Roto Pumps has secured a sales order valued at INR 72.5 million from GPS Renewables Private Limited for the supply of progressive cavity pumps along with supervision support. The company stated that the order will be executed within the current financial year.
The scope of the order includes designing, engineering, and supply of progressive cavity pumps. Progressive cavity pumps, also referred to as progressing cavity pumps or eccentric screw pumps, are a type of positive displacement pump used for transferring fluids of varying viscosities, including those that contain solids or are sensitive to shear. They operate with a helical metallic rotor that rotates inside a double helical elastomer stator, creating sealed cavities that move fluid from the suction end to the discharge end. The flow rate is directly proportional to the rotor speed, which enables a low-pulsation and steady transfer.
These pumps are particularly suited for handling viscous and shear-sensitive fluids such as slurries, thick liquids, and mixtures with entrained solids. They deliver smooth and pulsation-free flow, which minimises shear and agitation, making them appropriate for applications requiring careful handling or accurate dosing. With self-priming capability, they can operate even under snore conditions without the need for a foot valve. The design ensures low shear, which is beneficial for products that must maintain structural integrity during transfer, including certain food items and emulsions. They are also capable of reversible operation, allowing fluid to be pumped in both directions.
Progressive cavity pumps are widely applied in industries such as oil and gas, food and beverage, wastewater treatment, chemical processing, and the manufacture of paints, inks, and adhesives. Their design typically features a stainless-steel single helix rotor and an elastomeric double helix stator that together form the sealed cavities. As positive displacement pumps, they can generate high pressures, enabling fluid transfer across long distances or to high elevations. They function efficiently even with low net positive suction head, which supports performance under high vacuum or suction lift conditions. Their low internal velocity also reduces wear and energy consumption when handling abrasive or viscous materials.
In comparison with centrifugal pumps, progressive cavity pumps rely on positive displacement rather than centrifugal force. They are capable of handling high and variable viscosities, as well as fluids with solids, while providing nearly pulsation-free flow. Centrifugal pumps, by contrast, are more suited to low to moderate viscosities, have limited ability to handle solids, and typically produce higher flow pulsation. Progressive cavity pumps may require more maintenance due to rotor and stator wear, but they are generally more energy efficient when working with viscous fluids. These characteristics make them suitable for applications that demand reliable performance and gentle fluid handling where centrifugal pumps may not be effective.
Roto Pumps, established in 1968, manufactures positive displacement pumps and related systems. The company operates across several sectors including waste water, renewable energy, oil and gas, food, and chemicals, serving both domestic and international markets.
