CircuitSolver Union Cold Water (CSU-CW)

csu cw product page image - CircuitSolver Union Cold WaterThe CircuitSolver® Union Cold Water thermostatic balancing valve automatically and continuously balances a cold water recirculation system to discourage Legionella bacteria colonization, reduce stagnation, and ensure “residual chlorine” is distributed throughout the system.

The CSU-CW valve features a union with an optional check valve built into the body of the CircuitSolver® to reduce the number of system components to be installed and minimize potential leak points.

The valve features an integrated O-ring and is factory assembled for a leak-free seal.

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How It Works:

The CircuitSolver® Union Cold Water valve is installed at the end of each branch or riser in a domestic cold water system (DCWS) to automatically and continuously monitor the water temperature. Utilizing our proprietary thermal actuator as the controlling element, the valve will modulate open or close in response to changing temperatures to maintain a specified temperature in the line.

The valve will be in its closed* position when the water temperature in the supply branch is under the valve’s set-point and only opens to establish flow when it rises above the set-point. This automatic response to temperature allows the balancing valve to dynamically adjust to the varied usage rates in a DCWS throughout the day.

*Note: The valve will never fully close, always allowing a small bypass of flow to the return to avoid dead-heading the recirculation pump. The limited flow to your return line will reduce system wear, electricity, and water usage and improve overall system operation.

Valve Components:

The CircuitSolver Union Cold Water valve comprises 100% stainless-steel components, a high-quality O-ring, and an optional check valve.

CSU LineDrawing callouts 1024x596 - CircuitSolver Union Cold Water
ITEM DESCRIPTION MATERIAL
1 Valve Body w/ Union Threads 303 stainless steel
2 Union Nut 303 stainless steel
3 Female Threaded Inset 303 stainless steel
4 Plug 303 stainless steel
5 Operating Spring 302 stainless steel
6 Thermal Actuator 303 stainless steel
7 O-Ring Buna-N
8 Check Valve (Optional) Glass Filled Noryl

Typical Applications:

The CircuitSolver® Union Cold Water thermostatic balancing valve can be used in any building with a domestic cold water recirculation system to keep the water below 68°F. This mitigates the risk of Legionella and other bacterial growth.

These systems have become more prominent in VA hospitals because of the VHA 1061 directive; however, any commercial building such as schools, hotels, high-rise, and multi-family apartment buildings can benefit from implementing a cold water recirculation system to protect the water lines from the risk of bacteria colonization during periods of low flow or non-use.

 

Benefits:

  • All Stainless Steel – Corrosion Resistant Construction
  • High thrust actuator keeps orifice free of debris
  • Union with integrated O-ring for a leak-free seal
  • Optional check valve built into the body
  • Never fully closes, some water always passing through
  • Long service life and 3-year warranty

Certifications:

Specifications:

  • Sizes: 1/2”, 3/4″ & 1”
  • Max working Pressure: 200 PSIG/14 BAR

Matt Trevino– DBR Engineering - CircuitSolver Union Cold Water \"CircuitSolver® is a game changer in balancing DHWS and I would definitely use it as a standard in future projects.\"

— Matt Trevino – DBR Engineering
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