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[ENG] CHEM Document
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CHEM
High precision gear pump
for the chemical industry
BOOSTER
CHEM
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viscosity. The application range goes from classic transfer and metering tasks
in the chemical and pharmaceutical industries up to the conveyance of
monomers, oligomers and prepolymers during the polymerization process.
Decades of experience in design and an optimum selection of materials,
make this type of pump suitable for even the most demanding tasks and
are outstanding in their reliability and metering precision in both vacuum and high pressure
applications. Typical areas of application for this type of pump are to be found in the chemical, cosmetic, food,
petrochemical and polymer industries. The CHEM series is also suitable for the food industry, e.g. for convey-
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the end customer.
Technical Features
Housing: Stainless steels, carbon steels, tantalum, titanium, Hastelloy ) 2h, ceramics
Gears: 1.4112 (440B) but also all other processable ceramics and metals,
e.g. 1.4571 (316Ti), Ferralium
) 2h, Ferro Titanite ) 2h, Hastelloy ) 2h, etc.,
optional: surface coating, spur gearing
Friction Bearings: Carbon, NiAg (nickel-silver), silicon carbide (SIC), zirconium oxide, tool steel,
Al-bronze, special materials,
optional: surface coating
Shaft Seals: Internal single mechanical seal (ED),
% A? % A? % A? % A? ?B?P8Ha
% A? % A? % A? % A? 2#42?5Rp
% A? % A? % A? % A? 1xf
Heating Systems: % A?% A? % A?AQ?T4?I#4
Operating Parameters
Viscosity: 0,5 to 1.000.000 mPas
Temperature: Up to 300 °C (580 °F), higher temperatures upon request
Suction Pressure:% A?% A? % A? ?qs)`0
Differential Pressure: Up to 120 bar (1.740 psig)
The values listed are maximum values and must not coincide under certain circumstances.
Pump Sizes
From 22/6 (1,28 cm 3/rev) up to 280/280 (12.000 cm 3/rev).
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3/rev).
Application Examples
Organic and Inorganic Chemicals:
Alcohols, additives, bases, esters, glycerine, resins, hardeners, isocyanates,
monomers, oils, phenol, acids, biodiesel, asphalt, bitumen, tar, hotmelt, glues,
% A? % A? % A? ?&f`
Polymers: Celluloseacetate, Nylon 66
) 2h, prepolymers, etc.
Food: @?60 ?(% A? % A? % A?
% A? % A? % A? $?
Pharmaceutical and Cosmetic Products:
Amino acids, lotions, shampoo, vitamins etc.
Mechanical Seals
Suction Pressure:
Up to 15 bar
(abs) (218 psig)
Viscosity:
0,5 - 50.000 mPas (cP)
Temperature:
max. 300 °C (580 °F)
Single mechanical seal (ED)
Suction Pressure:
Vacuum to max. 15 bar
(abs) (218 psig)
Viscosity:
0,5 - 1.000.000 mPas (cP)
Temperature:
max. 300 °C (580 °F)
Double mechanical seal
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Suction Pressure:
Vacuum to max.
atmosph. pressure (abs)
Viscosity:
0,5 - 100.000 mPas (cP)
Temperature:
max. 200 °C (392 °F)
Single mechanical seal
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Seals
The CHEM MAGNET is in general designed in the same
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magnetic coupling as shaft seal. This operates slip-
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drive speed.
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at high system pressures. Special versions can be used for inlet pressures of up to 500 bar (7.252 psig).
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A particular highlight of the WITTE Magnetic Coupling is the inner magnetic rotor‘s separate bearing. This
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is taken up by this bearing, thus relieving the pump‘s bearings.
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damaging the containment shell. In competitors design it is possible for the inner rotor to touch the contain -
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inner rotor can not touch the containment shell.
Pump Sizes
From 22/6 (1,28 cm 3/rev) to 180/180 (3.200 cm 3/rev).
The values listed are maximum values and must not
coincide under certain circumstances.
Technical Features
Housing: Stainless steel, tantalum, titanium, Hastelloy ) 2h, ceramic
Gears: 1.4112 (440B) but also all other processable ceramics and metals,
e.g. 1.4571 (316Ti), Ferralium
) 2h, Ferro Titanite ) 2h, Hastelloy ) 2h etc.,
optional: surface coating,
spur gearing
Friction Bearings: Carbon, NiAg (nickel-silver), silicon carbide (SIC), zirconium oxide, tool steel,
% A? % A? % A? % A? )Ir?f
Heating Systems: Water, heat transfer oil
Operating Parameters
Viscosity: 0,5 to 30.000 mPas (cP)
Temperature: Up to 350 °C (662 °F)
Suction Pressure: Vacuum to max. 500 bar
(7.252 psig)
Differential Pressure : Up to 120 bar (1.740 psig)
Inner rotor MagnetsFlange bearing
Vent
Bearings
Driven shaftDrive shaft
Containment shell
Outer rotor
ill. CHEM MAGNETIC COUPLING
Metering System
The WITTE metering system (WDS) enables precise
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series connected gear pumps, one measuring and one
pressure boosting pump are precisely controlled by a PLC
control system, such that a precision of better than 0.1%
is achieved, depending upon the medium.
Special Pumps
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special pumps, e.g. made of ceramic, tantalum, titanium or
immersion pumps. Many of these pumps are custom built to
35R??-
ters. WITTE for example produced one such pump, made
completely of ceramic, for transporting a highly corrosive
medium at temperature 550° C.
Metering Systems / Special Pumps
Special pumps examples
SizeABC D "C1? 2V$‘GH IJ KK1 LL1 MWeight
1/1 (22/6) 20011 611 2 80 20/15 1118 4011 0 983 11 0 120 147 856 Kg
1/2 (22/13) 20011 611 2 80 20/15 1118 4011 0 986.5 113.5 127154 856 Kg
1 (22/22) 200180 11 2 80 21.3 1118 4011 0 991 11 8 136 163 856 Kg
2 (28/28) 235208138108 33.7 162240130 11109 138160189105 15 Kg
3 (36/36) 250214152 11 4 48.3 191660140 12124 157188221 11 0 20 Kg
4 (45/45) 234244176134 60.3 242575170 14148 186226265135.5 26 Kg
5 (56/56) 360264210168 60.3 3227100 220 20195.5 239.5289.5333.5 16050 Kg
6 (70/70) 350346258208 76.1 382711 5 250 22225.5 275.5338.5388.5 191125 Kg
7 (90/90) 498416300269 88,9 4842130 310 28265 329405469237220 Kg
8 (110/110) 470488380310 114,3 6042180 410 28319 478384543287340 Kg
9 (140/140) 600538454340 168,3 7047230 430 28410 457612669344500 Kg
10 (180/180) 800*
1 590440 219,1 * 2 65285 520 33617 617902902450700 Kg
Size Spec. displacement
volume (cm 3/rev) Capacity (l/h)*
1/1 (22/6)
1,2820 - 200
1/2 (22/13) 2,7840 - 400
1 (22/22) 4,770 - 700
2 (28/28) 10,2140 - 1400
3 (36/36) 25,6280 - 2800
4 (45/45) 46,3410 - 4100
5 (56/56) 92,6650 - 6500
6 (70/70) 176990 - 9900
7 (90/90) 3711600 - 16200
8 (110/110) 7162500 - 25300
9 (140/140) 1.3423800 - 37800
10 (180/180) 3.2006900 - 69100
11 (224/224) 6.10011000 - 106000
12 (280/280) 12.00017000 - 170000
CHEM Dimensions
CHEM
Transfer
Metering
Pressure increase
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Operating Conditions
Size / Displacement Volume / Capacity
D L 1 L
F
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B E
C
G
K
K 1M
H
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*
1 Upon Request
*2 W100 x 2,5 x 38 / DIN 5480
Pump Sizes
10/2018 CHEM ENG PDF VERSION REV 1.2
WITTE PUMPS & TECHNOLOGY GmbH
Lise-Meitner-Allee 20
D-25436 Tornesch / Hamburg / Germany
P: +49 (0) 4120 70659-0
F: +49 (0) 4120 70659-49
info@witte-pumps.com
www.witte-pumps.com
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Produit(s) concerné(s) :
Date d'upload du document :
vendredi 14 février 2020