Stand=by spare oil system for heating oil tank

摘要

In the heating oil tank (1) lower section remains a preset oil vol. which is exhausted by a manual operation of valve-like slider (2). Pref. the spare oil vol. is contained in a standby vessel (3) interacted in the oil tank. The slider is mounted on a fitting (4) located on top of the oil tank. The slider carries two suction tubes (8,7), alternately opened and closed by the slider. In normal operation, with the tank full, the slider is not displaced and the first suction tube (8) is open. By manual displacement of the slider the second tube (7) is opened for delivery of the standby oil vol.