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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
(1215 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
 
4.6

(based on 27 reviews)

Ratings Distribution

  • 5 Stars

     

    (21)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

96%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Works just as it should

I used this Hy-Vent to replace a manual air bleeder valve on the baseboard of my hydronic system. Works great at removing air during system startup and periodically throughout the heating season. I like...Read complete review

I used this Hy-Vent to replace a manual air bleeder valve on the baseboard of my hydronic system. Works great at removing air during system startup and periodically throughout the heating season. I like the positive shut-off cap. It gives me comfort knowing this won't be open unless I want it open. So far so good, no leaks and was a drop-in replacement for the old valve which the key was missing for and the square nut was stripped off of from previous owners using pliers on to open/close the valve.

VS

Most Liked Negative Review

 

Prone to Leakage

I install quite a number of these vents. They perform rather well, but most of them start leaking after a year or two. I have tried most competitive products and haven't found anything...Read complete review

I install quite a number of these vents. They perform rather well, but most of them start leaking after a year or two. I have tried most competitive products and haven't found anything better. They are inexpensive, so it is best to buy and extra one and have a spare.

Reviewed by 27 customers

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5.0

Its the customer service

By Handy Homeowner

from Ferrysburg, Mi

Verified Buyer

Comments about 1/8" Hy-Vent:

It's an air vent. No big deal. But what makes it great is the customer service supply house gives. They weren't sure of the model that would be compatible with my indirect water heater so they contacted the manufacturer. They followed up with an email and a link to the part I needed. 6 stars for you customer service. You get "customer service."

 
5.0

good HD vent

By george350

from suffolk co. ny

Verified Buyer

Comments about 1/8" Hy-Vent:

perfect!

 
3.0

Prone to Leakage

By Big Shrub

from Pennsylvania

Verified Buyer

Comments about 1/8" Hy-Vent:

I install quite a number of these vents. They perform rather well, but most of them start leaking after a year or two. I have tried most competitive products and haven't found anything better. They are inexpensive, so it is best to buy and extra one and have a spare.

 
1.0

Used to be the best

By CP

from Philadelphia, PA

Verified Reviewer

Comments about 1/8" Hy-Vent:

I've had nothing but trouble with them leaking out the top. They redesigned them internally and they went from metal to plastic. Since this change they have become unreliable.

 
5.0

As Promised

By docnuss

from Traverse City

Verified Buyer

Comments about 1/8" Hy-Vent:

Quick Shipping. Product exactly as described.

 
5.0

Quality, expected performance.

By Jack Rabbit

from Virginia

Verified Buyer

Comments about 1/8" Hy-Vent:

Replaced an old crusted and corroded vent w/ this one. No more weeping, leaks, or small puddles of water. Easy to replace.

 
5.0

Great vents

By Griffin

from Marion, IL

Verified Buyer

Comments about 1/8" Hy-Vent:

These vents replace some cheap brass vents. I did not have any problems with leaking after I installed them and they vented air out of the system right away. Supply House completed the order quickly and shipped them to me right away.

 
5.0

Good product

By Techie

from Kankakee, IL

Verified Buyer

Comments about 1/8" Hy-Vent:

I used this vent on my home hot water heating system, to replace one that was leaking. I think the nickel plating will keep it from corroding. It is working fine.

(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).

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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.

7 Questions | 17 Answers
Displaying questions 1-7
  • 1/8" Hy-Vent

    Q:

    What purpose does the small metal flap that extends from the bottom of the fitting serve? Should it be removed before installation?
    Asked on 1/13/2015 by Bob from Cheboygan, MI

    4 answers

    • VERIFIED BUYER

      A:

      I'm not sure what he is talking about because I don't have a fitting to
      look at. How this valve works is there is a float inside that collects air
      and the float drops and lets the air out. There may be a tong of some type
      in the bottom to keep everything aligned and should not be removed or
      harmed in any way.

      Answered on 1/13/2015 by Anonymous
    • VERIFIED BUYER

      A:

      The flap protrudes from the ID of the fitting.
      I don't know the purpose, but don't trim it off. Just install it into the riser.

      Answered on 1/13/2015 by Anonymous
    • VERIFIED BUYER

      A:

      No! That flap is part the mechanism that detects and vents gases in the line.
      Sent from my iPhone

      Answered on 1/13/2015 by Anonymous
    • CUSTOMER CARE

      A:

      bubble breaker, NO.

      Answered on 1/14/2015 by Supplyhouse Staff from New York
  • 1/8" Hy-Vent

    Q:

    After I install this by simply screwing it into the top of the scope above my pressure tank, is there anything else i need to do before opening up all the values again? Does the little screw on top of this Vent need to be tight or loose?
    Asked on 12/3/2014 by ralph from NJ

    4 answers

    • VERIFIED BUYER

      A:

      I keep the top cap loose to allow the air to escape. I think if you tighten it, then it will not be able to vent the air. A few drops of water is normal on my system.
      Sent from my iPhone

      Answered on 12/4/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Tighten the screw, then back it off about a half a turn.

      Answered on 12/3/2014 by Anonymous
    • VERIFIED BUYER

      A:

      This has a float in it that lets the air out automatically, so as long as
      it is not leaking fluid (too loose) it should not be tightened, it should
      be loose.

      Answered on 12/3/2014 by Anonymous
    • VERIFIED BUYER

      A:

      A little loose.

      Answered on 12/3/2014 by Anonymous
  • 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 1-7

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