501502A | Hi Capacity Air Vent 3/4"NPT | Caleffi Product Type_Burner Mounting This compact device measures 4

This compact device measures 4 x 7 x 5-1/2 inches and is designed to prevent freeze-ups in temperatures as low as -20°F

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Control Unit Heatronic 87377046710

committed to providing our customers with the best solutions for their project needs

Precision Design: The mounting block features a precision-machined 1-5/16-16 tapped hole that ensures accurate and secure hold of fixtures

501502A | Hi Capacity Air Vent 3/4"NPT | Caleffi Product Type_Burner Mounting This compact device measures 4High Capacity Air Vent: Caleffi 501502A Caleffi 501502A is a high capacity air vent specifically designed to provide efficient air release from hydronic systems. Constructed from durable materials, it ensures reliable performance and longevity. Key Features: 3 4" NPT connection for easy integration with piping systems. Automatic air release mechanism prevents air accumulation within the system. Compact design allows for installation in tight spaces.