Description
The Honeywell 391936 is a single-stage LP Gas to Natural Gas conversion kit designed for use with Honeywell V400, V800, VS820, and VS821 Series gas valves. This kit provides everything needed to convert compatible standard and slow opening valves from liquefied petroleum (LP) gas to natural gas operation, making it an essential tool for technicians performing fuel-type changeovers in residential and light commercial heating applications.
What’s Included
- Regulator spring (calibrated for natural gas pressure)
- O-ring for a reliable, leak-free seal
- Conversion screw
- Conversion cap
Key Features
- Converts single-stage LP gas valves to natural gas
- 3″–5″ W.C. outlet pressure adjustment range
- Compatible with V400, V800, VS820, and VS821 Series gas valves
- Designed for standard and slow opening valve configurations
- Not for use with step opening valves
- Genuine Honeywell OEM replacement kit
Compatible Valve Series
- V400 Series
- V800 Series
- VS820 Series
- VS821 Series
Important Notes
- This kit is NOT compatible with step opening valves
- Always verify valve model and current fuel type before ordering
- Installation should be performed by a qualified HVAC or gas technician in accordance with local codes and manufacturer instructions







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