CircuitSolver (CS)

CircuitSolver - CSTraditional domestic hot water recirculation system balancing is time-intensive, laborious, and expensive.

For decades, balancing has been the combined effort of several contractors spending a lot of time manually balancing and rebalancing a Domestic Hot Water System (DHWS) to achieve the required flow needed to obtain the same temperature in each branch.

While manual balancing methods are good in theory, they flounder in practice resulting in hefty labor costs and frequent callbacks due to a manual balancing valve’s inability to react to dynamic changes in the system.

To conquer the challenges inherent to conventional manual balancing methods, ThermOmegaTech® invented the CircuitSolver®, the market’s first thermostatic balancing valve for domestic hot water recirculation systems.

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How It Works:

Installed at the end of each branch or riser before the return, CircuitSolver® uses our unique Thermoloid® wax thermal actuator to modulate the valve open and closed in response to temperature variations to maintain a specified temperature in each branch/riser.

During the initial start-up of a Domestic Hot Water System (DHWS), the valve is wide open and will begin to close once the system temperature requirements are met. Once the system is balanced, the valve will remain in its closed* position to keep hot water in the line and only modulate open to establish flow when the water temperature drops below the valve’s set-point. The CircuitSolver® will automatically modulate to its closed* position once the water temperature returns to the desired temperature.

This automatic response to temperature allows the balancing valve to adjust dynamically to the varied usage rates in a DHWS throughout the day. No manual balancing is required, simply install the valves and watch them work!

*Note: The valve will never fully close, allowing a small flow bypass 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® thermostatic balancing valve is comprised of 100% high-quality stainless steel components – a valve body, valve plug, spring, carrier, and thermal actuator.

Circuit solver Callouts 300x175 - CS
1 Valve Body 300 series stainless steel
2 Valve Plug 300 series stainless steel
3 Spring 300 series stainless steel
4 Carrier 300 series stainless steel
5 Thermal Actuator 300 series stainless steel

Typical Applications:

CircuitSolver® can be used in any building with a domestic hot water recirculation system to maintain a thermally balanced approach and have hot water readily available at each fixture. Used in commercial buildings of all sizes and Domestic Hot Water Systems (DHWS) with varying complexity, CircuitSolver® installations often include hotels, hospitals, universities, high-rise, and multi-family apartment buildings.

To see CircuitSolver® installations in your area, visit our installations page.

CircuitSolver® thermostatic balancing valves can also balance the return flow between the master mixing valve and the water heater. To learn more about this application, go to the Balancing a DHWS Return with CircuitSolver page.



  • All Stainless Steel – Corrosion Resistant Construction
  • High thrust actuator keeps orifice free of debris
  • Never fully closes, some water always passing through
  • Long service life and 3-year warranty
  • Reduces installation and maintenance costs
  • Promotes effective water conservation


  • NSF/ANSI/CAN 61 & 372 Certified
  • Lead Free
  • Fully compliant with Section 1417(d) of SDWA, the Safe Drinking Water Act
  • Supports efforts toward LEED Certification
  • Complies with the Buy American Act



  • Sizes: 1/2”, 3/4″, 1”, 1 ¼”, 1 ½”, & 2”
  • Fixed Temperatures:
    • 100°F (37.7°C)
    • 105°F (40.5°C)
    • 110°F (43.3°C)
    • 115°F (46.1°C)
    • 120°F (48.8°C)
    • 125°F (51.6°C)
    • 130°F (54.4°C)
    • 135°F (57.2°C)
    • 140°F (60.0°C)
  • Max Working Pressure: 200 PSIG/14 BAR
  • Max Working Temperature: 250°F/121°C
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