Manzel Model 25 Force Feed Lubricators are economical, general purpose units of double plunger design for precise metering of lubricants (either mineral oil base or synthetics). All working parts are totally enclosed—away from dust, water and impurities—and self-lubricated at all times by the lubricant in the reservoir. General-Purpose Lubrication: automatic, precision metering for all types of machinery. Pressures: Up to 1000 psi (69 bar) Type Pumping Unit: Clear-Vue. Sight Feed Chamber functions at atmospheric pressure. Shows amount of lubricant being pumped. Unitized Construction: Contains complete feed regulating mechanism. Equipped with inlet strainer. Unitized Construction: Contains complete feed regulating mechanism. Equipped with inlet strainer. Displacement, Output: 1/4 to 12 drops per stroke with 5/16 in plunger; 1/6 to 6 drops per stroke with 3/16 in plunger. Reservoirs: Single Compartment, sheet metal construction. Feed Regulator: External screw-type precisely adjustable while idle or in operation. Lubriquip part number 225-001-970