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Cast iron cartridge circulator pump with flange connections

Taco Inc

Taco Inc 007 Cast Iron Cartridge Circulator Pump 1/25 HP 125 PSI

SKU CH-HA4G-97M8Q MPN 007

Cast-iron cartridge circulator rated 1/25 HP, 125 PSI, 115 V, delivering up to 22 gpm at 1 ft head

  • Reliable hydronic circulation with 1/25 HP motor
  • Single-speed 115V AC operation for simple installation
  • Cast iron construction rated to 125 PSI maximum pressure
  • Delivers 22 gpm at 1 ft head for strong flow
  • Handles 15 gpm at 5 ft head for typical system demand

Cast Iron Circulator Pump 1/25 HP

The Taco 007 is a cast iron cartridge circulator pump rated at 1/25 horsepower for hydronic heating systems. It operates on 115V AC single-phase power and fits standard flange connections with a 6 3/8 inch face-to-face dimension. The pump is approved for potable water systems and handles a maximum pressure of 125 PSI.

Thermals Noise and Power Draw

The single-speed motor runs continuously at nameplate voltage without variable-speed control. Flow performance reaches 22 gpm at 1 foot of head, 15 gpm at 5 feet, and drops to 0 gpm at the maximum 10 feet of head. The cartridge design allows the motor assembly to be removed for service without breaking pipe connections.

Upgrade From Older Circulators

This model replaces worn cartridge circulators in residential hydronic loops where a fixed-speed pump matches the original design. The jump is worth it when the existing pump has failed or when a direct OEM replacement maintains system balance without re-piping. It is not for installations requiring variable-speed operation, higher head pressure, or multiple speed settings.

Highlights

  • Reliable hydronic circulation with 1/25 HP motor
  • Single-speed 115V AC operation for simple installation
  • Cast iron construction rated to 125 PSI maximum pressure
  • Delivers 22 gpm at 1 ft head for strong flow
  • Handles 15 gpm at 5 ft head for typical system demand

Specifications

BrandTaco

Questions about this item

How do I install the Taco 007 circulator pump and which step is most often missed?

Bolt the pump between flanges with the 6 3/8 in face-to-face spacing, orient the arrow toward flow direction, and wire the 115V single-phase motor; the step most often missed is verifying the arrow matches the system flow before tightening the bolts.

What maintenance or replacement will the cartridge circulator need later?

The wet-rotor cartridge is the only wear item; when flow drops below the 22 gpm at 1 ft head or 15 gpm at 5 ft head ratings, remove the four cartridge bolts, swap the cartridge, and reinstall without breaking pipe connections.

What limit appears first during continuous operation of the 1/25 HP pump?

The 10 ft maximum head is the first limit; if system resistance exceeds 10 ft the 1/25 HP motor cannot overcome it and flow falls to 0 gpm, so size the piping and valves to stay under that head.

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