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To balance a cold water recirculation system, a CircuitSolver® Union Cold Water thermostatic valve is installed at the end of each branch or riser. The valve automatically monitors and modulates flow based on current water temperatures to maintain a set temperature in the system to mitigate Legionella growth.

The CircuitSolver® Union Cold Water balancing valve uses the same reliable and precise thermal actuator technology as the traditional CircuitSolver® for hot water balancing. Designed withmore
Unit of Measure

Applications

 Cold Water Recirculation Systems

Benefits
  • Automatically and continuously adjusts to balance cold water recirculation systems
  • Reliable, long lasting thermal actuator
  • Long service life and 3 year warranty

Brands

 ThermOmegaTech®

Certifications

 American National Standards Institute (ANSI 61) National Sanitation Foundation (NSF 61)

Close Flow Coefficient (Cv)

 0.3

Design Features
  • Never fully closes, small bypass of flow
  • Lead free for use in potable water systems
  • Stainless steel, corrosion-resistant construction

Design Flow Coefficient (Cv)

 1.50

Diameter (D)

2.5 in64 mm

Length (L)

4.7 in120 mm

Maximum Pressure

 200 psig14 bar

Maximum Temperature

 250 ºF121 ºC

Model

 CircuitSolver®

Need for Dynamic Balancg

 To discourage Legionella bacteria growth, cold water systems need to be recirculated and must be properly balanced to both establish continuous flow and keep line temperatures below 67ºF - the point at which Legionella begins to colonize.

Many vari

Open Flow Coefficient (Cv)

 2.7

Openg Temperature

 XXX refers to the desired opening temperature. When the water temperature rises above this point the CircuitSolver® will begin to open, allowing water to easily enter the return line. For example, if you want 65ºF desired return temperature and the CSU-CW

Options

 Check Valve Insert

Thread Size

1 in

Thread Type

 National Pipe Thread (NPT)

Warranty

 3 years

Weight

 3.1 lb1.4 kg

Why Cold Water Recirculation?
  • Keeps cold water moving and maintains water quality to reduce the impact of stagnation
  • Ensures "residual chlorine" is distributed throughout the cold water system
  • Keeps water temperature in branches and risers below 68ºF
  • VH

Additional formation

 Dynamically & automatically balance cold water recirculation systems using the CircuitSolver® Union Cold Water (CSU-CW) thermostatic balancing valve.

Legionella in Non-Recirculated Cold Water Systems

Stagnant, warm water in a plumbing system