Resideo 391936 Conversion Kit this is the official OEM

this is the official OEM successor part

This 3/8" NPT automatic vent limiter features a precision-machined ball check valve mechanism that permits free inhalation for sensitive diaphragm movement during normal operation but limits gas escape to within ANSI Z21

the N5-12 ensures consistent performance and thread alignment

Do I need to use a wrench to tighten these

Rugged Construction: Built with high-conductivity materials to withstand the high-voltage demands of HVAC spark ignition

Resideo 391936 Conversion Kit this is the official OEMThe Resideo 391936 Conversion Kit is a field essential component designed for converting gas valves from Liquid Propane (LP) to Natural Gas. Engineered specifically for single stage gas valves, this kit features a 3" to 5" W. C. adjustment range, ensuring precise manifold pressure regulation for optimal burner performance. This kit is a direct 1: 1 replacement for the 391936 U and is compatible with an extensive range of Resideo and Honeywell Home