Multi-Line Lubrication System
Multi-Line Lubrication Systems
"MULTI-LINE centralized lubrication system is suitable for machines with many lubrication points on long pipe length. It is mainly used for dispensing grease and is widely operated today in various industrial sectors. Basically, MULTI-LINE lubrication system consists of a lubrication pump, a change-over valve, dual-line metering valves and two main delivery lines. The lubricant discharged from the pump is forced to flow under pressure through alternately one of the two main delivery lines to the dual-line valves by the change-over valve, it is divided as it passes through the dual-line valves and dispensed to the mated lubrication points. It is easy to add or reduce the dual-line valves after installation of the lubrication system so the dual-line systems provide good flexibility against the changes in the quantity of the lubrication points of equipment. The amount of lubricant output per lubrication point is finely adjustable thus the dual-line valves supply precisely metered volume to the lubrication points.Depending on the mechanism, there are hydraulic, electric, and electromagnetic change-over valves. When a hydraulic valve is used, it is called an “END-R” type system, and when an electric or electronic valve is used, it is called an “END” type system which shall have pressure switches at the end of the line. The amount of lubricant output per lubrication point is finely adjustable thus the dual-line valves supply precisely metered volume to the lubrication points.In the dual-line systems, the stop of the pump is controlled by means of pressure not time. In other words, when the pump starts and the lubricant is supplied to one of the two main delivery mains, and all connected dual-line metering valves are completely operated, the pressure in the main supply line rises to the set pressure. The hydraulic change-over valve or the pressure switch senses this pressure build-up and make the lubrication pump stop. It is easy to detect leaks or blockages in the pipes due to the pressure-controlled method."
