Twin Screw Pumps
TSP
Roto Gear Timed Dual-Flow Twin Screw Pumps is dependent on the rotation of two
screw spindles in closed compartment. Wherein, a predefined 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. The 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. These pumps widely
confirm to API 676, 3rd edition and are ATEX and CE certified.
Flow Rate
Up to 940 m3/h
Viscosity
Up to 100,000 cST
Pressure
Up to 40 Bar
Temperature
Up to 350C
Horizontal External Bearing
Horizontal Internal Bearing
Vertical Twin Screw Pump
Long and Trouble-Free Service Life
Due to absence of metal to metal contact between the pumping
elements, Pump can even run dry for limited period of time.
No Axial Thrust
Dual flow of liquid in opposite direction balances the axial thrust.
Higher Volumetric Efficiency
Due to special double profile of screw flanks high cavitation free suction lift.
Due to Low NPSH Requirements.
Self-priming and capable of handling entrapped air Due to positive displacement action.
Uniform Metered Flow
Being a positive displacement pump, head developed is independent of
speed & the capacity is approximately proportional to speed.
Capable of Handling Wide Variety of Fluids
Clear Lubricating/non-lubricating as well as aggressive liquids can be
handled due to choice of different designs and material of construction.
Safe to Operate
Built-in relief valve designed to bypass excessive pressure developed in the discharge.
Self Priming & Capable of Handling Entrapped Air/Vapour/Gas
Due to positive displacement action and being inherently self priming.
