DEVICE FOR TRAPPING FUEL VAPORS IN THE GAUGE OF A GAUGE ASSEMBLY OF A LIQUID FUEL DISPENSING APPARATUS WHEN EMPTYING THIS GAUGE

摘要

The device has balancing units (2) for preventing evaporation of liquid fuel (3) during gauging operation so as to constantly maintain an inner part of a gauge (1) at saturation pressure in applicable temperature and pressure conditions. A viewing glass (7) is fixed on an outlet opening (5) of a gauge body (4). An emptying pipe (9) is mounted at an outlet of the glass and connected to a fuel collecting tank (8). A rigid U-shaped siphon forming pipe section (10) is branched on the pipe so as to block passage of fuel vapors toward the tank.