DESCRIPTION
Roots Rotary Piston Pump System is made up with the Roots Vacuum Pump and Rotary Piston Vacuum Pump in series connection. Rotary Piston Vacuum Pump is used as the pre-vacuum pump and the backing vacuum pump of the Roots Vacuum Pump, while the Roots Vacuum Pump is the main vacuum pump. The selection of displacement ratio, between the Roots Vacuum Pump and the Rotary Piston Vacuum Pump, is mainly referrd to the vacuum value of the vacuum system under long term running; when working in low vacuum, it is advised to select small displacement ratio(2: 1 to 4: 1); If working in medium or high vacuum, the bigger displacement ratio(4: 1to10: 1)should be preferred.

FEATURES
1. High vacuum, high exhausting efficiency in medium or high vacuum, wide working range, obvious energy-saving results.
2. Integrated rack, compact structure, small required space.
3. High automation, simple operation, easy maintenance, safe, reliable and durable running.
4. To customize a special pump system as per the specific needs of the end user.

APPLICATIONS
Widely used in vacuum coating, vacuum metallurgy, vacuum heat treatment, vacuum drying, vacuum impregnation, vacuum strainer, poly-silicon production, aerospace simulation and so on.

PARAMETERS

Main Specifications for One Roots Pump with Single Stage Rotary Piston Punmp Vacuum System

Model	Main Pump 50Hz	Backing Pump	Displacement	Ultimate Partial Pressure	Ultimate Total Pressur	Motor Power	Suction	Discharge
JZH75-3	ZJ-75	H-25DVA	75L/s	0.05Pa	0.8Pa	4.4, 3.7kW	100mm	40mm
JZH110-4	ZJ-110	H-25DVA	110L/s	0.05Pa	0.8Pa	4.4, 3.7kW	100mm	40mm
JZH150-6	ZJ-150	H-25DVA	150L/s	0.05Pa	0.8Pa	5.2, 4.5kW	100mm	40mm
JZH220-4	ZJ-220	H-50DV	220L/s	0.05Pa	0.8Pa	8, 6kW	100mm	50mm
JZH220-3	ZJ-220	H-60DVA	220L/s	0.05Pa	0.8Pa	8, 7kW	100mm	50mm
JZH300-4	ZJ-300	H-70DV	300L/s	0.05Pa	0.8Pa	9.5kW	150mm	63mm
JZH300-3	ZJ-300	H-100DV	300L/s	0.05Pa	0.8Pa	11.5kW	150mm	63mm
JZH600-6	ZJ-600	H-100DV	600L/s	0.05Pa	0.8Pa	15, 13kW	200mm	63mm
JZH600-5	ZJ-600	H-120DV	600L/s	0.05Pa	0.8Pa	15, 13kW	200mm	63mm
JZH600-4	ZJ-600	H-150DV	600L/s	0.05Pa	0.8Pa	18.5, 16.5kW	200mm	80mm
JZH600-3.5	ZJ-600	H-160DV	600L/s	0.05Pa	0.8Pa	18.5, 16.5kW	200mm	80mm
JZH600-3	ZJ-600	H-220DV	600L/s	0.05Pa	0.8Pa	22.5, 20.5kW	200mm	100mm
JZH1200-8	ZJ-1200	H-150DV	1200L/s	0.05Pa	0.8Pa	22kW	250mm	80mm
JZH1200-7.5	ZJ-1200	H-160DV	1200L/s	0.05Pa	0.8Pa	22kW	250mm	80mm
JZH1200-5	ZJ-1200	H-220DV	1200L/s	0.05Pa	0.8Pa	26kW	250mm	100mm
JZH1200-4	ZJ-1200	H-300DV	1200L/s	0.05Pa	0.8Pa	33kW	250mm	100mm
JZH1800-8	ZJ-1800	H-220DV	1800L/s	0.05Pa	0.8Pa	30kW	250mm	100mm
JZH1800-6	ZJ-1800	H-300DV	1800L/s	0.05Pa	0.8Pa	37kW	250mm	100mm
JZH1800-3	ZJ-1800	H-600DV	1800L/s	0.05Pa	0.8Pa	60kW	250mm	150mm
JZH2500-11	ZJ-2500	H-220DV	2500L/s	0.05Pa	0.8Pa	37kW	300mm	100mm
JZH2500-8	ZJ-2500	H-300DV	2500L/s	0.05Pa	0.8Pa	44kW	300mm	100mm
JZH2500-4	ZJ-2500	H-600DV	2500L/s	0.05Pa	0.8Pa	67kW	300mm	150mm
JZH5000-8	ZJ-5000	H-600DV	5000L/s	0.05Pa	0.8Pa	82kW	400mm	150mm

Note: 1, If roots vacuum pump is operated at 60HZ, the displacement should be increaced to 1.2times.

          2, For the ZJP roots vacuum pumps with bapass valve, the unit model must be changed to JZPH, other parameters are unchanged.

Main Specifications for One Roots Pump with Double Stages Rotary Piston Pump Vacuum System

Model	Main Pump 50Hz	Backing Pump	Displacement	Ultimate Partial Pressure	Ultimate Total Pressur	Motor Power	Suction	Discharge
ZJ2H75-5	ZJ-75	2H-15DVA	75L/s	0.02Pa	0.5Pa	4.4, 3.7kW	100mm	40mm
ZJ2H110-7	ZJ-110	2H-15DVA	110L/s	0.02Pa	0.5Pa	4.4, 3.7kW	100mm	40mm
ZJ2H150-5	ZJ-150	2H-30DV	150L/s	0.02Pa	0.5Pa	7, 6kW	100mm	50mm
ZJ2H220-7	ZJ-220	2H-30DV	220L/s	0.02Pa	0.5Pa	8, 6kW	100mm	50mm
ZJ2H220-5	ZJ-220	2H-45DVA	220L/s	0.02Pa	0.5Pa	8, 7kW	100mm	50mm
ZJ2H220-4	ZJ-220	2H-50DV	220L/s	0.02Pa	0.5Pa	9.5, 8.5kW	100mm	63mm
ZJ2H300-6	ZJ-300	2H-50DV	300L/s	0.02Pa	0.5Pa	9.5kW	150mm	63mm
ZJ2H300-4	ZJ-300	2H-70DV	300L/s	0.02Pa	0.5Pa	11.5kW	150mm	63mm
ZJ2H600-8.5	ZJ-600	2H-70DV	600L/s	0.02Pa	0.5Pa	15kW	200mm	63mm
ZJ2H600-7.5	ZJ-600	2H-80DV	600L/s	0.02Pa	0.5Pa	15kW	200mm	63mm
ZJ2H600-6	ZJ-600	2H-120DV	600L/s	0.02Pa	0.5Pa	18.5, 16.5kW	200mm	80mm
ZJ2H600-5	ZJ-600	2H-120DV	600L/s	0.02Pa	0.5Pa	18.5, 16.5kW	200mm	80mm
ZJ2H1200-8	ZJ-1200	2H-150DV	1200L/s	0.02Pa	0.5Pa	26kW	250mm	100mm
ZJ2H1200-5	ZJ-1200	2H-220DV	1200L/s	0.02Pa	0.5Pa	33kW	250mm	100mm
ZJ2H1800-8	ZJ-1800	2H-220DV	1800L/s	0.02Pa	0.5Pa	37kW	250mm	100mm
ZJ2H1800-4	ZJ-1800	2H-450DV	1800L/s	0.02Pa	0.5Pa	60kW	250mm	150mm
ZJ2H2500-11	ZJ-2500	2H-220DV	2500L/s	0.02Pa	0.5Pa	44, 40.5kW	300mm	100mm
ZJ2H2500-5.5	ZJ-2500	2H-450DV	2500L/s	0.02Pa	0.5Pa	67, 63.5kW	300mm	150mm
ZJ2H5000-11	ZJ-5000	2H-450DV	5000L/s	0.02Pa	0.5Pa	82kW	400mm	150mm