Armstrong International D24659 Thermostatic Operator R-410A Verify the part number against

Verify the part number against your equipment's service manual or examine the existing bearing cartridge for the etched 12755-700 identifier

This HVAC drum adapter is compatible with various tube materials

What is the benefit of the 1/4" SAE flare equalizer

How do I verify if the Reznor 43425 is the correct size for my unit

You must retain the existing hardware or purchase Reznor 97572 separately

Armstrong International D24659 Thermostatic Operator R-410A Verify the part number againstThe Armstrong International D24659 (also identified by part number 6005639) is a heavy duty LV 4W Remote Wall Mounted Thermostatic Operator designed for precise temperature regulation in hydronic heating systems. This non electric thermostatic head features a remote wall mounted sensor and a liquid filled element, ensuring reliable valve actuation based on ambient room conditions rather than local pipe temperature. Built for compatibility with