Taco 113-C4 Cast Iron Pump 1/8 HP 1 PH

Closed-loop hydronic systems use Taco 113-C4 for residential and light-commercial heating with a 1/8 HP direct-drive circulator. Its 115 V single-phase motor runs at 3250 RPM, delivers up to 33 GPM and 22 feet of head, and uses a 2-bolt universal flange with compatible flange kits. Fill the loop, purge air, and verify automatic overload protection before startup.

The Taco Series 110 113-C4 uses an ASTM A48 Class 30 cast iron casing, non-ferrous polymer impeller, hardened alloy steel shaft, and carbon-ceramic seal. Its 6-3/8-inch flange-to-flange length and 11.4-pound dry weight help installers plan replacement layouts, while the 125 PSI pressure rating and 40°F to 240°F fluid range define operating limits. The pump uses resilient direct drive, sleeve bearings, UL listing, and CSA approval.

Key Features of Taco 113-C4

- 1/8 HP motor supports residential and light-commercial closed-loop hydronic heating.
- 115 V single-phase power simplifies connection to compatible heating circuits.
- 3250 RPM operation supports the specified direct-drive circulator configuration.
- 33 GPM maximum flow handles compatible residential and light-commercial hydronic systems.
- 22-foot maximum head supports small heating zones and distribution circuits.
- 2-bolt universal flange accepts compatible 3/4-inch through 1-1/2-inch flange kits.
- Automatic-reset overload protection helps guard the motor against excessive heat.
- Cast iron casing, polymer impeller, alloy steel shaft, and carbon-ceramic seal support hydronic service.
- 6-3/8-inch length and 11.4-pound dry weight support replacement planning.

Why Choose Taco 113-C4

This Taco cast iron circulator combines direct-drive operation, universal flange compatibility, and defined hydraulic performance for hydronic heating.

- Build: Cast iron, alloy steel, polymer, and carbon-ceramic components support compatible closed-loop heating systems.
- Value: Universal flange kits and compact replacement dimensions can reduce piping changes and installation labor.
- Audience: Residential HVAC contractors, boiler technicians, hydronic installers, property maintenance teams, and light-commercial heating professionals can specify this model.

Applications & Use Cases

Install the Taco 113-C4 in closed-loop hydronic heating, radiant systems, residential boilers, and light-commercial zone circuits. Its 6-3/8-inch flange-to-flange length, 11.4-pound dry weight, and universal flange options help plan pipe spacing, valve access, motor clearance, and service replacement work.

Warranty & Support

- Warranty: A model-specific factory warranty term for the Taco Series 110 113-C4 was not verified and requires confirmation through Taco or the authorized seller.
- Confirm 115 V wiring, purge trapped air, inspect the carbon-ceramic seal, verify overload protection, and check flow direction during commissioning.

Clean the system strainer, monitor the cast iron casing for leakage, and inspect sleeve-bearing operation during scheduled maintenance. Purchase the Taco 113-C4 cast iron hydronic circulator pump from Mulmotor.com for authentic equipment, applicable factory warranty protection, and pump support.