Taco 131 Series 100 Cast Iron Three-Piece Circulating Pump 1/3HP

Taco 131 Cast Iron Three Piece 1/3 HP

The Taco 131 is a heavy-duty three-piece circulator engineered for medium-head hydronic heating and cooling applications. The mechanical architecture features a rugged cast iron volute and a high-velocity impeller designed to maintain a stable laminar flow path at 1750 RPM. Its modular construction allows for the independent replacement of the motor or bearing assembly, ensuring the pump remains a serviceable asset for decades. This model is ideal for large residential or commercial closed-loop systems where a robust, rebuildable pump is required to overcome significant piping resistance.

Driven by a 1/3 HP motor, the Taco 131 provides high starting torque to ensure reliable fluid movement after long periods of seasonal inactivity. The motor is coupled to the bearing frame via a flexible spring coupling, which dampens electrical harmonics and prevents motor vibration from being transmitted into the system piping. This stable electrical interface protects the mechanical seal and the precision-ground shaft, contributing to a higher MTBF in demanding, constant-duty environments.

Key Features of Taco 131

• Powerful 1/3 HP motor for 1750 RPM service
• Cast iron construction optimized for closed-loop hydronics
• Modular three-piece design for simplified maintenance
• Quiet, oil-lubricated sleeve bearing technology
• Flexible spring coupling isolates vibration
• Max working pressure: 125 PSI
• Maximum fluid temperature: 240°F