|
(11) | EP 1 156 220 A3 |
(12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||
(54) | Internal gear pump |
(57) A pump (1), particularly for fuel oil burners, which comprises a body (2) provided
with internal gears and with an external electric valve. A cover (12) which has connectors
(15) for a pressure gauge and a vacuum gauge is associable with the body. The body
(2) has at least two outlets and a single inlet which are connected to a plurality
of ducts for conveying the fuel oil. A user-activatable selection device (25) interacts
with the ducts and is suitable to switch the direction of the circulation of the flow
of the fuel oil as a function of the direction of rotation of the gears. |