Panda Data

8/16/2019 Panda Data

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Panda

WV 0500-2000

Rotary Lobe Vacuum Booster

Description

Panda vacuum boosters are dry-

running and used together withbacking pumps in all rough and

fine vacuum applications where

high pumping speeds are required.

Panda vacuum boosters work

completely contact-free and

without seal fluids such as oil or

water in the working chamber.

Thanks to the large selection of

design sizes, the suction capacity

and ultimate pressure can be

designed optimally in economic

terms, and matched exactly to the

process conditions.

The high volumetric efficiency is

a further factor that increases theeconomy of operation.

Panda vacuum boosters are safe

to operate due to the sturdy, tried

and tested design. The integrated

bypass valve makes operation

possible from atmospheric pressure

to ultimate vacuum.

Thanks to variable, horizontal or

vertical pumping direction, the

Panda is application oriented.

Features and Options

• Vertical flow

• Horizontal discharge available

• Integral bypass valve

• Sealing rings prevent oil from

entering pumping chamber

• Gauge ports for auxiliary

instrumentation

• Double shaft seals on drive

shaft prevent air leakage

• C flange, direct-drive motor

• Modular design with O-ring

seals permits easy service

• Optional temperature switch• Optional water-cooling of

oil sumps

• Oxygen version available

• Food Packaging version avaliable

Panda WV 1000



Operating Principle


Operating Principle

Panda vacuum boosters work with two

rotary lobes arranged parallel androtating in opposite directions of

rotation.

During the contact free rolling process,

the conveyed volume is separated

off on the inlet side between lobe

and housing and then pumped to the

pressure side. No lubricants or

sealants are required in the pumping

chamber for the contact free operation.

Panda vacuum boosters have a bypass

valve fitted as a standard feature

which limits the differential pressure

between the inlet and the outlet.

Function of the bypass valve

The bypass valve consists of a

connection between inlet and pressuresides of the Panda, which is located

outside of the conveying chamber.

A mechanical valve is built into this

connection and opens when the pressure

difference is exceeding the determined

maximum value. This allows that part of

the pump gas to be returned to the inlet.

This bypass valve allows the operation

of the vacuum booster together with the

backing pump at atmospheric pressure,

avoiding any overload of the pump or

the motor. The main advantage is to

allow the booster to cycle frequently

between higher and lower inlet pressures

without turning the motor off.

Applications

Panda vacuum boosters are used

together with other vacuum pumps(backing pumps) in vacuum systems or

vacuum pump groups.

Oil-lubricated rotary vane vacuum

pumps of the R 5 series or COBRA dry

screw vacuum pumps are suitable as

backing pumps. Ideal applications

include those where high speed

evacuations to low ultimate pressures

are required in a frequent cycle.

1. Rotor

2. Inlet

3. Outlet

4. Cylinder

2

1

4

3



Technical Data

Panda Model WV 0500 WV 1000 WV 1500 WV 2000

Nominal displacement CFM 353 765 1060 1530

Maximum leak rate Torr-CFM 2.8x10-2 2.8x10-2 2.8x10-2 2.8x10-2

Maximum differential Pressure Torr 40 32 32 32

Motor Size HP/Kw 3/2.2 5/4 7.5/5.5 10/7.5

Rotational Speed RPM 3600 3600 3600 3600

Approximate module weight Lbs 315 520 634 1200

Oil Capacity Qt 1.25 3.2 3.2 5

Technical Data

0.001 0.01 0.1 1 10 100 1000

0

10

20

30

40

50

60

70

80

90

100

110

120

A

B

C

D

Booster Displacement

Booster/Pump Characteristic Curve

Inlet Pressure (Torr)

Pumping Speed (% of Booster Displacement)

Performance data based on ambient conditions of 14.7 PSIA and 70º F, and have a tolerance of +/-10%.

Actual performance curve will depend on thebooster model, the backing pump performancecurve and additional factors.

Consult the factory for actual curve andapplication of vacuum boosters.

A =

B =

C =

D =

Bypass valve cracking point - Dependanton differential pressure of valve and thevolumetric ratio (V1/V2) (booster/pump).Flow @ atmospheric pressure - Dependantprimarily on backing pump capacity.Nominal flow of booster - Dependantprimarily on the displacement of thebooster and the capacity of the backing

pump selected.Ultimate pressure - Dependant primarilyon the ultimate pressure of the vacuumpump selected and the volumetric ratio.


http://slidepdf.com/reader/full/panda-data 4/4Panda-02-04/09Models and specifications are subject to change without notice

Dimensions

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Busch LLC 516 Viking Drive Virginia Beach, VA 23452

Phone (757) 463-7800 FAX (757) 463-7407

Busch - all over the world in industry

www.buschusa.com1-800-USA-PUMP

ISO 9001 Registered Company

®

*All dimensions in inches unless otherwise noted.

WV 0500

WV 1000

WV 1500

WV 2000

11

3" ANSI inlet

18M12

M12

M12

M12

1

38 1/4

13 5/8

7 3/4

8 3/43 3/8

4 1/4

3" ANSI outlet

1 6

1 / 4

1 4

5 / 8

7

3 / 8

4" ANSI outlet

4" ANSI inlet

11

Optional2"ANSIoutlet


15 7/8

7 1/8

1 5/8

8

7 /

8

5

1 / 2

1 9

5 / 1 6

12 1/4

24 1/4

42 1/2

5 1/8

4" ANSI outlet

4" ANSI inlet

12 3/4

24 1/2

46

4 1/2

20 1/4

9 5/8


10 1/44 1/2

2 1

1 / 8

9

1 / 2

5

3 / 4

6" ANSI inlet

4" ANSI outlet

29

54

2 5

16 3/8

7 11/16

22 1/4

12 1/2

15 3/4

4 5/8

3 3/8

8

1 / 2


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