The dual–line system convey the lubricant under pressure over a 3/2 way control valve via two main lines through the entire lubrication system.
During the discharge time (“dead time”) of one line, is the other line
An overlapping or a direct connection in the two main lines is possible. The lubricant distributor can consist of one , or of several distribution elements.
All components in a dual-line system can be merged in one element.
The lubricant distributors are integrated in these two main lines which are alternately operate by pressure increase and pressure decrease and convey the lubricant through the high pressure hose lines. In a dual-line system, the pressure alternation is controlled by a reversal between the pump and lubricant distributor.
A dual-line system is mainly suitable for centralised lubrication systems where high pressure ranges are needed, with a high number of lube points and long lines distances.
The application field for dual-line systems are large
industrial plant where the lube points are not next to each other. Further, the dual-line system is
often the perfect solution and used in industry branches like mills.
Advantages of a dual-line system: