0687752581096

Model # 400-4

Internet # 202312925

Store SKU # 748457

1/8 in. Hy-Vent

$12.48 /each

Frequently Bought Together

Product Overview

The Taco Hy-Vent has become the industry standard for dependable long life service. The TACO 1/8 in. Hy-Vent can be easily serviced by unscrewing the vent cap. It is designed to purge unwanted air from the hydronic installation to help improve system efficiency.

  • Automatically purges unwanted air from the hydronic installation to help improve system efficiency
  • Attaches to the boiler, or it can be used throughout the system
  • Nickel-plated, brass-body construction
  • Operating pressure ratings of up to 250 psi
  • Note: Product may vary by store.

Info & Guides

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Specifications

Dimensions

Product Depth (in.) 
Product Height (in.) 
3.75 
Product Width (in.) 

Details

Accessory type 
Boiler Replacement Part 
Heating Product Type 
Accessory 
Heating Technology Type 
Convection 
Product Weight (lb.) 
0.5 lb 
Returnable 
90-Day 

Warranty / Certifications

Manufacturer Warranty 

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Customer Questions & Answers

5 Questions6 Answers

Customer Questions & Answers

1/8 in. Hy-Vent
1/8 in. Hy-Vent

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This question is from 1/8 in. Hy-Vent
 
2 answers

can this be used to vent air from a well system that is picking up air

This question is from 1/8 in. Hy-Vent
Asked by
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February 11, 2016
the water system that I'm working on has 500 ft under ground to the house. it does leak down after pressure is achieved. I have a check there to save the pressure and let the pump cut off. it then leaks down and fills with air. when pump comes back on it pushes that air into the house and I need to come up with a way to bleed that air
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Answers (2)

Asked by
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February 15, 2016
Answer: 
I don;t think this wold be sufficient to vent that amount of air. However I have heard of well professionals using a product called a spirovent to vent wells. Specially to vent hydrogen sulfide gas that make the water smell. I don;t know if it would work for what your need is but I would suggest you give them a call,.
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February 14, 2016
Answer: 
This unit is meant for hydronic heating systems, not wells.
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This question is from 1/8 in. Hy-Vent
 
1 answer

Suitable for use with glycol systems

This question is from 1/8 in. Hy-Vent
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May 7, 2016
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Asked by
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May 13, 2016
Answer: 
Yes it can be used with glycol. However keep in mind glycol is bad for your system. The only thing worse is a freeze up. So if you have to use gylcol use it. But remember it turns acid with age. Make sure you check it annually as it will eventually destroy your heating system from the inside out if left unchecked. I put in a generator just so I could avoid using gylcol as it destroyed my last boiler.
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This question is from 1/8 in. Hy-Vent
 
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Why does this fail and need replacing every year?

This question is from 1/8 in. Hy-Vent
Asked by
Maine
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March 7, 2016
The original relief lasted 10 years from when system was originally installed. Now I can't go more than a year and this item fails.
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Asked by
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March 8, 2016
Answer: 
This is not a relief valve this is a vent. If you are using a high quality vent on a water system and it is only lasting a year. I would guess you are losing water from your system. The water is being replaced by the automatic feed. Unfortunately the new water has oxygen in it. That oxygen is caution corosion which is destoying the vent. To prove this you can check the preasure. Then shut the automatic Read More
This is not a relief valve this is a vent. If you are using a high quality vent on a water system and it is only lasting a year. I would guess you are losing water from your system. The water is being replaced by the automatic feed. Unfortunately the new water has oxygen in it. That oxygen is caution corosion which is destoying the vent. To prove this you can check the preasure. Then shut the automatic feed and check the preasure the next day. If the preaure falls, you know you are losing water. Not all leaks produce wet spots. Often boilers will lose water and and it evaperates at the same rate. Now if you are talking about your relief valve. Please note that it is a fusable link. Once it goes off it will never seat properly again and must be replaced. So if you relief vavle is blowing off or weeping. We need to find out why. It could be that it is doing its job, so we want to find out why you built pressure. This could be caused by an aging preassure reducing valve or expansion tank. Feel free to call if you would like to discuss. Chris 978 651 3301 Read Less
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This question is from 1/8 in. Hy-Vent
 
1 answer

can this be used on steam radiators in older homes

This question is from 1/8 in. Hy-Vent
Asked by
cincinnati,oh
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October 27, 2015
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October 28, 2015
Answer: 
This vent is designed to vent air from a hot water heating system it is not appropriate for steam. Steam vents act different. As steam forms in the boiler it moves very fast to the radiator. As it moves through the pipe it pushes all the air in front of it out of the way. That air is forced out of the vent. When the steam fills the radiator the vent closes due to the heat. You don’t want steam to leak Read More
This vent is designed to vent air from a hot water heating system it is not appropriate for steam. Steam vents act different. As steam forms in the boiler it moves very fast to the radiator. As it moves through the pipe it pushes all the air in front of it out of the way. That air is forced out of the vent. When the steam fills the radiator the vent closes due to the heat. You don’t want steam to leak out of the vent as you want to use the same water over and over. As the steam gives off its heat it condenses back into water. At that time the vent also cools and opens. This allows air to reenter the system and for the steam that has now formed condensate to run back to the boiler and be reused. If you have further questions you are welcome to give me a call. Chris 978 651 3301 Read Less
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Customer Reviews

Rated 3.0 out of 5 by 6 reviewers.
Rated 1.0 out of 5.0 by Avoid if can Buy it as a temporary fix but my original one lasted 23 years, and this Taco one just rotted apart after only one year. Taco not so great anymore. June 25, 2016
Rated 5.0 out of 5.0 by Excellent vent for baseboard convectors Very easy to install. Just put a small amount of plumbers teflon pipe seal paste on the threads and hand tighten the unit...no tools needed! I purchased these to replace my old maid-o-mist air vents. After you put your system back in service, just loosen the top thumb nut to release the trapped air- you hear the air rush out and then the unit stops the flow. Then, you just hand tighten the thumb nut again. This prevents any leakage or spitting from the unit. The other reviewers wrote bad reviews because they did not know how to use these devices properly. You just loosen the top nut, let out any air (you can hear it release and internally snap shut), then tighten the nut again. The other reviewers could solve their problem by simply following these directions. Do not follow the manufacturer's recommendation..to loosen the top nut one turn and leave it that way to automatically release the air - you should tighten the top nut and only loosen it when you want to manually release any air, then tighten it so you won't get any water leakage if some dirt or scale gets inside the mechanism and allows water to get out. Always tighten the nut on top after releasing air! September 12, 2015
Rated 5.0 out of 5.0 by Perfect ! Easy to install East install. glad I bought from Home Depot great staff to help September 2, 2014
Rated 1.0 out of 5.0 by Nor durable Did not last, starts leaking at the cap within a year February 15, 2014
Rated 1.0 out of 5.0 by Leaks less than a year I went through two of these in less than a year. They leak around the air vent plastic that the cap screws on. Replaced with a Honeywell FV180 this time, hopefully this will hold up better. January 11, 2013
Rated 5.0 out of 5.0 by excellent! It's equal if not better in quality compared to o.g. mudbone. November 1, 2011
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