Automatic Cold Water Recirculation Balancing
Unlike a manual balancing valve that maintains a fixed flow setting, the CircuitSolver® Cold Water Balancing Valve uses thermostatic control. As water temperature changes, the valve automatically adjusts recirculation flow to maintain the specified return temperature.
Learn more about Cold Water BalancingCircuitSolver® Cold Water Advantages
- Self-Actuating Operation – Requires no external power, sensors, or electronic controls.
- Reduced Startup Labor & Callbacks – Eliminates manual balancing and reduces callbacks for rebalancing as system conditions change.
- Corrosion-Resistant Construction – Stainless-steel construction supports long service life in potable water systems.
- High-Thrust Actuator – Helps keep the valve orifice free of debris for consistent operation.
- Installation Flexibility – Union, assembly, connection, and monitoring options support different piping and installation requirements.
- 10 Year Warranty – Provides 10 years of product coverage.
Typical Applications
CircuitSolver® thermostatic cold water balancing valves are used in new and retrofit domestic cold water recirculation systems in hospitals and healthcare facilities, hotels, schools and universities, multifamily and high-rise buildings, and other commercial facilities implementing building water management strategies.
Thermostatic balancing is also recognized in VA plumbing guidance for both hot and cold water recirculation systems.
CircuitSolver® Cold Water Resources
Product Literature
Specification & Installation
Design Files
Technical Specifications
| Description | Specification* |
|---|---|
| Valve Sizes | ½” , ¾”, & 1” NPT |
| Fixed Set Points | 60°F, 65°F, and 70°F (15.6°C, 18.3°C, and 21.1°C) |
| Maximum Working Pressure | 200 PSIG (14 bar) |
| Maximum Working Temperature | 250°F (121°C) |
| Valve Construction | 300-series stainless steel |
| Union Seal | Buna-N O-ring |
| Check Valve | Glass-Filled Noryl |
| Isolation Ball Valves | Lead-free brass |
| Connection Options | Viega® ProPress® and Uponor ProPEX® |
| Thermometer Range | 50°F to 300°F (10°C to 149°C) |
*Configuration and option availability varies by valve size and assembly.
Certifications & Compliance
- NSF/ANSI/CAN 61 and 372 Certified
- Buy America Act / BABAA compliance
- Compliant with Section 1417(d) of the Safe Drinking Water Act (SDWA)
- Supports efforts toward LEED Certification
How the CircuitSolver Cold Water Valve Operates
The CircuitSolver® 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. A Thermoloid® thermal actuator modulates the valve open or closed in response to changing water temperature to maintain the 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.
Because each CircuitSolver® responds independently to the water temperature in its branch or riser, recirculation flow automatically adjusts as conditions change to maintain more uniform cold water temperatures throughout the system.
*CircuitSolver® never fully closes. A small bypass flow is maintained to the return to prevent the recirculation pump from dead-heading.
CircuitSolver® Cold Water Valve Configurations
| Configuration | Includes | Installation Benefit |
|---|---|---|
| CircuitSolver® Union Cold Water (CSU-CW) | Integrated union with O-ring and optional check valve | Reduces field-installed components and potential leak points. |
| CircuitSolver® Union Assembly Cold Water (CSUA-CW) | Union with O-ring, optional check valve, and isolation ball valves | Factory-assembled package reduces field-installed components and labor. |
Connection & Monitoring Options
Viega® ProPress® Connections
Available on any CircuitSolver® Cold Water valve configuration for integration into ProPress piping systems. Viega® Smart Connect Technology helps identify unpressed connections, supporting faster installation and system startup.
Uponor ProPEX® Connections
Available on any CircuitSolver® Cold Water valve configuration for installations using ProPEX® expansion-type PEX piping. ProPEX connections reduce the number of piping connections and eliminate the need for torches, glues, gauges, solder, or calibration during installation.
Thermometer Assembly
Provides an easy-to-read dial for in-line temperature verification. The assembly can be integrated with any CircuitSolver® Cold Water valve configuration or purchased separately for new or existing installations. Measures water temperatures from 50°F to 300°F (10°C to 149°C).
Integrated connection and monitoring configurations are assembled and tested before shipment to reduce field assembly requirements.
Build Your CircuitSolver® Cold Water Model
Select the valve configuration, line size, temperature set point, and applicable connection or accessory options to build the model number.
