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Primary Secondary Piping Basics: Part 2 – The Common Pipe (also Referred to as the Decoupler)

Norm Hall October 2, 2023Monday Morning Minutes, Hydronic Design, Primary Secondary Piping, Primary Secondary Piping, Terms

R. L. Deppmann Company receives calls about the size and the length of the common pipe just about every week. Gil Carlson, ASHRAE fellow and …

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Primary Secondary Piping Basics: Part 1 – Terms

Norm Hall September 25, 2023Monday Morning Minutes, Hydronic System Design, Primary Secondary Piping, Terms

The basic design concepts of piping are important for a properly operating hydronic heating or cooling system.  We have a great number of new engineers, …

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hydronic heatingPipingBell and Gossettvalve replacementPrimary Secondary Tertiary Systems

Hydronic Systems Pump Minimum Flow Methods

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

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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hydronic systemHydronicsNorm HallBell and Gossettpumps

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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HydronicsNorm HallBell and Gossettpumps

Pumping from an Atmospheric Tank: Pump and Tank Piping (Part 2)

Norm Hall December 19, 2022Pumps, NPSH, Selection and Specification, Monday Morning Minutes

What can be simpler than pumping water from an open or atmospheric tank into another tank or system? What seems simple to many opens a …

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Pumping from an Atmospheric Tank: Pump Selection and Installation (Part 1)

Norm Hall December 12, 2022Pumps, NPSH, Selection and Specification, Monday Morning Minutes

What can be simpler than pumping water from an open or atmospheric tank into another tank or system? What seems simple to many opens a …

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NPSHpumpsvariable speedhydrovarNorm HallBell and Gossett

Flo-Control Gravity Check Valve Replacement

Norm Hall November 28, 2022Valves, Hydronic Design, Control Valves, Check Valves, Monday Morning Minutes

You have a Bell & Gossett Flo-Control valve on the primary secondary bridge of an older hydronic system. It has been there for over five …

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check valveshydronic systemshydronic systemflo-controlHydronicsBell and GossettPSIG

Heat Exchanger Types and Where to Use Them: Part 1 – Shell & Tube

Norm Hall June 20, 2022Boilers, Heat Exchangers, Selection and Specification, Piping and Installation, Monday Morning Minutes

There are a variety of unfired liquid to liquid and steam to liquid heat exchangers for the engineer to choose from. The Gasketed Plate, Brazed …

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Bell and GossettHVAC SystemsHeat ExchangersNorm Hall

Hot Water Heater Decarbonization: Using Condenser Water to Pre-Heat the Incoming Cold-Water

Norm Hall June 13, 2022Water Heaters, Plumbing System Design, Heating, Monday Morning Minutes

Decarbonization does not always automatically become electrification. The enterprising engineer will first look at diverse ways to reduce the carbon use. Here is an example …

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CondensingWater HeatersHydronicsNorm HallBell and GossettHeat Exchangers
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scientist vs engineer

Circulator Pump Curves & Step Sized Selections. A Domestic Water Recirculation Example

Norm Hall May 9, 2022Monday Morning Minutes, Pumps, Speed

Circulator series pumps are those small inline pumps that have fixed impeller choices with no impeller trimming available. When these pumps have ECM technology, the …

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BoilersHydronicsNorm HallBell and Gossettpumps
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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