12 In Inverted Flare Pigtail - Type 1 Connect Tank To Reg. The MB Sturgis RV Type 1 (Dark Green) includes an internal back check to ensure the system does not allow a back flow gas leak. 12" Pigtail MAX FLOW CAPACITY - 200,000 BTU's P/H, TEMPERATURE RANGE - -40F to 140 (-40C to 60C) CERTIFICATION - UL569 / ANSI Z21-81 Used for LP Gas Only