While both devices serve the purpose of fueling vehicles, LPG dispensers are engineered for pressurized gases, whereas gasoline pumps handle liquid fuels. LPG dispensers must maintain constant high pressure and temperature control to keep gas in liquid form.
Their hoses, nozzles, and valves are reinforced to handle pressure and prevent gas leaks. The metering systems are also specifically calibrated for the density and flow characteristics of LPG.
In addition, LPG dispensers are equipped with vapor recovery systems and specialized safety sensors, making them more complex and safety-oriented than standard fuel pumps.