Professional-grade Honeywell 393690-4 Flange Kit is a field-essential accessory designed for seamless connection between 3/4" NPT piping and specific Honeywell Gas Control Valves

leak-proof connection in hydronic systems where tight piping configurations require a 90-degree transition

Sanitary Design: Constructed with a smooth surface finish for easy cleaning and compliance with food safety protocols

Technicians should check for continuity across the terminals using a multimeter

which significantly reduces internal turbulence and pressure drop compared to standard short-radius elbows

Resideo 40003918-007 Adapter Kit Professional-grade Honeywell 393690-4 Flange KitFor veteran HVAC contractors, the Resideo 40003918 007 Adapter Kit (also cataloged as 40003918 007 U) is a critical component for retrofitting and maintaining 3 way diverting valves. This comprehensive zone valve conversion kit is engineered for use with V4044 and V8044 series valves, allowing for a seamless transition from old style powerheads to modern, replaceable models without the need to drain down the system. This significantly reduces labor