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Nitrogen Purge Screw Vacuum Pump PDG200W

PDG200W nitrogen‑purged screw pump: 702 m³/h, 5 Pa, standard nitrogen purging (isolates backflow, prevents contaminant buildup), suitable for corrosive, high‑cleanliness, high‑vacuum applications.

Nitrogen Purge Screw Vacuum Pump PDG200W
PUYAN

PDG200W Core Parameters

Main technical parameters are shown below.
Pumping Speed
702m³/h
Ultimate Pressure
5Pa
Motor Power
22kW
Total Weight
630kg
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Product Features

Nitrogen Purge

Standard N₂ purge port. Injected nitrogen forms a gas barrier, isolating corrosive media and preventing contaminant buildup – protects rotors and pump body.

Oil‑Free & Clean

Dry‑running design, no oil in pump chamber. Oil‑vapor‑free exhaust – no contamination of process or environment. Ideal for semiconductor, pharma, food.

High Vacuum

PBG series: 1–2 Pa, PDG series: 5 Pa. Both outperform ordinary screw pumps – meet high‑vacuum needs from precision coating to chemical distillation.

Corrosion‑Resistant & Explosion‑Proof

Optional special coating and explosion‑proof motor for aggressive gases or flammable/explosive environments – suitable for chemical, pharma, lithium battery.

Water‑Cooled & Stable

Water‑cooled structure, high cooling efficiency, supports continuous operation. No need for compressed air – controlled operating cost.

Specifications

Model Pumping Speed (m³/h) Ultimate Vacuum (Pa) Motor Power (kW) Motor Speed (RPM) Noise (dB) Max Water Consumption (L/min) Inlet (mm) Outlet (mm) Pump Head Weight (kg)
PDG40W 143 5 4 2900 82 10 40 50 245
PDG80W 278 5 7.5 2900 83 20 40 50 350
PDG150W 521 5 15 2900 83 30 50 65 550
PDG200W 702 5 22 2900 84 45 65 80 630
PDG280W 912 5 30 2900 85 55 80 100 780

Applications

Puyan screw vacuum pumps are widely used in:

Industrial production

Industrial Production

For electronics, metallurgy, semiconductor – handles water vapor and light dust, delivers clean vacuum.

Food packaging

Food Packaging

Oil‑free vacuum for continuous stretch film packaging, thermoforming – ensures food safety and shelf life.

Medical equipment

Medical Equipment

Core of central suction systems – continuous, contamination‑free vacuum for operating rooms and wards.

Laboratory

Laboratory

For freeze drying, analytical instruments, molecular pump backing – completely oil‑free, no wear.

Central vacuum system

Central Vacuum System

Centralized supply in large plants (electronics, printing, pharma) – significant energy savings vs. distributed pumps.

Chemical & pharmaceutical

Chemical & Pharmaceutical

Vacuum distillation, drying, solvent recovery – oil‑free design prevents contamination, meets GMP.

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