This base-mounted end suction pump comprises a class 30 cast iron casing with integrally cast mounting feet and a centerline discharge for positive air venting. The unit incorporates a bronze impeller dynamically balanced to ANSI Grade G6.3, fitted to the shaft with a key. This assembly utilizes a dry shaft design that prevents circulating fluid from contacting the stainless steel shaft, which is protected by a replaceable bronze shaft sleeve. A mechanical seal with ceramic seat and EPT rubber components provides fluid containment, rated for 125 PSI operation. The pump bearing housing contains heavy-duty permanently lubricated sealed-for-life ball bearings and includes a foot support at the driver end.
The pump utilizes a 20 HP premium efficiency ODP motor operating at 1750 RPM with Aegis grounding and a 380-460V/3PH power supply, resulting in a DOE PEI rating of 0.46. 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 1 / IP 21 rating. The drive ships unmounted for customer wall installation without a bracket, harness, or vibration mounts.