Alpha 3/50 hp 21.5 gpm 115V Cast Iron Circulator Pump with Terminal Box

Part #G99163903  |  Item #7286082  |  Manufacturer Part #99163903

$238.18 EACH

Flow Rate:

10.8 gpm

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Product Details

  • Energy efficient permanent magnet motor
  • AUTOAdapt control mode automatically adjusts the performance
  • Three constant speed settings and three constant pressure settings
  • Available with either cast iron or stainless steel pump housing
  • LED display shows current energy consumption and estimated flow
  • Integrated check valve
  • Available with either Line cord or terminal box connection
  • Flanged connection with nut capture feature for quick installation
  • Magnetite-resistant design helps prevent deposits and blockages with robust ceramic shaft, ceramic bearing rings, and stainless steel bearing plate
  • Robust startup feature enables the pump to continuously attempt to restart in blocked rotor conditions


AMP: 0.65

ANSI Specifications: [ANSI 372, ANSI 61]

Blower Type: Variable Speed

Collection: Alpha

Depth: 6-19/50 in

Discharge: 1-1/2 in

End Connection 1: Flanged

End Connection 2: Flanged

End Connections: Flanged

Energy Star Compliant: No

FM Approved: No

Fitting Size 1: 1/2 in

Fitting Size 2: 3/4 in

Fitting Sizes: 1/2 in x 3/4 in

Flow Rate: 10.8 gpm

Height: 6-1/2 in

Horsepower: 3/50 hp

IAPMO Listed: No

Impeller: Composite

Installation Type: In-line

Material: Cast Iron

Maximum Feet of Head: 18

Maximum Pressure: 150 psi

Maximum Temperature: 230

Minimum Temperature: 36

NSF Certified: Yes

NSF Specifications: [NSF 372, NSF 61]

Phase: Single Phase

Power Source: Hardwired

Product Type: [Circulator Pump, Box]

Pump Application: Heating

Pump Body Material: Cast Iron

Pump Motor Type: ECM

Pump Mounting: In-Line

Pump Phase: 1

Pump Stage: 1

UL Listed: No

Volts: 115V

Watts: 45000

Weight: 6.746

Width: 3-14/25 in