Taco 0018E-SF4 - ECM High-Efficiency Circulator - Stainless Steel, 16 GPM, Universal Flanged

The Taco 0018E-SF4 is a high-efficiency, variable-speed wet rotor circulator pump from the Viridian series, featuring a stainless steel casing and an ECM permanent magnet motor. Designed for closed-loop domestic hot water recirculation systems, it offers multiple operating modes, energy savings, and reliable performance. With its easy-to-use dial and built-in diagnostics, the 0018E-SF4 provides straightforward setup and dependable operation for a range of hydronic applications.

Specifications

Flow rate: up to 16 gallons per minute (GPM)
Maximum head: 18 feet
Maximum operating pressure: 125 psi
Voltage: 120V, 60 Hz, single phase
Operating power: 4–44W
Amperage: up to 0.54A
Motor speed: variable, 1590–4830 RPM
Fluid temperature range: 36°F to 230°F (2°C to 110°C)
Application: indoor use with water or up to 50% water/glycol
Restrictions: not suitable for open-loop potable water or chilled water systems
Casing: stainless steel
Flange connection: 4-bolt flange
Motor type: ECM permanent magnet
Display: 5-color LED shows mode and diagnostics
Insulation: double insulated, no ground wire required

Features

Operating modes: infinitely variable fixed speed, constant pressure, and proportional pressure for system flexibility
High-efficiency ECM motor: reduces energy consumption by up to 85%
SureStart®: automatically purges air and unblocks the pump to avoid callbacks
BIO Barrier®: protects pump from contaminants inside the system
Integral Flow Check (IFC®): built-in check valve eliminates need for an external valve
Compatibility: works with Taco ZVC zone valve controls and SR switching relays for ON/OFF operation
Quiet operation: engineered for low noise and vibration

Applications

Closed-loop domestic hot water recirculation
Hydronic heating systems with zoning by valves or circulators
Systems with panel radiators and thermostatic radiator valves (TRVs)
Residential and light commercial energy-efficient system upgrades

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0018E-SF4 - ECM High-Efficiency Circulator - Stainless Steel, 16 GPM, Universal Flanged