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heat or cool variable flow system chart
heat or cool variable flow system chart

Developing Variable Speed Pump Curves

RL Deppmann February 5, 2024Hydronic System Design, Selection and Specification, Curves, Efficiency, Speed, Affinity Laws, Monday Morning Minutes, Affinity Laws, Pumps

Most heating and cooling pumps in commercial buildings operate in a variable speed mode. Today, we take your Monday Morning Minutes to explore the variable …

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selection and specificationhydronic system designpumpspump curvesvariable speedaffinity laws

Three-way and Two-way Control Valve Basics in Hydronic Systems

RL Deppmann January 29, 2024Selection and Specification, Curves, Control Valves, Valves, Monday Morning Minutes, Controls, Pumps, Hydronic System Design

Centrifugal pumps operate at the intersection of the pump curve and the system curve. Last week we developed the system curve for an example closed …

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controlsthree way control valvepumpstwo way control valvehydronic system design

What’s On a Pump Curve?

RL Deppmann January 15, 2024Pumps, Selection and Specification, Curves, Monday Morning Minutes

  Selecting centrifugal pumps for heating, cooling, process, and plumbing systems is easy once you understand how they work and what you are seeing when …

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pumpspump selectionpump curve

Centrifugal Pumps: How Do They Work?

RL Deppmann January 8, 2024Monday Morning Minutes, Pumps, Operation

How a centrifugal pump moves water may seem too basic for engineers and contractors to spend time reading about. However, understanding how a centrifugal pump …

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pumpscentrifugal pumpsoperation
USGS hardiness map
USGS hardiness map

Ion Exchange Water Softener Packaged Solution

Norm Hall May 8, 2023Monday Morning Minutes, Pumps, Minimum Flow, Chilled Water

There are times when a commercial ion exchange water softener is the preferred solution for hard water in potable water systems. The map above is …

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water softenerion exchangepumpslync by wattsWater Softener Packaged Solution
Image of the bobco kit
Image of the bobco kit

Determining Pump Operating Condition Using the Single Gauge Method for Readouts and Diagnosis

Brad Notter March 29, 2023Service Tip of the Month

Featuring the Bobco Gauge Package – The Most Accurate Gauge Reading Possible This video discusses:  The benefits of using a single gauge kit for pump …

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pumpsbobcobobco gauge packagepump operating conditiongauge readingaccurate gauge readinggauge

Centrifugal Pumps: Determining Flow Rate Using Amp Readings

Norm Hall January 23, 2023Commissioning and Balance, Pumps, Monday Morning Minutes, Motors, Pumps, Commissioning and Balance

We understand that the best way to determine the flow rate of an operating pump is the proper readout of gauges attached to the pump …

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centrifugal pumpsamp readingsflow ratepumps

Hydronic Systems Pump Minimum Flow Methods

Norm Hall January 16, 2023Pumps, Minimum Flow, Control, Monday Morning Minutes

Minimum pump flow rate is critical to the trouble-free operation and longevity of the centrifugal pump. In the last blog we described the use of …

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pumpshydronic systemHydronicsNorm HallBell and Gossett

Pump Minimum Flow Using a Cla-Val Back Pressure Valve

Norm Hall January 9, 2023Pumps, Valves, Minimum Flow, Control, Pressure Regulating, Monday Morning Minutes

Minimum pump flow rate is critical to the trouble-free operation and longevity of the centrifugal pump. The pressure sustaining valve or back pressure valve is …

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pumpsHydronicsNorm HallBell and Gossett

Pumping From an Atmospheric Tank: Pump and Tank Control (Part 3)

Norm Hall January 2, 2023Pumps, Variable Speed, Control, Monday Morning Minutes

Let me start by wishing everyone a Happy and Prosperous New Year. This blog begins the 14th year of the R. L. Deppmann Monday Morning …

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TanksNorm Hallpumpsvariable speedPiping
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  • Products
    • Overview
    • Pumps and Accessories
    • Boilers and Water Heaters
      • Water Heater Stock
      • Boiler Stock
    • Hydronic Systems
    • Plumbing Systems
    • Steam and Condensate
    • Variable Frequency Drives (VFDs)
    • Glycol Solutions
    • Snowmelt Designs
  • System Design
    • Overview
    • Project Gallery
    • Selection and Design Tools
  • Water Solutions
  • Contractors
  • Service & Parts
    • Overview
    • Startup and Warranty
    • Parts
    • Service and Maintenance
  • Education
    • Overview
    • Basic Hydronic Blog Articles
    • Training Opportunities
    • Factory Classes
  • About RLD
    • Overview
    • Team Deppmann
    • R.L. Deppmann Locations
    • Careers
    • Community Engagement
    • Press and News