Abstract: A dispensing system for petrol pumps, comprising a pump, a dispensing valve in a petrol pump nozzle and an electrically controllable solenoid valve (10), characterized in that the solenoid valve (10) includes a directly acting principal valve (18) and a bypass valve (30) arranged so as to bypass the principal valve (18), and a solenoid drive (34) by which in case of a differential pressure present above the sealing seat (24) of the principal valve (18) at first only the bypass valve (30) is able to be switched to the open position, and only after a pressure compensation has, occurred at the sealing seat (24) of the principal valve (18) by the opening of the bypass valve (30) is the principal valve (18) also able to be switched to the open position.

Abstract: A pilot controlled valve for motor vehicle tank systems whose valve body consists of two parts (10, 12). In the first housing part (10) an inlet duct (14), an outlet duct (16), an annular valve seat (20) and an annular duct (18) surrounding the latter are formed. A valve closure member (24) is urged by a compression spring (26) into engagement with the valve seat (20) and on a side thereof remote from the valve seat defines a pressure equalizing space (22), which is formed in the second housing part and connects a pressure equalizing duct (52) with the inlet duct (14). By means of a pilot valve (30, 32) a flow path (42) between the pressure equalizing space (22) and the outlet duct (16) is controlled. In the pressure equalizing duct (52) a check valve (54, 56) is arranged adapted to shut in the direction of flow from the pressure equalizing space (22) to the inlet duct (14). This means that the valve is counter pressure resistant.