LP Gas 15" Pigtail RV LPG Hose - Acme to MPT- Hi Capacity MER426H-15roduct Description: 15" LP Pigtail Hose 1 4" MNPT provides a safe, user friendly connection from your Marshall Excelsior MEGR 253 253H regulator to a standard LP gas cylinder without the use of a wrench. The easy to tighten nylon nut swivels on a connector fitting that is heat sensitive. Between 240 F and 300 F the brass nipple displaces (approximately 1 4) closing the cylinder valve module and stopping the flow of gas from the container. Inside the