and CAREFULLY bleed off the pressure.)
      Then possibly, do a 'quick switch' of the parts.
      You MIGHT get a bit of water still, should be minimal if system is closed all over.
      IF you are going to shut down & bleed down consider the following.
      When I am replacing / re-fitting parts on our home heating system, I think back to all the mess and problems of earlier 'adventures' in home heating repairs.
      NOW, I tend to preemptively engineer the project to the extent of providing shut-offs (ball valves) so I can replace air vents or reliefs. ( For critical "stay open" lines , such as a relief >> RED - painted handle and Lock-WIRED open ). It costs a little more, but it gives the ability to perform hot swap-outs w/o having to drain or shut down the system.
      Remember,
      Not a lot of people work on this stuff in the summertime.

      Answered on 2/4/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Do you mean the little vent cap? The big "cap" (top of unit)? or the
      whole unit?  
       
      In any case, I wouldn't think you would need to drain the
      boiler.    The float inside the unit keeps water from coming out of
      the little vent cap when there is pressure in the system.   If you
      catch air in the trap, the float then falls and the air comes out of
      the vent.   The little vent cap on top should be left very loose
      (almost off) when in operation so the air can escape.   If you close
      it tight, the air can't escape.   The only time I would ever close
      that tight would be if the unit is malfunctioning somehow and water is
      leaking out of it (this sometimes happen when these get old).   In
      that case you might need to close the cap tight temporarily until you
      can get a replacement unit.   If you're talking about removing the
      whole top of the unit for cleaning or some kind of other maintenance,
      or removing the whole unit for repair or replacement, then I would just
      power down the boiler / circulation pump (or if possible, isolate the
      fitting by closing any appropriate ball valves in the zone), then just
      bleed off enough water to bring the system pressure down to zero before
      removing it so you don't get sprayed in the face with hot water.  
      It's only an 1/8" fitting and these are usually placed near a high
      point in the system.   You shouldn't lose much, if any, water if the
      system is shut down and depressurized and you're just doing a quick
      replacement.  HTH  -Mike

      Answered on 2/4/2014 by Anonymous
    • VERIFIED BUYER

      A:

      I did not replace the hy-vent on my boiler, I replace the one above my expansion tank. When I replaced it I did not drain my system. I simply turned off the boiler and the water supply to the system. I then isolated the hy-vent as much as possible with the valves available in my system. I had minimal water loss when I removed my hy-vent. I hope this helps.
      Mark S. Grzesiakowski
      AETD Core Demo Lead
      Pratt & Whitney

      Answered on 2/4/2014 by Anonymous
    • VERIFIED BUYER

      A:

      I replace the hy-vent yearly I don't think you should attempt to service it yourself they sell for about 6-8 dollars hope this helps.

      Answered on 2/4/2014 by ZMAN from MICHIGAN
    • VERIFIED BUYER

      A:

      Indeed, there is nothing to limit the pressure. You don't necessarily need to drain the entire boiler though - if you close the auto fill valve and then open the boiler drain just enough to reduce the pressure of the water in the system, you should be able to replace the vent with only a minimal amount of water spilling out.

      Answered on 2/4/2014 by Anonymous
  • 1/8" Hy-Vent

    Q:

    have about 14 of these on different systems dating from 03-05 to 04-08 After cleaning out a couple on one system found that the plastic needle valves don't seat well enough to stop bleed by.

    Can these parts be replaced. I can't find anything that shows parts but if they aren't available it would seem a waste of money to buy these "servicable" ones over ones that are throwaway and alot cheaper. ?????????
    Asked on 3/21/2012 by 0000 from wolfeboro,nh

    1 answer

    • CUSTOMER CARE

      A:

      There are no replacement parts to this Hy-Vent, so the entire vent would have to be replaced if the unit is defective.

      Answered on 4/4/2012 by PexSupply Staff from NY
  • 1/8" Hy-Vent

    Q:

    My vent also is leaking, opened it and found fine black sediment clogging all the works. What can I use to clean it?
    Asked on 8/6/2011 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      We would recommend that you use a mild soap detergent.

      Answered on 8/8/2011 by PexSupply Staff from NY
  • 1/8" Hy-Vent

    Q:

    How do you or can you service this vent? Ours is leaking out the top of the bleeder cap. I screwed the cap tight to stop it from leaking.
    Asked on 5/12/2011 by Joel from Randall, MN

    1 answer

    • CUSTOMER CARE

      A:

      You can service this vent by removing the cover and cleaning/checking the float inside the unit.

      Answered on 5/13/2011 by PexSupply Staff from NY
  • 1/8" Hy-Vent

    Q:

    What is the difference between the 03 08 and the 04 08 valve? I have a failed valve on my hot water solar (PV) panel that is a 03 ITALY 08 and need a replacement.
    Asked on 1/4/2011 by Pat from Tampa, FL

    1 answer

    • CUSTOMER CARE

      A:

      There is no difference: they are the same valve. The different numbers represent dates of manufacture.

      Answered on 1/28/2011 by PexSupply Staff from NY
Displaying questions 1-5

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