Roto Pumps Ltd.

Roto Xtra Value Progressive Cavity pumps are of heavy duty construction and are designed to pump ‘tough – to – handle’ fluids with ease. These pumps are used in many areas of Industry. The construction of these pumps is based on the modular concepts and incorporate next generation pumping elements (molded to metal) stator, solid shaft and double sealed Cardan Universal Joints for improved performance and longer service life.

These pumps are available in bare shaft and close coupled configuration. 6 and 8 stages in select sizes. A variety of material of construction, shaft sealing options are also available.

Wide Throat type inlet allows gravity flow of highly viscous (plastico – Viscous) material on to the augur-on-coupling rod which pushes the substance to the pumping element. Wide Throat Pumps with the twin paddle bridge breaker arrangement at the top are designed for handling extremely difficult media with very high solid content and non – flowing properties.

Available in close coupled and bare shaft configuration. Custom designed hopper is also available on requirement. A variety of construction materials and shaft sealing options are also available.

Standard Hopper & Oversized Hopper

Capacity: up to 200 m3/hr
Pressure: up to 36 bar

Material Options :-

WETTABLE HOUSING COMPONENTS  :  Cast Iron, Cast Stainless Steel, Fabricated Steel, Fabricated Stainless Steel

STATOR  :  Natural, Nitrile, High Nitrile, EPDM, Chloro-Sulphonated Rubber, Fluoroelastomer, Aflas, HNBR

ROTOR  :  Tool Steel, Case Hardened Steel, Alloy Steel, Stainless Steel

COUPLING ROD  :  Alloy Steel, Stainless Steel

SHAFT  :  Alloy Steel, Stainless Steel

OTHER EXOTIC MATERIALS  :  Duplex, Super Duplex, Alloy 20, Haste Alloy

ROTOR SURFACE COATINGS  :  Ceramic Coatings, Tungsten Carbide, Hard Chrome Plating

PROTECTIVE COATINGS  :  Rubber Lining, Epoxy Coatings

Source :- https://www.rotopumps.com/pd-pumps/progressive-cavity-pumps/wide-throat-pump/#1560753773066-3006bd8c-d2ff

Roto’s Vertical Twin Screw Pumps are available in both external & internal bearing configurations. These pumps are designed to suit the applications where space is a constraint. These pumps can handle fluids with high temperatures up to 3500C / 6600F with or without steam jacketing. Electrical/steam tracing arrangement is available as an option.

The mechanical seals are provided as standard. Gland packing option can also be offered as per application requirement. Also, API 682 type seals can be offered.

These pumps are built with relief valves, designed for 100% bypass. The suction & discharge ports are in-line.

Vertical Internal / External Bearing RV series

Capacities up to 1500 m3/hr
Pressures up to 40 bar

Material Options :-

CASING  :  Cast Iron, Cast Steel, Fabricated  Steel, Fabricated Stainless Steel

LINER  :  Case Steel, Stainless Steel

SCREWS  :  Alloy Steel, Stainless Steel, Hardened Steel

TIMING GEARS  :  Hardened Steel

OTHER EXOTIC MATERIALS  :  Duplex, Super Duplex

SCREW SURFACE COATING  :  Hard Chrome Plating

Source :- https://www.rotopumps.com/pd-pumps/twin-screw-pumps/vertical-twin-screw-pump/

These pumps are developed for low flow applications that demand high accuracies and repeatability with unique advantages of smooth and non-pulsating flow. These dosing pumps can handle clean and clear liquids.

The pump is ideal for either intermittent or continuous dosing duties. These dosing pumps can handle minimum flow as low as 0.68 LPH to 500 LPH & ensure proportionate dosing of media.

RJ Series Pump

Capacity: between 0.68 – 500 lph
Pressure: up to 24 bar

Material Options:- 

WETTABLE HOUSING COMPONENTS  :  Cast Stainless Steel

STATOR  :  Natural, Nitrile, High Nitrile, EPDM, Chloro-Sulphonated Rubber, Fluoroelastomer, Aflas, HNBR

ROTOR  :  Stainless Steel

COUPLING ROD  :  Stainless Steel

SHAFT  :  Stainless Steel

OTHER EXOTIC MATERIALS  :  Duplex, Super Duplex, Alloy 20, Haste Alloy

ROTOR SURFACE COATINGS  :  Ceramic Coatings, Tungsten Carbide, Hard Chrome Plating

Sealing Options:- 

• MEDIA PROPERTIES: Low to high viscosities with solids.
• APPLICATIONS: Domestic & industrial sewage treatment.
• DESCRIPTION: Single acting, unbalance, single helical coil spring .elastomeric bellow seal and bi-directional.
• PRESSURE RANGE: Up to 24 bar

Source :- https://www.rotopumps.com/pd-pumps/progressive-cavity-pumps/dosing-pump/#1560753629125-6b5c8843-406f

General Purpose pumps are designed for use where low flow transfer duties in domestic and wide range of industrial applications are required. These pumps have excellent suction lift capability up to 8 meters for water.. It is available in close coupled configurations and with standard IEC frame motors.

Capacity: up to 8 m3/hr
Pressure: up to 3 bar

Roto’s Little-Champ DC Pump range are compact, light weight and easy to maintain. 11,12 & 31 pump sizes are available with UV resistant Acetyl-co-polymer housing and 41 & 51 pump sizes are available with cast Iron housing.

Material Options:-

• WETTABLE HOUSING COMPONENTS  :  UV Resistant acetate co-polymer housing for pump sizes DC 11 & DC 31 / C.I. Housing parts for pump sizes DC 41 & DC 51
• STATOR  :  Natural, Nitrile, High Nitrile, Fluoroelastomer
• ROTOR  :  Stainless Steel
• SHAFT  :  Stainless Steel
• ROTOR SURFACE COATINGS  :  Hard Chrome Plating

Sealing Options :-

• MEDIA PROPERTIES: Low to high viscosities, with solids.
• APPLICATIONS: Domestic & industrial sewage treatment.
• DESCRIPTION: Single acting, unbalance, single helical coil spring, elastomeric bellow seal and bi-directional.
• PRESSURE RANGE: Up to 12 bar

Industries :-

• Transfer and dosing of chemicals and alkalies
• Transfer duties in food processing, winery and vegetable oils
• Drainage of septic tanks
• Feeding to oily water separators
• Drawing water from wells, creeks or shallow bores
• Hosing down of cattle and stock sheds
• Automatic water pressure systems
• Berine injection
• Fiiding ponds and sprinkler systems
• Diesel transfer
• Hndling surfactants and detergents

Source :- https://www.rotopumps.com/pd-pumps/progressive-cavity-pumps/wobble-stator-pump/#1560753629125-6b5c8843-406f

Roto MR/RM are based on classical design retaining its compact and robust construction. These pumps have combined bearing and pump housing and incorporate hollow shaft which accommodates the coupling rod, thereby reducing overall length of the pump. Standard sealing arrangement is in gland packing; however these pumps can also be supplied with mechanical seals.

These pumps are available in both free molded and molded to metal stator designs. The maximum pressure for Free Molded pump is up to 9 Bar and for molded to metal up to 12 Bar.

The working principle of Roto gear timed Dual-Flow Twin Screw Pumps is dependent on the rotation of two screw spindles in closed compartment. Wherein a pre-defined clearance is maintained between the screw spindles as well as between the outside diameter of the screw spindles and the bore of the casing/liner in which the screw spindles are located. Each half of the screw spindles is left-handed and right-handed. Thus when the spindles start rotating, driven by a pair of timing-gears located at the end of the screw spindles, the liquid is drawn towards the end of the screw spindles and entrapped between the bore of the pumping compartment as well as the flanks of the screws and is then propelled axially from both the ends towards the centre. Such a dual flow nullifies the axial thrust completely thereby enabling the screw spindles to remain in a state of hydraulic balance. Roto's unique double profile of the screw spindles contributes to a higher volumetric efficiency, thus an improved overall efficiency.

Roto Series Centrifugal Pumps are designed to handle clean water or liquid whose physical & chemical properties are similar to clean water. The maximum operating temperature is 105 degree celcius.

Capacities max upto 1200 m3/hr

Pressure upto max 16 Bar

Discharge Sizes 32 - 300 mm

These are single stage single suction back exposed centrifugal pump whose main outline dimension and gland structural dimension accord to the DIN 24255 standard.The main features of this design are increased higher efficiencies and lower life cycle costs

Globally trusted retrofit parts for all leading Progressive Cavity Pump Manufacturers

High level of Quality and Interchangeability
Ease of Operations and Complete peace of mind

Roto Gear pumps are designed to handle thinner and thicker & even corrosisive liquids having lesser or no lubrication. It can handle fluid at temperature upto 300 degree celcius.

These are compact,reliable & effcient pump capable of handling all reasonably clean liquids, non- lubricating liquids , food handling and for other corrosive liquid application. The gear pump is a precision machine with extremely tight fits and tolerances, and is capable of working against high differential pressure. It is a type of pump used for the transfer and metering of liquids.