This base-mounted end suction pump utilizes a cast iron casing with integrally cast mounting feet and a bronze impeller to facilitate fluid transfer. The assembly incorporates a dry shaft design that prevents circulating fluid from contacting the stainless steel shaft, which is shielded by a replaceable bronze shaft sleeve. A mechanical seal consisting of ceramic and EPT components provides pressure containment up to 125 PSI when configured without a wear ring. This unit includes pressure tappings on both the suction and discharge connections for monitoring and employs a center-line discharge configuration to facilitate positive air venting.
The 25 HP premium efficiency TEFC motor operates at 1750 RPM, incorporates Aegis grounding, and accepts a 380-460V / 3PH power supply, 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 manages parallel pumping and multi-pump control functions, is configured with a fused disconnect without bypass and holds an enclosure NEMA 12 / IP 55 rating. The drive ships unmounted for customer wall installation without a bracket, harness, or vibration mounts.