How to tell the difference between Taco circulator pumps.
Taco circulator pumps are available in a wide range of models, with different materials of construction and connections types/sizes:
To determine the type of pump you have, refer to the manufacturer’s part #.
For example, a Taco 007-F5 circulator is a 007 model, Cast Iron, with Flanged Connections, where 007 is the circulator series, F stands for “Flanged” and indicates the Cast Iron body, while 5 indicates the model.
Depending on the materials of construction, a Taco circulator can be:
F – Cast Iron, Flanged;
BF – Bronze, Flanged;
B – Bronze, ¾” Sweat Connection;
BC – Bronze, ½” Sweat Connection;
BT – Bronze, ¾” Threaded Connection;
SF – Stainless Steel, Flanged;
ST – Stainless Steel, ¾” Threaded Connection;
The color of the circulator is also an indicator of the pump body material.
All Cast Iron Taco models come in signature green color, with exception of the circulators supplied with a boiler by the boiler manufacturer. Such circulators are in black color.
All bronze Taco circulators come in brown color and all the stainless steel models are usualy silver with motor part painted green.
Cast iron models are common for closed loop hydronic and radiant heating applications, whereas stainless steel and bronze models are typical for open loop heating systems and domestic hot water recirculation systems.
Most of the Taco circulator models are compatible with flange sizes up to 1-1/4”, allowing them to be easily integrated into virtually any heating system.
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