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    5 - 20 HP Cast Iron Centrifugal Pump / Motor Units, Close Coupled, "Vac-U-Double Seal"

    Double Viton® Wet Seal • The Original Vac-U-Double Seal Pump

    The Centrifugal Pump that is designed to Outlast Your Equipment!

    When it comes to high volume transfer pumping of liquid fertilizers, agchemicals, liquid deicers, water and many other liquids, this series of John Blue Vac-U-Double Seal Centrifugal pumps is considered the leader. The patented Vac-U-Seal system is derived from an inner function of the pump. The impeller applies vacuum pressure or suction to the seal, along with a double "wet" seal, keeps harmful corrosive liquids and abrasive particles from entering the seal. This unique method of lubrication provides extended life for the seal, eliminates thrust loads increasing bearing life, and allows the pump to be operated dry without damaging the unit.

    • Patented Vac-U-Double Seal design eliminates pressure on the seal resulting in long seal life.
    • Closed type hydraulically balanced impeller eliminates thrust loads for increased bearing life. Wear actually improves impeller efficiency.
    • No adjustments of impeller necessary with shims.
    • Pump can be operated DRY without damaging the seal.
    • Cast iron heavy wall section provides extended life to unit or Polypropylene for excellent corrosion-resistance.
    • Total Dependability and Versatility.
    • Designed for Many Chemicals and Fertilizers.
    • Speeds to 3600 RPM.
    • 2 Year Unconditional Warranty (Centrifugal Pumps Only).
    • Long Coupled Units Include "Orange Peel" OSHA Approved Guard.

    Next Generation 3" Self Priming Centrifugal Pumps Feature:

    • 2-in-1 Inlet Design (patent pending). Select from (2) Inlet Locations on (1) 3" Self Priming Pump.
    • The Standard Lower Inlet (top pump), with Backflow Check Valve, Yields Maximum Pump Flow.
    • The Higher Inlet (lower pump), Allows the Outlet Lines to Drain After Shutoff While Retaining Self-Priming Capability On Next Start-Up.

    Viton® is a registered trademark of DuPont Performance Elastomers
    Manufacturer: John Blue
    0Types Available
    Picture of "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 2", 5 HP/3 PH, 1.5 Max SG, 200 Max gpm, 112 gpm @ 25 psi
    "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 2", 5 HP/3 PH, 1.5 Max SG, 200 Max gpm, 112 gpm @ 25 psi
    Centrifugal Pump, 2IN X 2IN Self Priming, Close-Coupled to 5HP, 3PH, TEFC Motor, Cast Iron, Double Viton Seal
    SKU: BUSP3240E5T3B
    $1,715.00 / EA
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    Picture of "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 10 HP/1 PH, 1.3 Max SG, 340 Max gpm, 265 gpm @ 25 psi
    "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 10 HP/1 PH, 1.3 Max SG, 340 Max gpm, 265 gpm @ 25 psi
    Centrifugal Pump, 3IN X 3IN Self Priming, Close-Coupled to 10HP, 1PH, TEFC Motor, Cast Iron, Double Viton Seal
    SKU: BUSP3340E10TB-1
    $3,770.00 / EA
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    Picture of "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 15 HP/3 PH, 1.5 Max SG, 400 Max gpm, 365 gpm @ 25 psi
    "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 15 HP/3 PH, 1.5 Max SG, 400 Max gpm, 365 gpm @ 25 psi
    Centrifugal Pump, 3IN X 3IN Self Priming, Close-Coupled 15 HP, 3 Phase TEFC Motor, Cast Iron, Double Seal
    SKU: BUSP3350E15TB
    $3,239.00 / EA
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    Picture of "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 10 HP/3 PH, 1.3 Max SG, 340 Max gpm, 265 gpm @ 25 psi
    "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 10 HP/3 PH, 1.3 Max SG, 340 Max gpm, 265 gpm @ 25 psi
    Centrifugal Pump, 3IN X 3IN Self Priming, Close-Coupled to 10HP, 3PH, TEFC Motor, Cast Iron, Double Viton Seal
    SKU: BUSP3340E10TB
    $2,711.00 / EA
    i h
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    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

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    Picture of "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 2", 5 HP/1 PH, 1.5 Max SG, 200 Max gpm, 112 gpm @ 25 psi
    "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 2", 5 HP/1 PH, 1.5 Max SG, 200 Max gpm, 112 gpm @ 25 psi
    Centrifugal Pump, 2IN X 2IN Self Priming, Close-Coupled to 5HP, 1PH, TEFC Motor, Cast Iron, Double Viton Seal
    SKU: BUSP3240E5T1B
    $2,525.00 / EA
    i h
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    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

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    Picture of "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 4" x 3", 20 HP/3 PH, 1.4 Max SG, 560 Max gpm, 470 gpm @ 25 psi
    "Vac-U-Double Seal" Self-Priming Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 4" x 3", 20 HP/3 PH, 1.4 Max SG, 560 Max gpm, 470 gpm @ 25 psi
    Centrifugal Pump, 4IN X 3IN Self Priming, Close-Coupled to 20 HP TEFC Motor, Cast Iron, Double Seal
    SKU: BUSP3450E20TB
    $3,892.00 / EA
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    Picture of "Vac-U-Double Seal" Straight Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 15 HP/3PH, 1.5 Max SG, 365 Max gpm, 310 gpm @ 25 psi
    "Vac-U-Double Seal" Straight Close Coupled Centrifugal Pump / Motor Unit, Cast Iron, 3", 15 HP/3PH, 1.5 Max SG, 365 Max gpm, 310 gpm @ 25 psi
    Centrifugal Pump, 3IN Self Prime, Cast Iron, 15 Hp, 3 Phase, Double Seal
    SKU: BUS3320E15T
    $2,840.00 / EA
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    DELAY MY SHIPMENT until all in-stock items AND backordered items are available in one warehouse before shipping. (You will receive only one freight bill if you choose this option).

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    Ship my in-stock items now, ship my backordered items when they become available. (You will be billed for each shipment).

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    Additional Information

    3" Next Generation Pumps feature 2-in-1 Inlet Design (patent pending). Select from (2) Inlet Locations on (1) 3" Self Priming Pump!