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The 400-4 from Taco is a 1/8” NPT Hy-Vent Air Vent. This item is simple, easy to install and is compatible with any heating system. For best performance use it in combination with Taco Air Scoops that have a 1/8" outlet on top. The vents are easily serviceable by simply unscrewing the vent cap.
Technical Specifications:
Product Specs | |
Connection Type: | NPT |
Size: | 1/8" |