
Our ZJ series Roots vacuum pumps are widely used in the vacuum degassing, vacuum melting, and vacuum surface treatment in the metal and non-metal material industries. When combined with the WLW oil-free vertical vacuum pump and water ring pump in series, they are particularly suitable for the vacuum polymerization, reaction, decomposition processes in the chemical industry, as well as vacuum distillation, vacuum drying, and vacuum crystallization in the food industry.
Features - Rotor Pumps
1. Offers high suction capacity over a wide pressure range.
2. Oil-free pump cavity to prevent oil vapor contamination of the vacuum environment.
3. Energy-saving, easy maintenance.
4. Must be used with a priming pump; not to be used alone.
Performance Parameters
Model | Suction Rate | Ultimate Pressure | MAX allows differential pressure | Pump RPM | Motor power for pumps | Bore size | |
Intake port | Air vent | ||||||
ZJ-30 | 30 | 5*10-2 | 5332 | 2770 | 0.75 | 50 | 40 |
ZJB-30 | 30 | 5*10-2 | 5332 | 2770 | 0.75 | 50 | 40 |
ZJ-70 | 70 | 5*10-2 | 5332 | 2870 | 1.5 | 80 | 50 |
ZJB-70 | 70 | 5*10-2 | 5332 | 2870 | 1.5 | 80 | 50 |
ZJ-150A | 150 | 5*10-2 | 5332 | 2900 | 3 | 100 | 100 |
ZJB-150 | 150 | 5*10-2 | 5332 | 2900 | 3 | 100 | 100 |
ZJ-300 | 300 | 5*10-2 | 4266 | 1450 | 4 | 150 | 150 |
ZJB-300 | 300 | 5*10-2 | 4266 | 1450 | 4 | 150 | 150 |
ZJ-600 | 600 | 5*10-2 | 4266 | 2900 | 5.5 | 150 | 150 |
ZJB-600 | 600 | 5*10-2 | 4266 | 2900 | 5.5 | 150 | 150 |
ZJ-1200A | 1200 | 5*10-2 | 4266 | 1450 | 11 | 300 | 300 |
ZJB-1200 | 1200 | 5*10-2 | 4266 | 1450 | 11 | 300 | 300 |
ZJ-1500 | 1500 | 5*10-2 | 3000 | 1460 | 11 | 250 | 200 |
ZJB-1500 | 1500 | 5*10-2 | 3000 | 1460 | 11 | 250 | 200 |
ZJB-2500 | 2500 | 5*10-2 | 3000 | 1470 | 18.5 | 320 | 250 |
ZJ-5000 | 5000 | 1*10-1 | 3000 | 1800 | 55 | 500 | 350 |
ZJB-5000 | 5000 | 1*10-1 | 3000 | 1800 | 55 | 500 | 350 |
ZJ-20000 | 20000 | 1*10-1 | 3000 | 1300 | 110 | 600 | 500 |
ZJB-20000 | 20000 | 1*10-1 | 3000 | 1300 | 110 | 600 | 500 |






