Rotary Pump

DVP LC Series — Lubricated Rotary Vane Pump

The DVP LC Series is a family of single-stage, oil-lubricated rotary pumps manufactured in Italy by DVP Vacuum Technology. The design uses a proven rotary vane mechanism: spring-loaded vanes rotate inside an off-centre housing, creating expanding and compressing chambers that draw process gas in and expel it through the exhaust. Oil lubrication seals the vanes, reduces friction, and eliminates oil vapour carry-over into the process line.

With a range spanning LC 2 through LC 305, there is a suitable rotary pump model for small OEM instruments up to large-scale food packaging production lines.

Key Technical Highlights

• Capacity range: 2 – 305 m³/h
• Ultimate pressure: Down to 0.1 mbar (Abs.) on select models
• Stage: Single-stage
• Operating principle: Oil-lubricated rotary vane
• Gas ballast: Continuously operating — handles moisture-laden gas streams
• Anti suck-back device: Prevents oil from entering the process line on stop
• Exhaust: Float-type oil recovery valve + mist eliminator for clean discharge
• Variants available: Standard, WR (high water vapour), HV (high vacuum)
• Origin: Italy 🇮🇹

Features of the DVP LC Series Rotary Pump

1. Continuous-Duty Operation

Designed to run continuously within a pressure range of 400 to 0.1 mbar (Abs.). No duty-cycling is required for the vast majority of industrial processes, reducing wear and extending service life.

2. Oil Suck-Back Prevention

A dedicated sealing device stops oil from being drawn into the process line when the pump stops under vacuum. This protects both the downstream equipment and any product being processed.

3. Vapour-Free Exhaust

A float-type automatic oil recovery valve, combined with an exhaust mist eliminator, ensures no oil vapour is discharged during operation — a critical requirement in food, dental, and pharmaceutical applications.

4. Gas Ballast for Vapour Handling

A continuously-operating gas ballast allows the pump to handle intake flows containing moisture without condensation forming inside the oil. Ideal for packaging and food processing environments.

5. WR Variants for High-Humidity Applications

LC WR models (LC 25WR, LC 40WR, LC 60WR) add an oil/water condensate separation device that automatically expels collected water when the pump stops, allowing stable long-term operation in high-humidity processes.

6. Compact and Low-Noise

The LC Series has a minimal footprint and a low acoustic signature, making it straightforward to integrate into space-constrained OEM enclosures or production cells without additional noise attenuation.

DVP LC Series — Model Range

Select the right rotary pump capacity for your application. Contact Winston Engineering for pricing and availability on any model below.

Applications

The DVP LC Series rotary pump is a versatile solution trusted across a broad range of industries:

• Food & Vacuum Packaging — Continuous vacuum generation for MAP (modified atmosphere packaging), skin packs, and tray sealing lines.
• Dental Equipment — Compact, quiet operation meets ISO dental vacuum standards in clinical suction and chairside equipment.
• CNC Marble & Glass — Reliable vacuum holding for CNC routing tables, waterjet cutting, and flat glass processing machinery.
• Precious Metal Casting — High vacuum levels reduce porosity in investment casting of gold, silver, and platinum alloys.
• Printing & Paper — Vacuum feed, sheet handling, and impression cylinder applications in offset and digital printing.
• Vacuum Lifting Systems — Ergonomic handling of sheet materials, glass panes, and large-format panels on production lines.
• Garage & Workshop — Brake bleeding, HVAC evacuation, and general maintenance vacuum in automotive workshops.
• Laboratory & Filtration — Solvent filtration, desiccator evacuation, and sample preparation in analytical environments.

Frequently Asked Questions — Rotary Pump

What is a rotary vane pump and how does it work?

A rotary vane pump is a type of positive-displacement rotary pump that uses spring-loaded vanes mounted in an off-centre rotor. As the rotor spins inside a cylindrical housing, the vanes slide in and out to seal variable-volume chambers, drawing gas in at the inlet and compressing it toward the exhaust. In the DVP LC Series, oil lubrication seals the vanes, cools the pump, and suppresses vapour at the exhaust — enabling deep vacuum levels down to 0.1 mbar (Abs.).

What is the difference between a rotary vane pump and other rotary pumps?

Rotary pump is a broad family covering rotary vane, rotary lobe (roots), rotary screw, and liquid ring designs. Rotary vane pumps like the DVP LC Series are best suited for medium-to-high vacuum (down to 0.1 mbar) with a compact footprint. Rotary lobe blowers (Unozawa, Hibon) suit high-flow, lower-vacuum duties. Liquid ring pumps (Pompetravaini) excel in wet or corrosive gas handling.

What industries use the DVP LC Series rotary pump?

The LC Series is widely used in vacuum packaging and food processing, dental equipment, CNC marble and glass machinery, precious metal vacuum casting, printing and paper industries, vacuum lifting systems, garage and workshop equipment, and laboratory filtration.

Is oil suck-back a concern with the DVP LC Series?

No. The DVP LC Series incorporates a dedicated sealing device that prevents oil from being drawn back into the process line if the pump stops while under vacuum. A float-type automatic oil recovery valve and exhaust mist eliminator further ensure clean, vapour-free discharge during normal operation.

Can the DVP LC Series handle high water vapour loads?

Standard LC models include a continuously-operating gas ballast for moderate vapour handling. For very high vapour concentrations, DVP offers LC WR variants (LC 25WR, LC 40WR, LC 60WR) with an oil/water condensate separation device that expels collected water on pump stop — enabling continuous operation in demanding humid environments.

Where can I buy the DVP LC Series rotary pump in Singapore?

Winston Engineering is the authorised Singapore distributor for DVP vacuum pumps. Contact our team for product selection, technical consultation, and quotation. We stock key LC Series models locally and can source the full range, including LC WR water-vapour variants and high-vacuum LC 205–305 models.