Spirotherm
Spirovent Jr Air Eliminator 1" Threaded
Best air removal solution for residential and light commercial hydronic systems.
This air eliminator significantly enhances hydronic and radiant heating systems by effectively removing air from system fluid. Its patented Spirotube coalescing component ensures optimal performance and extends the lifespan of system components. Constructed from durable solid brass, it features an easy in-line installation suitable for residential and light commercial applications. A convenient 1/2" threaded tapping allows for simple expansion tank connection. This unit is backed by a robust 20-year limited warranty, providing long-term reliability.
$114.95
Owner Satisfaction
4.7
/ 5
Category Rank
3
/ 703
#3 in Furnace & Boiler Accessories
Price vs Category Average
-42%
Below average
Construction
Solid brass
/ Solid brass
Who it's for
- Homeowners seeking maximum hydronic system efficiency
- Residents wanting a quiet, peaceful home environment
- Property owners looking to protect expensive heating equipment
Who should skip it
- System owners needing comprehensive debris and sludge filtration
- Budget-conscious buyers prioritizing lower upfront costs
- DIY installers working in cramped or restricted spaces
Performance breakdown
Air Removal Efficiency
Patented coalescing technology captures micro-bubbles that standard vents often miss.
Build Quality
Solid brass construction provides professional-grade durability for long-term system reliability.
Installation Versatility
Straightforward in-line design makes retrofitting into existing hydronic systems remarkably simple.
System Longevity Impact
Effectively prevents corrosion and noise to significantly extend your boiler's lifespan.
Expansion Tank Integration
Dedicated bottom tapping streamlines the connection process for expansion tank setups.
Warranty Confidence
A twenty-year limited warranty signals exceptional trust in the unit's engineering.
Key Specs
Construction
Solid brass
Connections
1" FNPT (female threaded)
Bottom tapping
1/2" FNPT
Max. operating pressure
150 PSI
Max. operating temperature
270°F
Flow rate
10 GPM at 4 ft/sec velocity
Material
Brass
Mounting type
Inline
Know before you buy
The Spirovent Jr uses a patented Spirotube coalescing component to continuously remove trapped air from your hydronic or radiant system. By eliminating air, it helps prevent noise, corrosion, and inefficient heat transfer, which ultimately extends the lifespan of your boiler and pumps.
While the in-line design is straightforward, it requires cutting into your system's piping and draining the fluid. If you are comfortable with plumbing and soldering or threading pipe, it is a manageable project, but professional installation is recommended to ensure a leak-free seal.
Yes, the VJR100 is designed for both residential and light commercial applications. It supports flow rates up to 10 GPM, making it versatile enough for most standard home heating setups and smaller commercial loops.
Yes, it features a convenient 1/2" FNPT threaded tapping at the bottom specifically designed for an easy expansion tank connection.
The Spirovent Jr is built to withstand demanding conditions, with a maximum operating pressure of 150 PSI and a maximum temperature rating of 270°F.
The solid brass construction provides excellent resistance to corrosion and physical wear compared to plastic or thinner metal alternatives. This durability is why Spirotherm backs the unit with a 20-year limited warranty.
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