ZJP-300 Core Parameters
Product Features
Dry & Oil-Free
No oil in pump chamber. Non‑contact rotors eliminate friction. Exhaust contains no oil vapor – clean vacuum, no contamination.
High Ultimate Vacuum
ZJP series: 0.05 Pa alone. With a backing pump, system pressure drops by an order of magnitude – ideal for high‑vacuum processes.
Wide Pumping Speed Range
30 to 5000 L/s (10+ models). Strong speed from 1 kPa down to 0.1 Pa – compensates backing pump drop, improves overall efficiency.
Broad Application Range
Low sensitivity to small amounts of water vapor and dust. Pairs with rotary vane, screw, or liquid ring pumps for coating, drying, metallurgy, semiconductor, space simulation, etc.
Technical Specifications
| Model | Pumping Speed（L/s） | Ultimate Pressure（Pa） | Differential Pressure（kPa） | Motor Power（kW） | Weight（kg） | Noise（dB） |
|---|---|---|---|---|---|---|
| ZJP-30 | 30 | 0.05 | 8 | 0.75 | 75 | 75 |
| ZJP-70 | 70 | 0.05 | 6 | 1.5 | 100 | 76 |
| ZJP-150 | 150 | 0.05 | 6 | 2.2 | 215 | 78 |
| ZJP-300 | 300 | 0.05 | 5 | 3.7 | 480 | 80 |
| ZJP-600 | 600 | 0.05 | 4 | 7.5 | 503 | 82 |
| ZJP-1200 | 1200 | 0.05 | 3 | 11 | 1580 | 85 |
| ZJP-2500 | 2500 | 0.05 | 3 | 18.5 | 1620 | 87 |
| ZJP-5000 | 5000 | 0.05 | 3 | 37 | 4350 | 88 |
Applications
PUYAN Roots vacuum pumps are used in:
Industrial Production
Fast pumping for vacuum metallurgy, large coating, space simulation. High speed builds medium‑high vacuum quickly.
Medical Equipment
Vacuum drying in sterilizers (e.g., ethylene oxide). Rapid moisture removal boosts sterilization efficiency.
Laboratory
Stable medium‑high vacuum for wind tunnels, space environment simulation, and other large test rigs.
Central Vacuum System
Main pump for plant‑wide vacuum stations in paper, printing, power. High flow, low energy with backing pumps.
Chemical & Pharmaceutical
Vacuum distillation, dehydration, solvent recovery in large reactors. High speed batch processing.
Food Packaging
Main pump in central vacuum systems for large production lines. Fast vacuum sealing with backing pumps.