Ropman Engineering Corporation is a specialized single screw pump manufacturer based in Meerut, Uttar Pradesh, India. With over two decades of manufacturing expertise, Ropman designs and produces high-performance single screw pumps — also known as progressive cavity pumps (PC pumps) or eccentric screw pumps — for industrial applications demanding gentle, efficient, and consistent fluid transfer.
Our single screw pumps are engineered to handle highly viscous, abrasive, corrosive, and solid-laden fluids with exceptional reliability. Designed using advanced manufacturing techniques and premium-quality materials, these pumps deliver a smooth, non-pulsating flow, making them ideal for applications requiring accurate dosing, low-shear handling, and continuous operation.
Ropman serves a wide range of industries, including wastewater treatment, food & beverage, pharmaceuticals, chemicals, sugar & distillery, paper & pulp, oil & gas, mining, and biogas processing. Every pump is manufactured under stringent quality standards to ensure maximum efficiency, long service life, and reduced maintenance requirements, helping industries improve productivity while lowering operational costs.
With complete in-house manufacturing of critical components such as rotors, stators, coupling rods, and joints, Ropman maintains full control over product quality and performance. Our engineering team also offers customized pump solutions tailored to specific flow rates, pressures, viscosities, and application requirements, making Ropman a trusted partner for industrial fluid handling solutions across India and international markets.
What Is a Single Screw Pump?
A single screw pump (also called a progressive cavity pump, PC pump, or eccentric screw pump) consists of a single-helix metallic rotor that rotates eccentrically inside a double-helix elastomeric stator. Unlike twin-screw or three-screw pumps, the single screw design is exceptionally well-suited for:
- Highly viscous fluids — molasses, slurries, pastes, sludge
- Shear-sensitive materials — pharmaceuticals, food emulsions
- Fluids containing soft solids or abrasives
- Applications requiring precise flow control
- Self-priming duties where suction lift is needed
Single Screw Pump = Progressive Cavity Pump
These names all refer to the same pump technology:
Single Screw Pump • Progressive Cavity Pump (PC Pump)
• Progressing Cavity Pump • Eccentric Screw Pump • Moineau Pump
Ropman — Single Screw Pump Manufacturer Since 2000
Ropman Engineering Corporation has been manufacturing single screw pumps (progressive cavity pumps) since 2000. Their ISO 9001:2008 certified facility in Meerut includes:
- In-house CNC machining of steel rotors
- Rubber compounding and stator moulding
- Hydraulic press and extruder for precision stator production
- Dedicated quality control for dimensional and material testing
This vertical integration gives Ropman a critical advantage over traders and assemblers — every component is manufactured to spec, and every pump is quality-tested before dispatch.
Ropman Single Screw Pump Range
Horizontal Single Screw Pumps
Standard industrial workhorse. Available in multiple flow and pressure ranges for general-purpose viscous fluid transfer.
Vertical Single Screw Pumps
Space-saving design for applications with limited floor area or elevated suction conditions.
High Pressure Single Screw Pumps
Multi-stage models for pressures up to 36 bar — grout injection, hydrostatic testing, chemical injection wells.
Open Hopper Single Screw Pumps
Designed for sludge, press cake, and extremely viscous materials that cannot self-feed through a standard inlet.
Sanitary Single Screw Pumps
Polished surfaces, FDA-grade stator elastomers, and CIP compatibility for food, dairy, cosmetics, and pharma.
Stator Materials Available
- NBR (Nitrile Butadiene Rubber) — General purpose, oils, hydrocarbons
- EPDM (Ethylene Propylene Diene Monomer) — Acids, alkalis, water-based fluids
- Viton (FKM) — High temperature, aggressive chemicals, solvents
- Natural Rubber (NR) — Abrasive slurries, mining applications
- HNBR — High temperature oil applications
Industries Served
- Sugar Industries — molasses, bagasse juice, clear juice
- Distilleries — fermented wash, spent wash
- Pharmaceuticals — API slurries, viscous formulations
- Food Processing — fruit pulp, tomato paste, sauces
- Municipal / Industrial Wastewater — sludge dewatering, polymer dosing
- Paints & Coatings — pigment pastes, resins
- Chemical Process Plants — corrosive liquids
- Construction — grout and mortar injection
Single Screw Pump vs. Centrifugal Pump — Quick Comparison
Feature | Single Screw Pump | Centrifugal Pump |
Viscosity | High (up to millions cP) | Low only (<500 cP) |
Flow Pulsation | Very Low | None (but cavitates) |
Solids Handling | Yes (soft solids) | Limited |
Self-Priming | Yes | Generally No |
Flow Control | VFD (linear) | Throttling / VFD |
Shear Effect | Very Low | High |