Dosing Range
The MP & LA Range forms the robust base of all ROTOMAC progressive cavity pumps. It can pump low-viscosity to viscous media, and promises high accuracy with excellent repeatability. These pumps handle the entire spectrum of fluids — from clean and clear liquids to solid-laden, abrasive, corrosive and highly viscous media.
AccuracyFlow Proportional To Speed
InstallationHorizontal Or Vertical
DesignReversible & Modular
MediaClean To Solid-Laden & Corrosive
Your Flow High Accuracy & Repeatability
Metering By Displacement, Not Valves
A progressive cavity pump displaces a fixed volume with every revolution. That single fact is what makes the Dosing Range accurate: output tracks pump speed linearly, so flow can be adjusted with ease and repeated exactly, run after run. There are no check valves to stick, clog or wear.
Both pumps convey with minimal shear effect and virtually no pulsation — so no dampeners or bellows are needed downstream — and they hold accuracy across the full spectrum of media, from clean and clear fluids to abrasive, corrosive and solid-laden product.
MP and MW share a platform. Same capacity, same pressure rating, same metering principle. What separates them is the intake — which is what determines whether the pump can be fed by a conventional suction line or needs an open hopper and feed screw.
Explore The Dosing Range
Pick by intake design — then confirm capacity, pressure and wetted materials.
MW Pumps
Designed to improve intake efficiency on highly viscous and non-flowable media such as peanut butter, molasses and resins. An open rectangular hopper directs product to an auger feed screw on the coupling rod, keeping the pumping element fully charged.
- Capacity
- 1–550 L/h
- Pressure
- ≤ 24 bar
MP Pumps
Designed with threaded connections for general purpose metering. Handles thin to viscous fluids as well as corrosive media containing solids, with components available in Hastelloy C or Titanium. Dosing accuracy to a deviation of only ±2%.
- Capacity
- 1–550 L/h
- Pressure
- ≤ 24 bar
Which Dosing Pump Do You Need?
A quick side-by-side of the two pump models. Scroll horizontally on smaller screens.
| Compare | MW | MP |
|---|---|---|
| Intake Design | Open rectangular feed hopper with auger conveying screw on the coupling rod | Conventional suction housing in stainless, threaded connections only, rotatable in 90° increments |
| Best For | Highly viscous and non-flowable product such as peanut butter, molasses and resins | Any media that will flow to the inlet on its own — thin to viscous, including corrosive and solid-laden |
| Capacity | 1–550 L/h | 1–550 L/h |
| Pressure | ≤ 24 bar | ≤ 24 bar |
| Joint / Coupling | Coupling rod with two pin joints, grease lubricated and sealed with elastomer sleeves | Yoke shaft connecting drive shaft to the joint, wear resistant coating on request |
| Shaft Sealing | Mechanical seal configurations only | Mechanical seal configurations only |
| Drive | Close coupled connection | Close coupled connection |
| Product Page | View MW → | View MP → |
Features & Benefits
What every pump in the Dosing Range shares, whichever model you specify.
Flexible
Depending on the site requirements, installation can be done in a horizontal or vertical position with a large, rotatable, spherical suction intake.
Gentle Conveying
Low shear and low speed, virtually pulsation-free pumping of low to highly viscous products.
Reversible
Suction and delivery ends can be interchanged by merely changing direction of rotation of the prime mover.
Easy Conversion
Modular components for quick and easy conversion to larger or smaller sizes.
Low Pulsing
Virtually pulsation free flow, with no need of dampeners and bellows.
Low NPSH(R)
Effective in high vacuum conditions.
Versatile Applications
Fulfills even the strictest hygiene requirements, and is therefore suitable for numerous applications in almost any kind of industry.
High Dosing Accuracy
Offers high dosing reliability — flow is proportional to speed, so it can be adjusted with ease.
Durable Materials
High corrosion resistance due to the variety of components available in Hastelloy C or Titanium.
Typical Applications
Used in virtually all industries where a precise quantity has to be delivered repeatably — from clean fluids to abrasive, corrosive and non-flowable media.
Chemical Processing
Acids, alkalis, polymers and reactive additives.
Water Treatment
Coagulants, flocculants, chlorine and pH correction.
Pharmaceutical
Active ingredient dosing and semi-solid formulations.
Food & Beverage
Flavourings, colourings, fillings and concentrates.
Paints, Inks & Coatings
Tinting, pigment dosing and resin metering.
Pulp & Paper
Sizing agents, retention aids and dye dosing.
Mining & Minerals
Reagent and flotation chemical dosing into slurries.
Cosmetics
Fragrance, pigment and thick emulsion metering.
Not Sure Which Dosing Pump?
Share your media chemistry and viscosity, required dosing rate, discharge pressure and control method — our engineers will recommend the right model and configuration for your line.
Email Us
contact@rotomac.orgCall Us
+91 7522 002204 (Sales)Head Office
D-4a, Panki Industrial Area, Site-1, Kanpur – 208022, India