Connecting fitting for inserting into the connecting line between a heating oil tank and an oil burner comprises a housing with a heating oil filter and a pressure maintaining valve arranged in a connecting channel

摘要

Connecting fitting (1) comprises a housing with a heating oil filter (2) and a pressure maintaining valve (12) arranged in a connecting channel (13) so that it can be moved into a first operating position when a ventilating valve (11) is in the working position to release a connecting channel between supports. The pressure maintaining valve can be moved into a second operating position when the ventilating valve is in the ventilating position to close the connecting channel. Preferred Features: The pressure maintaining valve and the ventilating valve are mounted in two separate supports and each have an operating part for manual operation.