Spirovent VJP100TM Air Eliminators, 1 in, Press, 150 psi, 270 deg F, Solid Brass

Spirotherm® Spirovent® VJP100TM Press Connection Air Eliminator – Technical Product Information

The Spirotherm® Spirovent® VJP100TM Air Eliminator is a precision-engineered hydronic system component designed for professional installation in residential and light commercial heating and cooling systems. Utilizing the patented Spirotube® coalescing medium, the unit continuously separates and removes entrained air and microbubbles from circulating fluid. Its full-flow, in-line design allows for low-turbulence operation without flow restriction, enhancing system efficiency, pump performance, and heat transfer stability. The Spirovent® VJP Series provides press-fit connection compatibility for fast and reliable field installation.

Technical Specifications

• Model Number: VJP100TM
• Manufacturer: Spirotherm® Inc.
• Product Series: Spirovent® Junior (VJP Series – Press Fit)
• Product Type: Air Eliminator, Hydronic System Component
• Connection Type: 1" Press Fit
• Material: Solid Brass Body
• Internal Mechanism: Patented Spirotube® Coalescing Medium
• Operating Pressure: 150 PSI (Standard)
• Maximum Operating Temperature: 270°F (Standard) / 360°F (HT Model)
• Flow Configuration: Straight In-Line, Full Flow Design
• Installation Orientation: Horizontal (Standard)
• Air Release Mechanism: Integral, Automatic, Patented Vent Assembly
• Service Media: Water or Water/Glycol Hydronic Solutions
• Body Finish: Machined Brass
• Connection Compatibility: Press-Fit System Connections (Copper/Press Tool Compatible)
• Available Configurations:
  • VJR – NPT Threaded
  • VJS – Sweat Connection
  • VJP – Press Fit Connection
  • VJV – Vertical Orientation
• Applicable Pipe Sizes: 3/4" to 2"
• Warranty: 20-Year Limited Manufacturer Warranty
• Compliance: Manufactured to meet hydronic and solar system design specifications

Design and Performance Features

• Patented Spirotube® coalescing element separates microbubbles and dissolved air from system fluid
• Automatic air release mechanism vents collected gases without manual intervention
• Full-flow in-line design maintains system capacity with minimal pressure drop
• Solid brass construction ensures mechanical strength and corrosion resistance
• Press connection fittings allow rapid installation using industry-standard pressing tools
• Continuous air elimination reduces noise, improves heat transfer, and protects system components
• Maintenance-free operation with integrated venting assembly

Professional Summary

The Spirotherm® Spirovent® VJP100TM 1" Press Connection Air Eliminator provides professional HVAC and hydronic contractors with a proven solution for continuous air removal in closed-loop heating and cooling systems. Its Spirotube® coalescing medium ensures highly efficient separation of entrained air and microbubbles, while the automatic venting assembly maintains system stability and performance without maintenance intervention. Constructed from solid brass for long-term reliability and rated for 150 PSI at 270°F, the VJP100TM is engineered for installation efficiency, mechanical durability, and superior air elimination performance in residential and light commercial hydronic systems.