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Armstrong 116443MF-136A, Model H-53, Cast Iron In-Line Pump With 1-1/2

Armstrong 116443MF-136A, Model H-53, Cast Iron In-Line Pump With 1-1/2" NPT Flanges, Series H, 1/2 HP, 208-230/460 Volts, 3 Phase, 80 GPM Max, 28 ft Max Head, Maintenance Free Design

SKU #: 116443MF-136A
Brand: Armstrong

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Ship Weight (64.00 lbs)


Armstrong Series H Circulator Pump

This Armstrong In-Line circulator is suitable for hydronic heating and cooling, multi-stage zoning and general industrial service applications. It is built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, positive mechanical seal and modular construction. This circulator has been used by HVAC professionals for decades because it is cost-effective, durable and easy to maintain.


  • Maintenance free design which has permanently lubricated ball bearings and requires no maintenance at all
  • Radially-split body can be left in-line while servicing pump, eliminating disconnecting of pipes
  • Oversized shaft made from special alloy steel
  • Balanced centrifugal impeller ensures maximum water delivery in the HVAC system
  • Proven seal design made from strong and long-lasting materials for extended operating life
  • Three piece modular construction and back pull-out design for easy replacement of wear components

Mfg. Number116443-136
Product TypeIn-line circulator
ApplicationHVAC / General purpose
Horsepower1/2 HP
Voltage208-230/460 Volts
Frequency60 Hz
Speed1800 RPM
Motor TypeODP
DesignThree piece
Flanges1-1/2" NPT
Maximum Flow80 GPM
Maximum Head28 ft
Impeller MaterialNon-ferrous
Pump BodyCast iron
Volute MaterialCast iron
Thermal Overload ProtectionNo
Maximum Fluid Temperature107°F
Maximum Operating Conditions175 psi at 225°F

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