The MB Sturgis High Capacity Two-Stage Auto Changeover Regulator # 888001-MBS wouldn't hurt your system as it is still going to reduce to 11" WC at the second stage but wouldn't be advantageous to have a higher BTU rating than what you actually need. You'll want to match the BTU rating as close as you can to the demand. The Compact Low Pressure 2-Stage Automatic Changeover RV LP Gas Regulator # 37207-31525 has a BTU rating of 262,500 which is typically more than enough for an RV. view full answer...
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