whereas plumbing uses Nominal (ID) sizing

corrosion-resistant plastic designed specifically for HVAC condensate management

the Lennox R47181-001 (also marketed under the Armstrong Air 46K67 part number) is essential for maintaining system efficiency by intelligently monitoring temperature sensors and time parameters

Seamless Integration: Low-profile white wall-mount housing allows for unobtrusive installation in any heated space

It offers more flexibility

Johnson Controls DBK11A-602R Body Kit R-22 whereas plumbing uses Nominal (ID)The Johnson Controls DBK11A 602R Body Kit is a field replaceable internal component set designed specifically for 3 inch V43 Series water actuated refrigerant valves. This disc body kit allows for comprehensive service of the valve's internal sealing surfaces without requiring the removal of the entire valve body from the piping system, reducing downtime during critical HVACR maintenance. Engineered for commercial refrigeration systems and high