Our Technology
At the heart of each of our valves is a paraffin wax actuator, an “engine” that phase changes from solid to liquid, liquid to solid, in response to temperature variations. This produces a defined and repeatable valve modulation, allowing for precise thermal control based solely on temperature.
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For Industrial

Our thermostatic temperature control valves are used in many industries to keep processes and facilities operating at peak performance.
Popular applications include freeze and scald protection, tepid water, washdown, steam tracing control, mixing, diverting, and more.
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The Guru®, our flagship line of railroad freeze protection valves, protects locomotives and passenger car trains from freeze damage each winter.
The Guru® is trusted by all Class 1s and major North American railroad operators to protect their equipment.
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Our plumbing products include CircuitSolver®, the world’s first thermostatic DHWS balancing valve, drain tempering valves, tepid water, and more.
Click below to visit our website dedicated to commercial plumbing products:
Learn MoreFor Aerospace & Defense

From fighter jets and tanks to naval bases and FMTVs, our thermal actuator technology is used in a variety of applications where precise temperature control is critical to mission success.
Click below to visit our A&D dedicated website:
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Case Studies
Our valves are used in applications in railroad, plumbing, aerospace & defense, and industrial markets in thousands of projects and products each year – ranging from fighter jets to dishwashers and just about everything in between.
Read our case studies to see where our valves are, what they do, and what our customers say about us!
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