This base-mounted end suction pump comprises a class 30 cast iron casing with integrally cast mounting feet and a bronze impeller. The assembly utilizes a dry shaft design that prevents circulating fluid contact with the stainless steel shaft, which remains protected by a replaceable bronze shaft sleeve. Mechanical sealing consists of a ceramic seat with EPT rubber elements, rated for 125 PSI operation. Hydraulically balanced to ANSI Grade G6.3 standards, the unit incorporates suction and discharge gauge ports to facilitate system monitoring.
The 25 HP premium efficiency ODP motor operates at 1750 RPM and integrates Aegis grounding for protection against electrical interference while drawing 380-460V / 3PH power, resulting in a DOE PEI rating of 0.48. The "S" in the SFI series denotes Taco's advanced Self-Sensing technology, which eliminates remote sensors and field wiring by using internal mathematical algorithms to calculate system resistance and automate variable flow. The included VFD is configured with a fused disconnect without bypass and holds an enclosure NEMA Type 1 / IP 21 rating. The drive ships unmounted for customer wall installation without a bracket, harness, or vibration mounts.