Instructions / Assembly

©Taco Catalog #100-7.5 Effective Date: 05/1/00

Supersedes: 100-2 Dated: 3/15/92 Printed in USA

Taco Flo-Cheks have dependably stopped gravity circulation in forced hot water heating systems for over

40 years. Flo-Cheks open automatically when the circulator starts running. They feature a thumb screw

to manually open the valve, and are available in a cast iron universal body and a bronze sweat in-line

conﬁguration. A unique, re-designed weighted check on the 221 and 222 models features an enhanced

seating and quieter operation on high ﬂow systems.

Flo-Chek

HYDRONIC COMPONENTS & SYSTEMS

Flow Control

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Flow Control Flo-Chek Taco Flo-Cheks have dependably stopped gravity circulation in forced hot water heating systems for over 40 years. Flo-Cheks open automatically when the circulator starts running. They feature a thumb screw to manually open the valve, and are available in a cast iron universal body and a bronze sweat in-line conﬁguration. A unique, re-designed weighted check on the 221 and 222 models features an enhanced seating and quieter operation on high ﬂow systems.
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Submittal Data # 101-2.1 Supersedes: 100-2.1 Dated: 6/1/81 Submittal Data Information Flo-Chek Purpose Taco Flo-Cheks are used in a forced hot water heating system to prevent “gravity” circulation during periods when the boiler is hot but the space heating zone is not wanted. This makes it possible for the use of the heating boiler to maintain domestic hot water year round. In systems with multiple circulator zones, Flo-Cheks allow heat to ﬂow only into the zones that are calling for heat.