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
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Operating Principle
Rotary Lobe Vacuum Booster
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
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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.
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Dimensions
Amsterdam Barcelona Birmingham Basel Brussels Dublin Göteborg Helsinki Istanbul Copenhagen Kuala Lumpur Milan Maulburg Melbourne Montreal Moscow
New York New Plymouth Oslo Paris San Jose São Paulo Seoul Singapore Taipei Tokyo Vienna
Rotary Lobe Vacuum Booster
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
Optional4"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
Optional4"ANSIoutlet
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
Optional4"ANSIoutlet