Detail view of Dual Line Lubrication Pumps
Applications
Dual line system is used where large distance in lubrication points. This is high pressure pump and used in steel plants, cement plants, Turbine generator, furnaces, sugar plants, spong iron plants etc.
Construction
Dual line lubrication system comprising of a single pumping station having pumping elements and fitted on the outer periphery of the housing. Reservoir also mounted on housing and fitted on base plate with moot, gear box. Change over valve, pressure gauge etc.
Working
In dual line lubrication pump the p umping elements push the grease of high pressure (up to 250 kg/cm2) with the help of cam. Cam is driven by speed reduction gear, Grease feed in change over valve from pump elements, Change over valve is to deliver grease through one of the out let parts alternatively after receiving signal from end pressure relay, Distribution of grease at different lubrication point done by Dose feeder and this pump operate by the control panel.
Models
| S.no | Model Name | Details |
|---|---|---|
| 1 | DGL-30 | Reservoir Cap. 30 KG. Max discharge 250 gm/min. Pressure setting 1250 Kg/cm2. |
| 2 | DGL-50 | Reservoir Cap. 50 KG. Max discharge 250 gm/min. Pressure setting 1250 Kg/cm2. |
| 3 | DGL-70 | Reservoir Cap. 70 KG. Max discharge 250 gm/min. Pressure setting 1250 Kg/cm2. |
| 4 | DGL-100 | Reservoir Cap. 100 KG. Max discharge 250 gm/min. Pressure setting 1250 Kg/cm2. |
Key Features
- High pressure output up to 250 kg/cm² — suitable for long pipeline runs
- Alternate delivery via change-over valve ensures continuous lubrication
- End pressure relay triggers automatic line switching — no manual intervention
- Dose feeders allow precise, independently adjustable grease quantity per point
- Available in 30 kg, 50 kg, 70 kg and 100 kg reservoir capacities
- Suitable for centralised grease lubrication with 50 to 500+ lubrication points
- Motor-driven with speed reduction gearbox for reliable, low-maintenance operation
How a Dual Line System Works
A dual line lubrication system operates on two main supply lines running in parallel throughout the machine. The pump pressurises Line 1 while Line 2 is connected to the return. Dose feeders along both lines dispense a measured shot of grease to each lubrication point. When the end pressure relay senses that Line 1 has reached the set pressure, the change-over valve switches — Line 2 is now pressurised and Line 1 becomes the return. This alternating cycle continues automatically, ensuring every point is lubricated on every cycle. A pressure switch or relay can signal the control panel if a line fails to reach pressure, alerting maintenance to a blockage or pump fault.
Because the system operates at very high pressure, it can push grease through long pipelines (up to several hundred metres) and to a large number of points — making it the preferred choice for large-scale plant machinery such as steel rolling mills, cement kilns, and sugar crushers.