Ensure proper draft and safe operation of your pellet stove with the genuine Lopi / Avalon 90-0791 Draft Flow Vacuum Switch. This critical safety component (also called the low draft pressure switch) monitors negative pressure in the venting system. It confirms that exhaust is flowing correctly before allowing the auger to feed pellets.
If the switch does not detect proper vacuum, it opens the circuit — stopping the auger to prevent unsafe fuel buildup and potential shutdowns.
Key Specifications:
- Type: Vacuum Pressure Switch (Normally Open)
- Replaces: 90-0791, 93005060
- Note: Newer versions may have a different appearance but function identically
Compatible Models:
- Lopi FoxFire – 2017 – 2020
- Lopi Deerfield – 2017 – 2021 up to Serial number 2110-002039*
Common Symptom: Stove fails to start, auger does not feed, or error related to low draft/vacuum. Easy plug-and-play replacement. Bracket sold separately if needed.
