FL1 Injectors are positive displacement type. They have adjustable outputs and a visual indicator pin. They can supply one lubrication point, or several in combination with a progressive divider. All incorporate grease zerk fittings for priming system.
The lubricant under pressure is introduced into entry port and pushes a seal which opens teh entry channel. Pressure moves the main piston to deliver a preadjusted volume determined by the value of the discharge chamber.
At the end of the lubrication cycle, the vent valves relieves the primary line. Spring which was compressed, pushes the seal to its initial position and opens the entry channel. When the main piston moves to the top, it transfers the lubricant into the discharge chamber. The injector is ready for the next cycle.