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impeller

Hydronic Pump Piping and Trim: Pump Suction Energy Levels

Norm Hall March 19, 2018Monday Morning Minutes, Pumps, Selection and Specification, Types

I frown a bit when reading about a product and the only place you find a key tip to avoiding problems is in the troubleshooting …

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Pipingpumpsclosed systems
whirlpool pump suction
whirlpool pump suction

Hydronic Pump Piping and Trim: The Pump Suction

Norm Hall March 12, 2018Installation, Monday Morning Minutes, Pumps, Selection and Specification, Types

The piping at the suction side of the pump is the most important and, for some engineers and designers, the most misunderstood part of hydronic …

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hydronicPUMP SUCTIONpumps

Hydronic Pump Piping and Trim: Flexible Diffuser Fittings

Norm Hall March 5, 2018Flexible Connectors, Flexible Connectors, Installation, Monday Morning Minutes, Pumps, Hydronic System Design, Vibration, Expansion and Noise Control

Pump installations tend to require a great number of spool pieces to meet the Hydraulic Institute’s and the equipment manufacturers’ recommendations. Before we get into …

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Hydronic Pump Pipingflexible diffuser fittingspumps
pump_suction_sides
pump_suction_sides

Hydronic Pump Piping and Trim: Suction Diffuser Fittings

Norm Hall February 26, 2018Installation, Suction Diffusers, Hydronic, Monday Morning Minutes, Pumps, Valves, Air and Dirt Control, Strainers

Pump suction piping is one of the areas where problems of frequent repair or noise will originate. There is a lot of confusing information out …

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hydronicSuction Diffuser Fittingsvalvespumps
pump_suction_sides
pump_suction_sides

Hydronic Pump Piping and Trim: Suction Side

Norm Hall February 19, 2018Installation, Monday Morning Minutes, Pumps

The pump suction piping and specialties are somewhat simple but can be a cause of headaches if a few simple rules are forgotten. This week …

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hydronicpump installationpumps
Domestic Hot Water Recirculation Systems
Domestic Hot Water Recirculation Systems

Variable Speed and ECM Smart Pumps in Domestic Hot Water Recirculation Systems

Norm Hall December 11, 2017Pumps, ECM, Domestic Water Recirculation, Monday Morning Minutes

Domestic hot water supply temperatures and the recirculation system control are receiving a great deal of attention these days. Concerns about legionella growth with low-temperature …

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Domestic Water RecirculationECMpumpsECM Smart Pumpsvariable systems
Dry Return - Return Temperature & Condensate Pumps: Steam & Steam Heat Exchanger Basics
Dry Return - Return Temperature & Condensate Pumps: Steam & Steam Heat Exchanger Basics

Return Temperature & Condensate Pumps: Steam & Steam Heat Exchanger Basics Part 15

Norm Hall April 24, 2017Monday Morning Minutes, Pumps, Steam, Condensate, Condensate Pumps

One challenge to selecting a steam condensate return unit is the return temperature of the condensate after leaving the steam heat exchanger. This week’s R. L. …

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SteamCondensate Pumpspumpsheat exchanger
Control Curve of 30% of Design Head and Variable Speed
Control Curve of 30% of Design Head and Variable Speed

Bell & Gossett Part Load Efficiency Value Part 4: End-of-Curve Selections

RL Deppmann July 18, 2016Monday Morning Minutes, Pumps, Selection and Specification, Curves, Operation, End of Curve

When looking at Bell and Gossett pump selections, we often find higher part load efficiency (PLEV) pump choices are to the right of the BEP, or best …

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curvespumpspump operation
How to Use the Part Load Efficiency Value
How to Use the Part Load Efficiency Value

Bell & Gossett Part Load Efficiency Value Part 3: HVAC Pump Selection

RL Deppmann July 11, 2016Speed, Monday Morning Minutes, Motors, Pumps, Selection and Specification, Selection and Specification, Speed

In the last two Monday Morning Minutes, we introduced the PLEV, or Part Load Efficiency Value, from Bell and Gossett. When we use part load …

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pump selectionMotorspumps
How to Use the Part Load Efficiency Value
How to Use the Part Load Efficiency Value

Bell and Gossett Part Load Efficiency Value Part 2: How to use PLEV

RL Deppmann June 27, 2016Monday Morning Minutes, Pumps, U.S. DOE Standards, Selection and Specification, Codes and Standards, Efficiency, Pump Efficiency

In the last Monday Morning Minutes post, we introduced the PLEV, or Part Load Efficiency Value from Bell and Gossett. This week we look at some …

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department of energystandardsBell and GossettUS DOEpumpsDOE
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  • Products
    • Overview
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      • Water Heater Stock
      • Boiler Stock
    • Hydronic Systems
    • Plumbing Systems
    • Steam and Condensate
    • Variable Frequency Drives (VFDs)
    • Glycol Solutions
    • Snowmelt Designs
  • System Design
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  • About RLD
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