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PRODUCTS
products
ZJ1200 Roots Vacuum Pump
Roots vacuum pump, also known as mechanical booster pump, is a volumetric dry vacuum pump and one of the main equipment to obtain medium and high vacuum. Two 8-shaped rotors are used to rotate synchronously and reversely in two semi-circular pump chambers to complete the process of air exhaust. This pump cannot be used alone, and it must be used in system with the backing vacuum pump, such as screw pump. The ultimate pressure of the roots pump depends on the structure and manufacturing precision of the pump, and also depends on the front stage pump. The data in the table is the lowest limit pressure when the screw vacuum pump is backing vacuum pump.

1. High compression ratio: The rotor has a patented type line. It can have a large rotational speed within a wide pressure range (1~1x104Pa).
Suggestion: the maximum pressure difference between inlet and outlet is 15~20Torr, depending on the specification.
ZJ、ZJP Roots Vacuum Pump Performance Specification
TYPE | Ultimate Pressure(Pa) |
Capacity(L/s) |
Maximum |
Inlet/Outlet |
Motor Power(Kw) |
Weight (Kg) |
Backing Vacuum Pump |
ZJ-150 |
8×10–1 | 150 | 10000 | 150/100 | 3 | 210 | LG55/LGB30 |
ZJ-200 |
8×10–1 |
200 |
8000 |
100/80 |
3 |
210 |
LG55/LGB80 |
ZJ-300 |
8×10–1 |
300 |
8000 |
150/100 |
4 |
290 |
LG75/LGB110 |
ZJ-600 |
5×10–1 |
600 |
5000 |
200/150 |
7.5 |
560 |
LG150/LGB220 |
ZJ-1200 |
5×10–1 |
1200 |
5300 |
250/200 |
11/15 |
850 |
LG200/LGB300 |
ZJ-2500 |
8×10–2 | 2500 | 5000 | 320/250 | 22 | 1500 | ZJ-600/LGB220 |
ZJ-5000 |
8×10–2 |
5000 |
3000 |
400/320 |
37 |
3450 |
ZJ1200/LGB300 |
ZJP-70 |
8×10–1 | 70 | 10000 | 80/50 | 1.1/1.5 | 100 | LGB30 |
ZJP-150 |
8×10–1 | 150 | 8000 | 100/100 | 3 | 220 | LG55/LGB80 |
ZJP-300 |
8×10–1 | 300 | 8000 | 150/150 | 4 | 310 | LG75/LGB110 |
ZJP-600 |
5×10–1 |
600 |
5000 |
200/200 |
7.5 |
580 |
LG150/LG200 |
ZJP-1200 |
5×10–1 |
1200 |
5000 |
250/200 |
11/15 |
860 |
LGB220/LGB300 |
ZJP-2500 |
8×10–2 |
2500 |
3000 |
320/250 |
22 |
1500 |
ZJ-600/LGB220 |
P.S The ultimate pressure in the table is measured by Mcleod gauge.
ZJp is the roots vacuum pump equiped with overflow valve.