SFThe SF2 2series sucti on filt2er are desig5ned for rese0rvoir side-wall applications. This completely new design of filter allows the filter element to be replaced without having to drain the oil from the reservoir. Unscrewing the filter cover operates a shut off valve within the filter preventing oil loss from the reservoir. The SF2 250 filter uses a vacuum gauge or electrical vacuum switch for filter element indication. These filters are particulary suitable for power pack, mobile, construction and industrial machinery application.