CircuitSolver Union Assembly (CSUA)

CSUA Banner - CSUAThe CircuitSolver® DHWS thermostatic balancing valve automatically and continuously balances a recirculation system in a fraction of the time required by traditional manual balancing methods.

The CircuitSolver® Union Assembly features a union with optional check valve built into the body of the CircuitSolver® and isolation ball valves on either side 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.

How It Works:

Using our unique Thermoloid® blend paraffin wax actuator technology, the CircuitSolver® Union Assembly valve is installed at the end of each branch or riser to monitor the water temperature in the line and will automatically modulate open or close in response to changing temperatures to maintain a specified temperature.

The valve will be in its “closed” position when the water temperature in the supply branch is above the valve’s set-point and only open to establish flow when it drops below the set-point. This automatic response to temperature allows the balancing valve to dynamically adjust to the varied usage rates in a DHWS throughout the day.

The CSUA 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 Assembly valve is comprised of 100% stainless-steel components, a high-quality O-ring, two isolation ball valves, and an optional check valve.

CSUA callouts 1024x246 - CSUA
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
9 Ball Valve, ½” MxF

Typical Applications:

The CircuitSolver® Union Assembly can be used in any building with a domestic hot water recirculation system to ensure it’s thermally balanced and have hot water readily available at each fixture. Used in commercial buildings of all sizes and in DHWS’ with varying complexity, installations often include hospitals, schools, hotels, high-rises, and multi-family apartment buildings.

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

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

Benefits:

  • Automatically and continuously adjusts to balance domestic hot water systems
  • Eliminates balancing labor and callbacks
  • Direct replacement for manual balancing valves
  • Reliable, long lasting thermal actuators
  • Long service life and 3-year warranty

Certifications:

Specifications:

  • Sizes: 1/2”, 3/4″ & 1”
  • 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

With CircuitSolver®, we have started up systems in the afternoon to come in the next morning to find hot water perfectly balanced throughout all risers and zones. We make sure to get the check valves included, so there is never an issue with direction of flow. We are also getting the complete setups with isolation valves to take any extra steps of fabrication out of the picture.

— Christopher Meurer - J.C. Cannistraro, LLC