Steel expands when you heat it. This is a fact of nature and shouldn’t be overlooked when designing the HVAC steam piping system. One way …
Adjusting a Variable Frequency Drive (VFD) to Over Speed a HVAC Centrifugal Pump
The R. L. Deppmann Monday Morning Minutes from a few weeks ago discussed the option of a small amount of over speeding on B&G pumps …
How to Pick an HVAC Centrifugal Pump Part 11: Best Practices for Safety and Performance
As we conclude this series on how to select a centrifugal pump for your hydronic applications, we want to leave you with the following “best …
How to Pick a HVAC Centrifugal Pump Part 10: HVAC Pump using a Variable Frequency Drive
The last R L Deppmann Monday Morning Minutes described the recommended limitations when over speeding a HVAC pump with a Variable Frequency Drive (VFD). Today …
How to Pick an HVAC Centrifugal Pump Part 8: Motors for HVAC Centrifugal Pumps
Motor speed for HVAC centrifugal pumps is a hot topic these days. Last week, the R. L. Deppmann Monday Morning Minute began exploring motors and …
How to Pick an HVAC Centrifugal Pump Part 8: Motors for HVAC Centrifugal Pumps
When selecting HVAC centrifugal pumps, the RPM or speed of the motor is an important choice engineers and designers make regularly. The default speed is …
How to Pick an HVAC Centrifugal Pump Part 7: Mechanical Seal Materials
Every week, our customer service team fields questions concerning the seal construction materials for various applications. This week, the R. L. Deppmann Monday Morning Minutes …
How to Pick an HVAC Centrifugal Pump Part 6: Internally Vs. Externally Flushed Mechanical Seals
Whether you install or design hydronic HVAC systems, you are probably aware that pump seals play a vital role in the operation of pumps and …
4th of July and a Birthday Celebration
Tomorrow we celebrate and remember the birth of our Nation. R.L. Deppmann Company is also celebrating a birthday. R.L. Deppmann Company is 90 years old! Founded …
How to Pick a HVAC Centrifugal Pump Part 5: Choosing a Single or Double Suction Pump
Last week, the R. L. Deppmann Monday Morning Minutes described the differences between flex coupled HVAC pumps, split coupled pumps, and direct-coupled pumps. If the …