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Armstrong 116523-136A, Model H-68, Cast Iron In-Line Pump With 2

Armstrong 116523-136A, Model H-68, Cast Iron In-Line Pump With 2" NPT Flanges, Series H, 1-1/2 HP, 208-230/460 Volts, 3 Phase, 142 GPM Max, 46 ft Max Head, Sleeve Bearing Design

SKU #: 116523-136A
Brand: Armstrong

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Ship Weight (120.00 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.


  • Standard three-piece design with sleeve - oil lubricated bearing
  • 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. Number116523-136
Product TypeIn-line circulator
ApplicationHVAC / General purpose
Horsepower1-1/2 HP
Voltage208-230/460 Volts
Frequency60 Hz
Speed1800 RPM
Motor TypeODP
DesignThree piece
Flanges2" NPT
Maximum Flow142 GPM
Maximum Head46 ft
Impeller MaterialCast bronze
Pump BodyCast iron
Volute MaterialCast iron
Thermal Overload ProtectionNo
Maximum Fluid Temperature107°F
Maximum Operating Conditions175 psi at 225°F

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