These adapters are intended for use on LP-gas delivery truck hose outlets. Features the Industry's Highest Flow Rate for fast delivery while providing the ability to remove the hose end filler valve in the event that the tank fill valve fails to close. During a tank filler valve failure, the integral check valve prevents loss of product. The ME571 is specifically designed to work in conjunction with the ME800 series of minimal loss hose end valves and will allow normal swivel operation of the hose end valve fill nozzle.
