584,861 active members*
5,092 visitors online*
Register for free
Login Register
Maag Witte GmbH Products
Maag Witte GmbH
Pumps

POLY - Discharge Gear Pump

Bis 40.000.000 mPas
Bis 350 °C
Von Vakuum bis max. 15 bar(a)
Bis 250 bar(a) aufgeführte Werte sind Maximalwerte und dürfen unter Umständen nicht gemeinsam auftreten.
Von 4,7-22-22 (4,7 ccm/U – 10 kg/h) bis 12.000-280-280 (12.000 ccm/U – 30.000 kg/h). Zwischengrößen mit breiteren Zahnrädern für geringere Differenzdrücke sind standardmäßig erhältlich, z.B. 152/254 (3.170 ccm/U).
POLY - Discharge Gear Pump POLY high-pressure gear pump for the discharge of medium to high viscosity media from the reactor. The extra large inlet opening guarantees an even flow of product to the gearwheels even under vacuum or extremely low NPSH conditions. Offered with either a round inlet port, by means of which the suction flange of the pump is directly connected to the outlet flange of the reactor or as a low NPSH version, where the pump is connected between the pump and reactor flanges, in order to achieve an even larger and shorter inlet port. Technical Features Housing Non-alloyed and alloyed steels · cast steel · with optional surface coating Gears Nitrated steel · tool steel · special steel · with optional surface coating · helical gearing · herringbone gearing Friction Bearings Tool steel · NiAg (nickel-silver) · Al-bronze · special materials · with optional surface coating Shaft Seals (Vacuum) viscoseal · stuffing box · combination of viscoseal and stuffing box · double-action, buffered mechanical seal Heating Systems Heat transfer oil · steam Application Examples Polymer processing There are two types of Poly: a) Standard design: The suction flange is also the fastening flange to the reactor. b) The Low NPSH design: In this case, the fastening flange is designed as an alifning flange and is seated on the delivery side of the pump. The pump is clamped between the aligning flange and the reactor flange. This design provides an extremly large and short suction opening, promotin product flow. The opening can be circular, squate or rectangular. Low NPSH Version The loss of pressure on the suction side of the pump is dependent upon a number of factors. Parameters like viscosity and flow rate are largely predetermined by the process. According to the Hagen-Poiseuille equation, the pressure loss is linearly proportional to the length of the inlet path and inversely proportional to the fourth power of the diameter. The unique WITTE low NPSH version utilises this knowledge and offers an extremely large diameter, short suction inlet. With the Low NPSH version, the connecting flange is foreseen as a loose flange and is located on the pressure side of the pump. The pump itself is connected between the loose flange and the reactor flange. This configuration allows an extremely large diameter, short suction inlet to be incorporated into the housing. The shape of the inlet is variable and can for example be round, quadratic or square. Due to the fact that the pressure losses at the suction side have been reduced to a minimum, even critical applications can be reliably realised, e.g. discharging high viscosity or foaming melts.
Product details Homepage Datasheet Product request
BOOSTER Gear pump for polymer processing
BOOSTER Gear pump for polymer processing
Gear Pump
Maag Witte GmbH
Pumps
Bis 40.000 Pas
Bis 350 °C
Vakuum bis max. 120 bar
Bis 250 bar
Von 4,7-22-22 (4,7 ccm/U – 10 kg/h) bis 12.000-280-280 (12.000 ccm/U – 30.000 kg/h)
The reliable transfer and booster gear pump. BOOSTER gear pumps are used in the polymerisation process, to boost the pressure of medium to high viscosity media. They transport pre-polymers and polymers, e.g. PET, PBT, PS, ABS any many more, very gently Heating is either by way of heat transfer oil or steam. The core components like shafts and friction bearings originate from the WITTE building block system. Technical Features Housing Heat resistant carbon steel, e.g. 1.6582 · rust-free stainless steel 1.4313 · with optional coating Gears Tool steel · nitrated steel · special steel · with optional surface coating · helical gearing · herringbone gearing (for extremely low-pulsation conveyance) Friction Bearings Tool steel · NiAg (nickel-silver) · Al-bronze · special materials · with optional surface coating Shaft Seal Viscoseal · stuffing box · (Vacuum viscoseal) Heating Systems Heat transfer oil · steam
  • BOOSTER gear pump
  • BOOSTER gear pump
  • BOOSTER gear pump
Product details Homepage Datasheet Product request
CHEM gear pump for the chemical industry
CHEM gear pump for the chemical industry
Pump
Maag Witte GmbH
Pumps
0,5 bis 1.000.000 mPas
Bis 300°C · höhere Temperaturen auf Anfrage
Vakuum bis max. 15 bar, Magnetantrieb auch höher
Bis 120 bar
Von 0,2-9-5,5 bis 12.000-280-280
CHEM – high precision gear pump for conveying low to medium viscosity fluids Chemical Pumps for safe and relaible metering tasks CHEM gear pump for conveying and metering of fluids with low medium 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 production of polymers. Decades of experience in construction and an optimum selection of materials, make this type of chemical 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 conveying butter, margarine or vegetable oils. Chemical pumps of this type can be supplied with or without heating. The WITTE modular construction system for friction bearings, gear and shaft seals offers a maximum of flexibility for the end customer. Technical Features Housing Non-alloyed and alloyed steels · tantalum · titanium · Hastelloy · ceramic Gears 1.4112 but also all other processable ceramics and metals, e.g. 1.4571, Ferralium, ferro titanite Hastelloy, etc. · with optional surface coating · spur gearing Friction Bearings Carbon · NiAg (nickel-silver) · silicon carbide · zirconium oxide · tool steel · Al-bronze · special materials · with optional surface coating Shaft Seals Single mechanical seal (ED) · Single mechanical seal with buffer fluid (AD) · Double mechanical seal with buffer fluid (DD) · magnetic coupling · stuffing box · viscoseal Heating Systems Steam · water · heat transfer oil · electrical
  • CHEM magnetic coupling
  • Standard Heating
  • Premium Heating
  • hydraulic Heating
  • Single mechanical seal
  • Double mechanical seal
  • Vacuum mechanical seal
  • magnetic coupling
Product details Homepage Datasheet Product request
EXTRU melt pump for extrusion
EXTRU melt pump for extrusion
Gear Pump / Melt pump for extrusion
Maag Witte GmbH
Pumps
EXTRU melt pump for extrusion
Bis 40.000 Pas
Bis 400 °C
Vakuum bis max. 120 bar
Bis 250 bar Sonderausführungen auch für höhere Differenzdrücke
Von 4,7-22-22 (4,7 cm3/U – 10 kg/h) bis 12.000-280-280 (12.000 ccm/U). Zwischengrößen mit schmaleren Zahnrädern für höhere Differenzdrücke sind möglich, z.B. 690-140-90.
EXTRU - The reliable melt pump for extrusion The EXTRU is mainly used in conjunction with extruders or kneaders. It reduces the natural pulsation and irregular conveyance, particularly in single-screw extruders, added to which, the build up of pressure in the gear pump is more efficient in comparison to the extruder. Because of this, less energy or heat is transferred into the polymer and the product is conveyed in a gentle manner. The EXTRU melt pump is indispensable for the manufacture of precision films or micro granulate. The robust construction and low wear materials make the EXTRU indispensable for extrusions. Special versions are available for conveying natural rubber and soft PVC. The WITTE quick colour change version lends itself particularly to master batch applications with frequent changes of colour. In order to prevent the extrusion pump's drive shaft from being driven/pushed out of the housing when there is a high pressure on the suction side (extruder conveying pressure), the drive shaft must be relieved. It protrudes from both sides of the housing and is sealed, so that atmospheric pressure predominates on both sides of the drive shaft. The shaft is thus relieved. Technical Features Housing Heat resistant carbon steel, e.g. 1.6582 · rust-free stainless steel 1.4313 · with optional coating Gears Tool steel · nitrated steel · special steel · with optional surface coating · helical gearing · herringbone gearing (for extremely low-pulsation conveyance) Friction Bearings Tool steel · NiAg (nickel-silver) · Al-bronze · special materials · with optional surface coating Shaft Seal Viscoseal · stuffing box Heating Systems Electrically with heating cartridges · optional cover heating
  • EXTRU
Product details Homepage Datasheet Product request
PURO food stuff pumps
PURO food stuff pumps
Gear Pump
Maag Witte GmbH
Pumps
PURO food stuff pumps
Bis 500.000 mPas
Bis 200 °C
Vakuum bis max. 15 bar
Bis 135 bar
Von 1,78-22-13 bis 3200-180-180
From 22/13 to 180/180.
PURO – Precision gear pump for the food Industries Easy to clean and individually tuneable Stainless steel precision gear pump for conveying and metering of fluids with medium to low viscosity. Through decades of experience in design and selection of optimal materials, this type of pump suitable for even the toughest of tasks and impresses with its reliability and metering accuracy in the vacuum as well as high-pressure applications. Typical areas of application for this type of pump are to be found in the cosmetic and food industries e.g. for conveying butter, margarine or vegetable oils. Pumps of this type can be supplied with or without heating (hydraulic or electric). The modular construction system for WITTE bearings, gears and shaft seals offers a maximum dimension of flexibility for the user. For better cleaning the pump has different flushing connections. An industry leading special design of this pump helps to minimize dead spots. Technical Features Housing stainless steel • tantalum • titanium • hastelloy Gears DIN 1.4112 standard • examples of optional materials include ferralium • DIN 1.4571 • hastelloy • ferro titanite • and other available included coated options Friction Bearings NiAg (nickel-silver) • zirconium oxide • silicon carbide • other materials on request Shaft Seals Single mechanical seal • magnetic coupling • mechanical seals of other suppliers are available as an option (with FDA approval) Heating Systems hydraulic or electric Application Examples Food industry vegetable oils • margarine • flavourings • fudge • liquorice • chewing gum • vitamins • syrup • gelatine • mustard • ketchup • sugar solution
  • Single mechanical seal
  • Double mechanical seal
  • Vacuum mechanical seal
  • magnetic coupling
Product details Homepage Datasheet Product request
CHEM MAGNET
CHEM MAGNET
Pump
Maag Witte GmbH
Pumps
CHEM MAGNET
Chemical gear pump with magnetic coupling CHEM MAGNET – seal design for safe operation with critical media The CHEM Magnet is in principle constructed in the same way as the CHEM but with a synchronous magnetic coupling forming the shaft seal. This operates slip-free, i.e. the pump speed is always the same as the shaft speed, as long as the load torque does not exceed the nominal torque of the magnetic coupling. The magnetic coupling lends itself to conveying poisonous or flammable substances, as well as for operation at high system pressures. Special versions can be used for inlet pressures of up to 700 bar (10152 psig). The containment shell of the magnetic coupling can be of the double-walled type. The double wall serves heating the coupling can. The double-walled containment shell can be provided with a leakage-monitoring system for particularly critical processes. The containment shell is filled with inert gas, in order to detect damage. If this gas escapes to the inside or outside, depending upon which wall is damaged, a pressure sensor will trigger an alarm. Because one wall of the double-walled containment shell is still intact, the possibility of the hazardous medium being conveyed leaking into the environment will be eliminated. A particular highlight of the WITTE - Magnetic Coupling is the inner magnetic rotor's separate bearing. This ensures that only torque is transferred to the pump's drive shaft. The relatively heavy weight of the inner rotor is taken up by this bearing, thus relieving the pump's bearings. WITTE's flange bearing design offers the additional advantage of preventing the inner totor from touching and damaging the containment shell. In competitor´s design it is possible for the inner rotor to touch the containment shell after pump bearings wear. Our design provides the safty of an additional bearing to insure the inner rotor can not touch the containment shell.
  • magnetic coupling
Product details Homepage Datasheet Product request