Login
Start Free Trial Are you a business? Click Here

Taco 1/8" Hy-Vent Air Vent for Water Heating Systems (MPN: 400-4) Reviews

4.7 Rating 176 Reviews
Read Plumbing Supply and More Reviews

Keep Your Water Heating System Efficient - Taco 1/8" Hy-Vent Air Vent When it comes to maintaining a reliable and efficient water heating system, the Taco 1/8" Hy-Vent Air Vent is your go-to solution. This high-capacity, float-style vent is designed to eliminate air from your heating system, ensuring optimal performance and longevity. With its robust construction and easy serviceability, this vent is perfect for both professional contractors and DIY homeowners looking to enhance their plumbing systems. Why Choose Taco Hy-Vent? Trusted by professionals across the industry, Taco has established itself as a leader in plumbing solutions. The Taco 1/8" Hy-Vent is engineered for durability and efficiency, making it a top choice for those who demand the best. Its brass-body, nickel-plated design not only meets the rigorous demands of high-pressure systems but also ensures a long lifespan, reducing the need for frequent replacements. Key Benefits of the Taco 1/8" Hy-Vent ✅ High Capacity: Effectively removes air from your heating system, preventing inefficiencies. 💦 Durable Construction: Brass body with nickel plating ensures resistance to corrosion and wear. 🔧 Easy Maintenance: Serviceable design allows for quick access to the vent cap for cleaning or replacement. 💪 Versatile Installation: Can be installed on the boiler or at high points throughout the system. ✅ Pressure Rated: Operates safely at pressure ratings up to 250 psi, suitable for various applications. Technical Specifications Material: Brass body with nickel plating Thread Size: 1/8 inch Pressure Rating: Up to 250 psi Installation Type: Straight mount with male threads Installation Complexity While the Taco 1/8" Hy-Vent is designed for straightforward installation, we recommend that it be installed by a licensed plumber or HVAC professional. This ensures proper function and compliance with local codes. If you're a DIY enthusiast, be prepared with the right tools and take your time to follow the installation guidelines carefully. Even simple installations require attention to detail to avoid potential pitfalls. What Pros & DIYers Need to Know For Pro Contractors: The Taco 1/8" Hy-Vent meets the high demands of professional job sites. Its durable construction and reliable performance make it a staple in any contractor's toolkit. You can trust that this vent will perform under pressure, saving you time and ensuring customer satisfaction. For DIY Homeowners: If you're tackling your plumbing projects, the Taco Hy-Vent is a great addition to your toolkit. Just remember, while it's designed for ease of use, having a professional install it can save you from future headaches. Make sure to have the necessary tools on hand and follow the instructions closely for the best results. Features That Stand Out ✅ Multi-Directional Flow: Install it however you need—no limitations. 💦 Corrosion-Resistant Handle: Built to withstand solvents and weather exposure. 🔧 Durable Construction: Industrial-grade durability that outlasts standard options. ✅ Quarter-Turn Lever: Instant shutoff for added safety. Don't wait until your heating system is compromised. Get the Taco 1/8" Hy-Vent Air Vent today and ensure your water heating system operates at peak efficiency! With Taco, you're investing in safety, reliability, and compliance—trusted by professionals everywhere.

Visit Product Page
I ordered this air vent to replace our old Maid-O-Mist vent, which has started to leak water and was heavily covered by mineral deposits. The product arrived exactly as shown on photo, its build quality is excellent, well worth its price and should last many, many more years.
Helpful Report
Posted 9 years ago
Between a faulty auto-fill valve and air vent, my second floor radiators would become air-locked. Replaced both and now I'm staying nice and warm! This is one of those preventative maintenance items you should replace every couple/few years.
Helpful Report
Posted 9 years ago
The installation was quick and simple. Happy with my purchase, and the product works as expected.
Helpful Report
Posted 9 years ago
works as it should. Had to change ex tank and auto fill valve and in a short time air was out of system.
Helpful Report
Posted 9 years ago
The first one they sent me was the version that's two generations old, with a more complex mechanism inside that has reliability problems. Even though I installed it carefully and bought the pressure (12psi) up very gradually by pumping up the expansion tank with a bike pump, it leaked water out the vent hole continuously. The vendor (Standard Plumbing Supply) replaced it with the latest version at no charge, no questions asked. Gotta love 'em.
Helpful Report
Posted 9 years ago
We live in the mountains where natural gas is abundant. Noticed the hot water would spurt and spit when turned on, sometimes extreme. Holding a lighter at the faucet when this occurred produced flames from the water. Decided to try this as a cheap way to stop this. On the hot water outlet side of the water heater, added a T fitting. Out of the side port, added a small length of pipe to a 90-degree fitting and then up to our hot water pipe. Straight out the top of the T, added pipe to just below ceiling and used a 90-degree fitting with a 1/8 inch female port to fit the hydro vent and plugged the other side. Put plastic tubing on the air vent and ran it to the outside of the wall. We can now turn on the hot water and no more spitting and sputtering and explosive venting from the faucet. Have to think outside the box.
Helpful Report
Posted 9 years ago
It's equal if not better in quality compared to the original Mudbone vent.
Helpful Report
Posted 9 years ago
Christopher E
Verified Reviewer
Works very well. Ordered as a replacement for Bell & Gossett valve previously ordered and returned that leaked.
Helpful Report
Posted 9 years ago