Performance & Sizes
- Sizes 1½ to 8 inches.
- 20–4,800 GPM, 5–380 ft head, ½–200 HP and 1,160–3,500 RPM, depending on model.
- ANSI Class 125 flanges; optional Class 250.
Frame-Mounted End Suction Pump
Taco FI / SFI Frame-Mounted End Suction Pumps
FI / SFI Series — 20–4,800 GPM, 5–380 ft head, ½–200 HP, 1½" to 8"
Taco FI / SFI Frame-Mounted End Suction Pumps from Taco Comfort Solutions are single-stage centrifugal pumps on a rigid steel base for heating, cooling, pressure boosting and water supply, up to 4,800 GPM.
Manufactured by
Taco Comfort Solutions
Taco FI / SFI Frame-Mounted End Suction Pumps
Review the confirmed product information, including description, features, benefits, and applications.
Taco FI and SFI pumps are single-stage centrifugal pumps for quiet water circulation in heating, cooling, pressure boosting and water supply systems. They feature a rigid steel base, flexible coupling and sealed-for-life bearings for stable operation and simplified maintenance.
The top centerline discharge provides self-venting, while rear pullout construction allows servicing without disturbing system piping. A dry shaft design and replaceable shaft sleeve protect components and simplify seal replacement.
SFI SelfSensing versions provide integrated variable-speed control and ProBalance® balancing; optional ECM packages improve energy efficiency.
Pressure & Temperature
- Working pressure: 175 PSIG (1,210 kPa) standard; optional 300 PSIG (2,070 kPa), subject to pressure–temperature limits.
- Fluid temperature: 250°F (120°C); cooled seal flushing recommended above 225°F and required above 250°F.
Construction & Materials
- Cast iron casing and cover; ductile iron casing for Class 250.
- Bronze or stainless steel impeller; Type 416 stainless steel shaft.
- Seal: ceramic/EPT standard; optional tungsten carbide or silicon carbide.
- Sealed-for-life bearings with a minimum L10 design life of 60,000 hours.
- Welded structural steel base with grouting access and integral drain pan with ¾-inch drain connection.
- Rear pullout construction, replaceable shaft sleeve, ¼-inch NPT pressure taps and casing drain.
Controls & Options
- SFI controls: constant flow, constant pressure, flow compensation and duplex alternation.
- SFI no-flow and dry-run alerts with optional shutdown.
- ECM package: 3–10 HP, 1,750 RPM, 230/460 V, three-phase, 60 Hz; TEFC motor with required variable-frequency drive.
- Options: bronze wear ring, seal flush line, 5-micron filter, cyclone separator and alternative coupling guard.
- eLink™ NFC access to equipment documentation and support.
Reduced Vibration
The rigid base reduces vibration and improves alignment.
Simpler Piping
Self-venting discharge simplifies piping and reduces piping strain.
Easier Maintenance
Rear pullout design, dry shaft and replaceable sleeve reduce component wear and servicing costs.
Less Lubrication
Sealed bearings reduce routine lubrication requirements.
Taco FI / SFI pumps circulate water in building heating, cooling and water supply systems.
Heating Systems
Hot water circulation in heating systems.
Air Conditioning & Chillers
Air conditioning, constant-flow chiller/boiler and secondary variable-flow systems.
Pressure Boosting
Pressure boosting duties in building water systems.
Water Supply & Transfer
Water supply and cooling water transfer.
NSF 61
NSF 61 construction is available.
ANSI B16.1
Flange pressure–temperature ratings to ANSI B16.1.
ANSI Grade G6.3
Impellers are balanced to ANSI Grade G6.3.
ANSI / OSHA Coupling Guard
Optional coupling guard conforming to ANSI 315.1 Section 8 and OSHA 1910.219.
UL 778 / CSA C22.2 No. 108
SFI electronic motor protection per UL 778 and CSA C22.2 No. 108.
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