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Rotary Vane Pumps Manufacturer

A rotary vane pump is an intelligent machine, and in its most basic form, it is like any other type of air compressor. The pump works by creating suction in the pump chamber with an intake valve and exhaust valve that makes compression inside the device suck up molecules like dust, dirt, and other particles near or in contact with it.


Application of Rotary Vane Vacuum Pump

Vacuum packaging, Food technology, Bottling and filling machines, Plastics industry, Pneumatic conveying, Dust extraction systems, Packaging industry, and the Woodworking industry.


The rotor is usually wound with copper, while some variants use a cylindrical or “caged” rotor constructed of solid conductors. The rotor is the revolving part of this electrical engine.

Suction Flange

Suction flanges are used to connect a suction tube onto a hydraulic tank. They form a seal to prevent fluids from leaking and pollutants from entering the tank. Suction flanges also allow access to the suction element without draining the tank.

Blades and Vanes

These are wide blades attached to a rotating wheel or axis. The vanes maintain a tight seal against the pumping chamber’s wall, preventing fluid from flowing across the pump.


An electric motor is a machine that converts electrical energy into mechanical energy. Most electric motors generate force in the form of torque imparted to the motor’s shaft by interacting between the magnetic field of the motor and electric current in a wire winding.

common components

What are the parts of a Rotary Vane Vacuum Pump?

A rotary vane vacuum pump is an oil-sealed rotary displacement pump. The pumping system consists of a housing, an eccentrically installed rotor, vanes that move radially under centrifugal and resilient forces, and the inlet and outlet. The working chamber is located inside the housing and is restricted by the stator, rotor, and vanes. The eccentrically installed rotor and vanes divide the active section into two separate compartments with variable volumes.

The inlet valve, if available, is designed as a vacuum safety valve that is always open during operation. As the rotor turns, gas flows into the enlarging suction chamber until the second vane seals it off. The enclosed gas is compressed until the outlet valve opens against atmospheric pressure. The outlet valve is oil-sealed. When the valve is open, a small amount of oil enters the suction chamber, lubricating it and sealing the vanes against the housing (stator).


Types of Rotary Vane Vacuum Pumps

Rotary vane vacuum pumps are made in single- and two-stage rotary vane pumps. Depending on the user’s needs, they can decide which lends itself best to their application. Typically a two-stage pump will achieve lower pressures than a single-stage pump.

Single Stage Rotary Vane Vacuum Pump

The single-stage rotary vane vacuum pump has reliable operation performance, fewer wearing parts, less vibration, low noise, and high efficiency.

Double Stage Rotary Vane Vacuum Pump

The two-stage rotary vane rotary vacuum pump can be used as a liquid pump or a gas pump. It has the characteristics of wide applicability, large displacement, high efficiency, energy saving, high vacuum and large pressure.

Working Principle

The Working Principle of Rotary Vane Vacuum Pump

Generally, the basic design of a rotary vane vacuum system usually consists of the pump housing, the installed rotor, vanes that converge to a common center under spring force, and an inlet and outlet. These parts are inside the working chamber that is located inside the housing. The housing has two openings; the outlet valve is oil-sealed, while the inlet valve is designed as a vacuum safety valve. The vacuum safety valve is always open during operation.

The rotor and the vanes divide the working chamber into two separate spaces with variable volumes. As the rotor turns it, the trapped gas flows into a suction chamber until the second vane seals it off. Then the enclosed gas is compressed until the outlet valve opens aligned with atmospheric pressure. In a gas ballast operation, a hole to the outside is then extended to empty into a sealed suction chamber on the front side of the pump.

Featured Products

Rotary Vane Pumps for Sale

The following list is only a partial display of rotary vane vacuum pump products, and more rotary vane vacuum pump products are in succession on the shelves. Please get in touch with us by email if you need to buy a rotary vane vacuum pump. Email: [email protected]


What are the benefits of rotary vane vacuum pumps?

Lubrication prevents wear

“Lubrication prevents wear – Aluminium blades, rotor, housing, and housing cover bearings are lubricated with oil making them virtually wear-free. Reduced Operating Temperature – Heat is reduced as oil reduces friction with the compression chamber.”

Corrosion protection

“Corrosion protection – oil protects all components from corrosion and reaction with the gas. Cleaning effect – The oil cleans the compressor chamber of impurities and prevents damage extending pump life and performance.”


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Knowledge About Rotary Vane Vacuum Pump

Differences Between Single Stage And Double Rotary Vane Vacuum Pumps?

Single-stage rotary vane vacuum pump and double rotary vane vacuum pump lubrication method is the fundamental difference between their different scope of application. Rather than the double rotary vane vacuum pump having the ability to produce ultimate low pressure, the double rotary vacuum pump has an efficient fractionation effect making it more suitable for working under low intensity (less than one torr).

The high rate of oil flow in the atmospheric level of hydraulic noise in the high vacuum stage does not exist. The lThe low oil flow rate makes the double rotary vane vacuum pump suitable for working under intense pressure and not for continuous work under high pressure. Even in the absence of town gas, the double rotary vane vacuum pump noise level is generally lower than the single-stage rotary vane vacuum pump.

Applications of Rotary Vane Vacuum Pumps?

Oil-Lubricated Rotary Vanes Pump Applications
(1) Chemical and pharmaceutical processes – degassing, crystallization, drying, distillation, evaporation, supercooling, fractionation, impregnation, vacuum coating (sublimation), and vacuum filtration.
(2) Environmental engineering – Aeration, dust extraction systems, and drying.
(3) Food processing – cutting machines and bottling and filling machines.
(4) Industrial applications – Vacuum hold down, dust extraction systems, drying systems, and industrial furnaces.
(5) Packaging industry – Centralized vacuum systems and packaging machines.
(6) Pneumatic conveying
(7)Woodworking industry – dust extraction systems and vacuum hold down.
Dry Running Rotary Vane Pump Applications
(1) Environmental engineering – Aeration.
(2) Industrial applications – Lifting and holding and picking and place.
(3) Packaging industry – Packaging machines.
(4) Printing industry – Post-press applications and printing presses.
(5) Woodworking industry – Vacuum holds down.

About XinLan

XinLan is one of your best options if you are looking for a reliable rotary vane vacuum pump manufacturer. XinLan kept providing clients with professional, innovative, economical, and sustainable vacuum pumps and compressors for multiple applications in various industries.

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