Roto Progressive Cavity Screw Pump RL Series

ROTO RL Series

FEATURES

• Progressive Cavity Pumping Principle - The pumping element comprises of a precision machined single external helix metallic rotor, and a double internal helix elastomer stator. Due to the special profile of the rotor and stator set, a sealing line is formed along the axis of the rotor which is maintained at both static and dynamic conditions. As the rotor turns within the stator, these cavities progress from the suction to the discharge end of the pump carrying the fluid.
• Positive Displacement - Because of single rotating element, progressive cavities are generated which deliver a uniform, metered and non-pulsating flow. The head developed is independent of the rotational speed, where as the capacity is proportionate to the speed.
• Self priming - Inherently self-priming, the pumps can work on shore and do not require foot valve.
• Non-Clogging - Can handle solid in suspension or medias containing a high percentage of solids.
• Low NPSH Requirement - Suction lift capabilities of up to 9.5mwc and effective in high vacuum conditions.
• Low Internal Velocity - Minimum degradation of share-sensitive media, and can also handle highly viscous materials having pseudo-plastic characteristics.
• Reversible- Due to the reversible rotation capabilities, progressive cavity pumps can perform with equal efficiency in either direction.
• Silent Running - Rotors turn inside a resilient stator and thus generate little noise.
• Separate Bearing Housing - Fluids can be pumped without no contamination.
• Optimized Rotor Stator Geometry - Improved Rotor - Stator geometry minimizes wear due to lower rubbing velocities as compared to conventional geometry, particularly useful in abrasive applications, lower starting torque and effective sealing line (Zero Leakage) improves volumetric efficiency, resulting in reduced power consumption and extended service life
• Improved Pump Housing - A sloped housing design reduces entry losses, facilitates easy drainage. Its flexible housing orientation allows the suction port to be rotated in steps of 90° to suit any installation.
• Tapered Entry Stator - Facilitates easier entry for fluids, Improves suction capability
• Close Coupled - Motor lantern designed to accommodate various construction of drives reduces the overall length and leads to ease of maintenance.
• Cardan Universal Joint - The Cardan type universal joint used in this pump is acknowledged to be far superior to the conventional gear joint, or single pin & bush joint which is subjected to extreme concentrated loads, resulting in high wear rates. The Cardan type of UJ joint employs two sets of perpendicular pins, each providing freedom of angular movement, which facilitates smoother transmission of angular loads. The Cardan type UJ joint is also designed to withstand high axial forces which are dominant in Progressive Cavity Pumps.
• Smarter Shaft Sealing - The externally mounted stuffing box enables easier maintenance of Gland Packing or Mechanical Seals, without the need to dismantle the bearing housing.