Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent
Key features
- •Sturdy Brass Construction
- •Maximum Pressure 150 psi
- •Maximum Temperature 240F
- •Designed for use on hot water radiators, baseboards, convectors, radiant panels, and small unit heaters with a maximum working pressure of 150 psi
- •The Taco 400 HY-Vent can be opened (top is threaded on) and cleaned.
Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent
List Price: $34.69$31.22DEALYou Save: $3.47 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 22, 2026In Stock (28)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.5
out of 5
Based on 10 reviews
5★
70%
4★
10%
3★
10%
2★
10%
1★
0%
Works like a charm.
Michelle H.✓ Verified Purchase•September 27, 2018
I installed this at the junction point of the feed manifold from my boiler to all the zones in my house, a direct replacement of a failed automatic bleed valve.
This Taco 400-4 works like a charm. Upon refilling of the system, it immediately started hissing, which is good. Overall it took about 20 minutes to purge all the air out of the system. Very impressed.
The material, construction and heft of this Taco 400-4 is quite good.
This Taco 400-4 works like a charm. Upon refilling of the system, it immediately started hissing, which is good. Overall it took about 20 minutes to purge all the air out of the system. Very impressed.
The material, construction and heft of this Taco 400-4 is quite good.
Junk. Use this instead...
mka33✓ Verified Purchase•February 9, 2018
I have really bad water (chlorine), and I go through a lot of these. They plug up and/or fail quickly, and I've had faulty ones right out of the box. I recommend the Watts FV-4M1. The Watts work better and last much longer, they're just hard to find and cost a few bucks more.
No more gurgling sounds from my radiators!
Allen S.✓ Verified Purchase•October 26, 2017
I felt compelled to write a review for this float vent. This new float vent replaced an old generic float vent ontop of my hydronic cast-iron boiler. I recall buying the old float vent from your typical home improvement chain store about 6 yrs ago. For the past few years I have been constantly trying to purge air out of my boiler system. I recall spending at least 1 and a half hours a week trying to purge out air from all of my 3 zones from their spigot valves. No matter how hard I tried, no matter how many times I completely purged my whole boiler system with a new stream of air-free water, the air bubbles still came back eventually. After I replaced the old float vent with this new 1 I bought from Amazon, I re-pressurized my boiler system and turned on all zones on my boiler system to test this new float vent. I immediately heard "hiss""hiss" "hissssss" coming from this new float vent to my amazement. It was removing air instantly. It took about 25 minutes for this new float vent to completely rid of all the air in my system. I am completely satisfied with this product. I don't have to purge out air from my boiler system ever again! No more gurgling sounds from my radiators!
Hope to get another 28 yrs out of it like the old one
Glenn✓ Verified Purchase•October 25, 2017
Exact replacement that the manual called for. Hope to get another 28 yrs out of it like the old one.
These things don't last forever but it's working so far ...
riz✓ Verified Purchase•July 30, 2017
These things don't last forever but it's working so far. Minerals in the water cause them to leak after a while.
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