summary: 

The Roots vacuum pump is mainly composed of a pair of synchronous high-speed rotating "8" - shaped rotors and two semi-circular pump chambers. This pump cannot

Individual exhaust must be used in series with the front stage pump (such as water ring pump, rotary vane pump, slide valve pump, oil ring pump, etc.). At the inlet of the front stage pump

Connecting a Roots vacuum pump in series to form a unit can improve the vacuum degree of the front-end pump and greatly increase the pumping rate within the effective working range.

The ultimate pressure of Roots vacuum pump is determined by the front stage pump, and the data in the table below is for the standard configuration (equipped with a two-stage oil sealed mechanical vacuum pump)

Minimum ultimate pressure. Roots vacuum pumps are widely used in industries such as vacuum casting, vacuum melting, vacuum degassing, vacuum coating, as well as chemical and medical industries

Vacuum distillation, vacuum drying, etc. in the pharmaceutical industry. At the same time, our company has carried out nickel plating treatment on overcurrent components such as rotors, pump bodies, and end caps, greatly improving their performance

Extended the service life of Roots pumps in extracting corrosive gases and effectively prevented rusting of Roots pumps.

Advantages of this pump 

(1) Smooth operation, low noise, minimal vibration, high vacuum degree (low ultimate pressure).

(2) Can operate for a long time under high pressure difference.

(3) Fast startup, able to reach maximum vacuum in a short period of time.

(4) No need for oil lubrication, avoiding contamination of the system by oil vapor.

(5) Safe and reliable, the ZJP series comes with an overflow valve to automatically protect the pump.

(6) Compact structure, small footprint. The left, right, and bottom three exhaust ports can be selected for easy installation.

(7) Mechanical friction loss is small, resulting in low driving power, easy maintenance and repair, low cost, and high lifespan.

(8) Can extract condensable gases.

Table 1: Main Technical Parameters of ZJ Roots Vacuum Pump

Ultimate pressure (≤ Pa)

Table 2: Main Technical Parameters of ZJP Roots Vacuum Pump

Ultimate pressure (≤ Pa)

Note: Our company also has a magnetic driven Roots vacuum pump, whose performance parameters are the same as ZJ and ZJP.