1-1/4" Threaded, Spirovent Jr Air Eliminator


Brand: Spirotherm

Mfr Part#: VJR125

UPC#: 638559001119

Availability: In Stock
Usually ships: within 1 business day
Qty Price
$128.95 / each & Free Shipping
x4 $491.80 / box & Free Shipping
(4 x $122.95 / each)
  • Description
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  • FAQs (1)

Spirovent Jr air eliminator model VJR125 features a patented Spirotube coalescing component, which "filters out" the air from a hydronic or radiant heating system' fluid, allowing for improved performance and extending the lifespan of the heating system's components.


Spirovent Jr air eliminator features an easy to install, in-line design, making it ideal for a large variety of residential and light commercial uses with pipe sizes ranging from 3/4" to 2".


Spirovent Jr model VJR125 is also equipped with a 1/2" threaded tapping, which allows for easy connection of an expansion tank.


Installation manual included.

Technical Specifications:

  • Construction: solid brass construction;
  • Connections: 1-1/4" FNPT (female threaded);
  • Max. operating pressure: 150 PSI;
  • Max. temperature: 270F;
  • Bottom tapping: 1/2" FNPT;
  • Flow at 4ft/sec. velocity: 15 GPM;
  • Weight: 4.0 lbs.


20 year limited warranty by the manufacturer.
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i have 2000 sqf house 2 floors is this is what i need to remove the air fro my system. SpirothermVJR125638559001119
Read 1 answer
See the manual - it will show you the optimal location for the air eliminator. Determine the size (diameter) of the main heating line (again, see illustration in the manual). Majority of the main boiler lines are 3/4" - 1-1/4" pipes.
Answered on 1/31/2013 by PexUniverse Customer Service
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