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Cast iron circulator pump with 3 inch flange connections, 17 1/2 inch length, 7 9/16 inch width

BELL AND GOSSETT

BELL AND GOSSETT HD3 1/3 hp 115/230V 3 in Flange Circulator Pump

SKU CH-XZ33-KTRT5 MPN HD3

A 1/3 hp cast-iron hydronic circulator with 3 in flanges delivers up to 112 gpm at 4 ft head for closed-loop heating systems

  • TypeDrain Components
  • 1/3 hp motor powers hydronic circulation
  • Dual 115/230V voltage suits varied installations
  • 3 in flange connection fits standard piping
  • Cast iron housing resists corrosion in closed loops
  • 112 gpm at 4 ft head delivers strong flow

Hydronic circulating pump for closed-loop systems

The Bell & Gossett HD3 is a 1/3 hp hydronic circulating pump built for closed-loop hot-water systems. It operates on 115/230V single-phase power and uses a direct-drive motor with a cast-iron housing. The unit is rated for a maximum flow of 112 gpm at 4 ft of head and a best-efficiency point of 70 gpm at 12 ft of head.

Flanged 3-inch connections

The pump features 3-inch flanged inlet and outlet connections with a 10-inch face-to-face dimension, simplifying replacement in existing hydronic piping. Flanges are included with the unit. Overall dimensions are 17 1/2 inches in length and 7 9/16 inches in width. The cast-iron construction provides durability for continuous circulation duty.

Replaces legacy circulators in hydronic heating

This model suits installers upgrading older circulators in closed-loop hydronic heating applications where the 1/3 hp rating matches the system curve. It is not suited for open-loop or potable-water systems, nor for installations requiring higher shut-off head than the 18 ft rating provides. Builders needing a different flow range or connection size should verify specifications against the existing piping.

Highlights

  • 1/3 hp motor powers hydronic circulation
  • Dual 115/230V voltage suits varied installations
  • 3 in flange connection fits standard piping
  • Cast iron housing resists corrosion in closed loops
  • 112 gpm at 4 ft head delivers strong flow

Specifications

TypeDrain Components
BrandBell & Gossett
ModelHD3

Questions about this item

What does the 115/230V dual-voltage rating mean for wiring the HD3?

The motor can be wired for either 115V or 230V single-phase supply; select the correct voltage tap during installation.

What are the flange dimensions and face-to-face length for the 3-inch connections?

The pump uses 3-inch flanges with a 10-inch face-to-face dimension and an overall length of 17 1/2 inches.

How is the HD3 installed in a closed hydronic loop and what step is often missed?

Mount the pump with the motor horizontal, ensure the arrow matches flow direction, and wire the motor for the correct supply voltage.

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