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MTR vertical multi-stage centrifugal pumps

MTR vertical multi-stage centrifugal pumps is designed for mounting on top of tanks with the pump unit immersed in the liquid to be pumped. The pump consist of motor and the pump unit. Depending on the solution required, the length of the immersed pump unit can vary.

  • Product ID : 712-713
  • Categories : oil and gas | petrochemical | food industries | medical sector | drilling
  • Company : Grundfos holding
  • Description
  • Specification
  • DESCRIPTION

    MTR vertical multi-stage centrifugal pumps is designed for mounting on top of tanks with the pump unit immersed in the liquid to be pumped. The pump consist of motor and the pump unit. Depending on the solution required, the length of the immersed pump unit can vary.

    The MTR range offers a broad range of high efficiency pumps of different immersible length for varying flow and pressure requirements of up to 102 m³/h (1700 l/min) and pressures up to 35 bar. MTR pumps are available as a customised solution in cast iron or stainless steel and in number of variants.

    In addition to machine tool, wash and clean applications, and the circulation of cooling liquids, MTR pumps are also used as condensate or filter pumps. They are well suited for water treatment applications as well.

     

    The MTR range is also available:

    • With drainage back to tank solution
    • As completely enclosed for temperatures up to 120 °C
    • For horizontal installation in the side of the tank
    • With explosion-proof motors, ATEX-approved pump/motors

     

    Specifications:

    • Motor: Standard IE3 motor (MTR) and with an integrated frequency converter for IE5 motors (MTRE) available for global voltage with single and three-phase motors. Motor protection from Klixon, PTC and PT100 or the frequency converter. Enclosure class IP55 as standard. Available in a tropicalised variant for condensing environments.
    • Pipe connections: Internal thread: Rp, G, NPT Flange connection: square flange, EN/DIN, JIS and ANSI
    • Variable length: To reach the exact depth of tank, the immersible length can be extended up to 1.5 m, depending on pump size
    • Seal solution: A wide range of balanced cartridge shaft seals with different seal faces such as Silicon Carbide, Carbon and Tungsten Carbide to handle almost any industrial liquid. Drainage back to tank solution.
    • Inlet: Fitted with a suction strainer that prevents large solid particles from entering and damaging the pump. The size of the passage in the strainer and the impeller depends on the pump size. The special priming screw allows for liquid levels down to 25 mm.

     

    MTR – Drainage back to tank:

    Leak-free pumps are a top priority in any industrial process. Leaking pumps may lead to costly downtime and in turn affect part cost. The MTR DBT (Drainage Back to Tank) pump effectively eliminates that risk, as the liquid remains in the tank where it is supposed to be – even if the shaft seal is worn out and starts to leak. In addition to being leak-free, the MTR DBT pump features an innovative frequency drive motor that reduces energy consumption to reduce further part costs.

    • Downtime risk due to leakage is eliminated
    • No risk of contamination
    • Longer service intervals
    • Reduction of part costs
    • Non-sticking solution for the shaft seal on startup

     

    MTRE – Integrated frequency converter

    An E-solution means electronic control and energy savings. This all-in-one solution with pump, motor and integrated frequency converter is packed with intelligent features that makes installation, operation, and service exceptionally easy and performance much more efficient and reliable. The compact, integrated design comes with one drive for use worldwide and complies with all international standards.

    • IE5 motor with an integrated frequency converter
    • Sensors
    • BUS communication
    • Pump motor monitoring and protection

     

    MTRE – Run at power limit

    In certain applications you need to increase pressure as you wish. Customised software allows the pump’s RPM to be practically doubled, and the increased speed – referred to as over-synchronous operation – translates into greatly increased pressure and means you get the high pressure you need from a significantly smaller pump. This can be achieved because the pump does not need to perform across the full pump curve. Instead, the software lets the pump operate only within the necessary band with perfect precision.

    • Run at power limit
    • Makes it possible to boost the pressure at lower flows by increasing the frequency
    • Makes it possible to use the motor 100% over the full pump curve
    • Smaller and more compact pump

     

    MTRE – High pressure

    This variant of the MTRE pump with integrated frequency converter is especially designed for applications requiring high pressure. This is obtained by high-speed operation of the motor and reinforced components in the pump, while keeping the general features from standard MTRE pumps.

  • SPECIFICATION

    Flow rate max 102 m³/h (1700 l/min) (MTRE)
    max 8 m³/h (133 l/min) (MTRE-HS)
    Head max 300 m (MTRE)
    max 370 m (MTRE-HS)
    Motor 0.37-22 kW (MTRE)
    4-7.5 kW (MTRE-HS)
    Liquid temp. -10 °C to +90 °C (+120 °C) (MTRE)
    -10 °C to +90 °C (MTRE-HS)
    Pump sizes 11 (MTRE)
    3 (MTRE-HS)

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