VENTILANORDNUNG MIT MINDESTENS ZWEI MEMBRANVENTILEN

摘要

The invention relates to an oil pump unit for a nozzle burner that includes a diaphragm type valve assembly located between a pump housing and a cover removably mounted by the pump housing. The valve assembly includes two or more diaphragm regulating valves or valve sections having an individual diaphragm therefor. The cover and housing together with the valve assembly defining a fluid circuit for controlling the flow oil to the burner nozzle conduit.