4600 Horizontal Split-Case Base-Mounted Pumps

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4600 Horizontal Split-Case Base-Mounted Pumps

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4600 horizontal split-case base-mounted pump
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4600 Horizontal Split Case (HSC) Pumps

  • Summary
  • Applications

    HVAC-system pumping; light industrial/ process pumping

  • Description

    The Armstrong 4600 horizontal split-case (HSC) double suction pumps are base mounted and engineered to substantially reduce cost over rival designs across installation, operation, and lifetime maintenance. High-efficiency NEMA-premium motors ensure low energy consumption and cost.

  • Materials
    • Cast iron, ductile iron, or bronze casing
    • Cast iron or bronze impeller
  • Configuration

    Inside single spring mechanical seal

  • Performance Range

    Up to 365 L/s (5,800 USgpm) flow; up to 200 m (650 ft) head

  • Temperature

    107°C (225°F)

  • Power

    (1.1 kW to 400 kW) 1.5 hp to 500 hp

  • Size

    100 mm to 250 mm (4" to 10")

Low installed cost

  •  ANSI/HI 1.3.5 rigid free-standing baseplate eliminates grouting
Design Envelope

Lowest installed cost. Lowest operating cost.


Low energy consumption

  • Armstrong 4600 pumps are equipped with high-efficiency NEMA-premium motors for significant reduction in energy consumption and cost 
  •  Tilted-parting concept to maximize efficiency and reduce inlet turbulence 
  •  All motors are suitable for inverter-fed service

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Low maintenance cost

  •  Leaking seals or noisy bearings can be serviced in minutes without disturbing other components
  • No lubrication or seal adjustments required 
  •  Integral bearing nut for easy bearing removal and re-use 
  •  Mechanical seals and bearings can be replaced easily without opening the pump casing 
  •  Unique cartridge design mechanical seal that uses a standard replacement seal 
  •  Universal replacement seals, bearings, and motors available locally world-wide




Learn More


4600 & 4610 HSC pumps - brochure

Replacement Parts