R. L. Deppmann News and Information

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

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centrifugal pump motor curve

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

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mechanical seal

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

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Pump seal

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

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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

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How to Pick a HVAC Centrifugal Pump Part 4: Pump Coupling Types – Close, Split, or Flexible Coupled?

When selecting the HVAC centrifugal pump, there are different choices. In the last R L Deppmann Monday Morning Minute we examined the mechanical room space

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coupler

How to Pick a HVAC Centrifugal Pump Part 3: Mechanical Room Space & Type of Pump Selected

The last R L Deppmann Monday Morning Minutes briefly defined the differences between inline and base mounted pumps. When the engineer or contractor is selecting

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Base Mounted Pump

How to Pick an HVAC Centrifugal Pump Part 2: Types of Pumps and Seismic Considerations

One of the first decisions you must make when selecting an HVAC pump is to determine which type of pump you need. There are specialty

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Types of Pumps and Seismic Considerations

How to Pick an HVAC Centrifugal Pump Part 1: Designing for Owner Satisfaction

Hydronic pumps all do the same basic thing—they circulate water. So why are there so many different types and configurations? And what are the criteria

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Medium and High Pressure Steam Vented Flash Tank Trim: Part 2

Steam flash tanks provide a valuable service in medium and high-pressure condensate return systems. The last R. L. Deppmann Monday Morning Minutes (MMM) article described

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Medium and High Pressure Steam Vented Flash Tank Trim
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