PVG020 Core Parameters

Main technical parameters are shown below.

Pumping Speed

20m³/h

Ultimate Pressure

3/50Pa

Motor Power

1.1kW

Total Weight

42kg

Product Features

Air Cooling

Air‑cooled design – no external cooling water, simplifies installation, avoids water quality issues. Runs only on electricity, ideal for water‑scarce or poor‑quality water areas.

Dust & Contaminant Tolerant

No internal valves – eliminates valve failure. Gap sealing design tolerates dust, tar, and small particles. Handles dusty gases.

High Ultimate Vacuum

Variable‑pitch rotor profile for smooth meshing and good sealing. Ultimate vacuum down to 3 Pa or lower. Stable operation from atmosphere to ultimate vacuum – wide working range.

Low Maintenance & Energy Saving

Long maintenance intervals (thousands to ten thousand hours). No bearings or seals in pump chamber – low failure rate. Variable‑pitch technology saves ~30% energy. No oil change or disposal cost.

Specifications

Model	Pumping Speed (m³/h)	Ultimate Vacuum (Pa)	Motor Power (kW)	Motor Options	Inlet Size	Outlet Size	Cooling Method	Lubrication Method	Screw Inner Cavity Coating	Inlet HV Seal	Exhaust LV Seal	Seal Options	Noise (dB)	Weight (kg)
PVG020	20	3 or 50	1.1	Standard motor / VFD motor / Explosion‑proof motor	KF25	KF25	Air‑cooled, 5th generation variable pitch	Synthetic gear oil #46/#48	Alumina ceramic coating (standard)	Combined seal (lip seal, mechanical seal, gas seal)	Combined seal (lip seal, mechanical seal, gas seal)	Perfluoroelastomer seals available for fluorine‑oil version	69	42
PVG050	50	3 or 50	1.5/2.2		KF40	KF25							70	56
PVG080	80	3 or 50	2.2/3.0		KF40	KF25							71	65
PVG200	200	3 or 50	5.5		KF50	KF40							80	160
PVG300	300	3 or 50	7.5		KF50	KF40							80	190