Honeywell 393690-4 Flange Kit

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. This kit is a direct replacement for Honeywell 393690-4/U and is engineered for high-performance sealing in residential and commercial gas heating systems. As a veteran technician, you know the importance of a precision air-tight seal; this kit includes a 3/4" straight flange, a high-temperature O-ring, 9/64" hex screws, and a protective dust plug to ensure the job is done right. It is compatible with a wide range of popular gas valves, including the Honeywell VR8200, VR8300, and SV9500 series. When performing a gas valve flange replacement or a new Honeywell gas valve installation, utilizing an NPT straight flange kit ensures structural integrity and leak resistance. This Honeywell flange assembly is built to withstand rigorous field conditions, providing the reliability demanded by contractors for critical HVAC repair parts.

Key Benefits

• Universal Compatibility: Designed for use with extensive Honeywell series including VR8200, VR8300, VR4200, VR4300, and SV9500.
• Complete Assembly: Includes all necessary 3/4" NPT componentsùflange, O-ring, and hex screwsùfor a zero-trip installation.
• Leak-Proof Seal: Features a high-grade elastomer O-ring to prevent gas bypass and ensure system safety.
• Durable Construction: Manufactured with heavy-duty materials to resist corrosion and operational wear in demanding environments.

Common Questions

Ensure the gas supply is off. Position the O-ring securely within the flange groove, align the 3/4" straight flange with the valve inlet or outlet, and tighten the four 9/64" hex screws in a cross-pattern to ensure even pressure and an optimal seal.

No, these part numbers refer to the same physical product. The "U" suffix typically denotes "Universal" or retail packaging, but the technical specifications and compatibility remain identical.

These flange kits are specifically intended for gas controls with flanged-style bodies. Always verify the valve body type; standard NPT threaded-only bodies do not accommodate these adapter kits.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.