Hydronic heating system flow rates and pressure drops are related through a series of AFFINITY LAWS. Let’s examine the laws and how to use them …
Match the Steam Trap to the Control Valve Type (Part 2): Types of Traps
Which style of steam trap should I use when I have a modulating control valve? What happens if I “lift” out of a steam trap? …
Match the Steam Trap to the Control Valve Type (Part 1)
Steam heating systems are a dying breed in commercial and institutional heating systems. Engineers and contractors understand a great deal about hydronic heating systems. Sometimes, …
How to Limit the Speed of the Pump Using a Danfoss Variable Frequency Drive
In this Monday Morning Minute, we demonstrate how to limit the speed of the pump using the Danfoss Variable Frequency Drive (VFD).
Adjusting a Variable Frequency Drive (VFD) to Over Speed a HVAC Centrifugal Pump
In past R. L. Deppmann Monday Morning Minutes, we discussed the option of a small amount of over speeding on B&G pumps in HVAC applications. …
5 Effective Cooling Tower Treatment and Monitoring Strategies
In this fourth and final installment of our series on In August 2025, Essential Water Quality Management to Safeguard Health and Infrastructure, we will explore …
Protecting Your HVAC Operating Equipment Assets Requires Proper Water Quality Management
In this third installment of our series on Essential Water Quality Management to Safeguard Health and Infrastructure, we will discuss the importance of water …
Unintended Consequences of Chemical Disinfection – Health Effects
Last week, we introduced this four-part series Essential Water Quality Management to Safeguard Health and Infrastructure. In the second installment of this series, we will …
Essential Water Quality Management to Safeguard Health and Infrastructure
Water is our most critical asset. Whether it’s flowing through domestic plumbing, circulating in cooling towers, or feeding HVAC systems, water quality directly affects both …
Happy Labor Day from R.L. Deppmann
This Labor Day, we recognize the dedication of our team, customers, and industry partners whose hard work keeps our communities running strong. Thank you for …