Acid Pumps  Manufacturers, Traders, Suppliers

WITTE offers pumps for applications in borderline areas. We develop durable, standardised or customised solutions of the highest precision. For more than 35 years WITTE has specialised in the development of gear pumps for industrial applications. It is our endeavour to always guarantee the customer the highest level of process reliability and to match the pumps exactly to the application and the process. In this way we guarantee the best efficiency and durability of our pumps. Reduced maintenance costs and intervals due to matched material pairings guarantee a fast payback the investment costs. We have been working successfully for many years with well-known companies and innovation drivers from the industry and are constantly developing new solutions. Should we not have the right solution at hand, we develop together with our customers the suitable product. We accompany our customers during the entire project from the prototype to the final product. Experts from sales, project management and design form the project and development team and keep us informed of the project status at all times. More than 35 years of experience and the knowledge of our competence team flow into each of our pumps.

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
Operating Parameters
Viscosity
0.5 to 10000000 mPas (cP)
Temperature
Up to 300°C  (580°F) · higher temperatures upon request
Inlet pressure
Vacuum of max. 15 bar (215 psig), higher with magnetic drive
Conveying Pressure / Differential Pressure
Up to 120 bar (1740 psig)
The values listed are maximum values and must not coincide under certain circumstances.
Pump Sizes
From 22/6 (1.28 ccm/rev – 20 l/h) to 280/280 (12000 ccm/rev – 170000 l/h).
Mechanical Seals Single mechanical seal (ED)
Suction pressure: up to 15 bar (abs.) (215 psig)
Viscosity: 0.2 – 5000 mPas
Temerature: max. 300°C (580°F)
Single mechanical seal with buffer fluid (AD)
Suction pressure: vacuum to max. 5 bar (abs. (75 psig)
Viscosity: 0.2 – 1000000 mPas
Temerature: max. 250°C (500°F)
Double mechanical seal with buffer fluid (DD)
Suction pressure: vacuum to max 15 bar (abs.) (215 psig)
Viscosity: 0.2 – 10000000 mPas (cP)
Temerature: max 300°C (580°F)
CHEM MAGNET – with magnetic coupling – 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.

Organic and inorganic chemicals
Alcohols · additives · bases · esters · glycerine · resins · hardeners · isocyanates · monomers · oils · phenol · acids · biodiesel · asphalt · bitumen · tar · hotmelt · glues · waxes · etc.
Polymers
Celluloseacetate · Nylon 66 · prepolymers · etc.
Food industry
Vegetable oils · butter · margarine · flavourings · chocolate · fudge · liquorice · chewing gum · vitamins · syrup · gelatine · etc.
Pharmaceutical and Cosmetic Products
Amino acids · lotions · shampoo · vitamins · etc.

Drum pump from JESSBERGER is suitable for pumping low-viscosity media such as acids, alkalis and cleaning agents (with pumping unit made of polypropylene), highly aggressive chemicals (with pumping unit made of PVDF), mineral oil products up to 1,000 mPas (with pumping unit made of aluminum) or flammable media as well as foodstuffs (with pumping unit made of stainless steel 1.4571).

• Water Care & Cleaning

• Technology and pool equipment

Barrel pumps made of polypropylene allow a fast transfer of liquids from barrels, canisters and tanks. The good chemical resistance of PP allows acids, alkalis and aggressive detergents to be transferred.

Battery pumps are portable, battery-operated pumps that can be used in a variety of applications. They are ideal for transferring liquids such as water, chemicals or fuels, especially in places without a power supply. Thanks to their compact design and easy handling, battery pumps are mobile, flexible and practical for use in agriculture, horticulture, on construction sites or in emergency situations. Important features include their efficiency, easy maintenance, robust materials and long battery life. Battery pumps offer a reliable solution for fast and uncomplicated fluid transport.

• chemical industry
• water treatment
• electroplating and surface treatment
• food and beverage industry
• pharmaceutical industry
• battery production and recycling
• laboratory and research applications

For decades SAWA pumps have been meeting the highest demands. They are characterised by their particularly gentle delivery, quiet operation and durability against aggressive or abrasive media. They set the benchmark in numerous industries in terms of lifetime and ease of maintenance.

• Food industry
• Beverage industry
• Pharmaceutical industry
• Chemicals and industry
• Feed industry