This end suction pump is constructed with a class 30 cast iron casing featuring center-line discharge and integrally cast mounting feet. The assembly incorporates a bronze impeller dynamically balanced to ANSI Grade G6.3 and a stainless steel shaft shielded by a replaceable bronze shaft sleeve. This dry shaft design prevents circulating fluid from contacting the shaft. The unit utilizes a mechanical seal featuring ceramic seat construction and EPT rubber, rated for operation at temperatures up to 250°F.
The 20 HP premium efficiency TEFC motor operates at 1750 RPM and integrates Aegis grounding on a 208V 3PH power supply with 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 an electro-mechanical bypass, a main fused disconnect with 100kA SCCR, and holds a NEMA 1 / IP 21 enclosure rating. The drive ships unmounted for customer wall installation without a bracket, harness, or vibration mounts.