Circulators Home /Products/Hydronics/Circulators IN-LINE CLOSE COUPLED TACO 100 SERIES TACO 110-120 SERIES TACO 121-138 SERIES ECM HIGH-EFFICIENCY TACO 1915e™ WET ROTOR SINGLE SPEED TACO 00® SERIES THREE SPEED TACO 00® SERIES VARIABLE SPEED – SETPOINT TACO 00® SERIES VARIABLE SPEED – OUTDOOR RESET TACO 00® SERIES VARIABLE SPEED – VARIABLE VOLTAGE TACO 00® SERIES VARIABLE SPEED – SOLAR CONTROL TACO 00® SERIES ECM HIGH-EFFICIENCY TACO 00e SERIES