The Hydraulic Institute (HI) is a global authority on pumps and pumping systems. Think of them as the ASHRAE of pump design and testing. HI, …
Net Positive Suction Head (NPSH) Part 1 of 5 – Terms and Definitions
One of the most misunderstood concepts in pump selection for hydronic design is the net positive suction head or NPSH. Problems with NPSH can spell …
Hydronic Heating Buffer Tanks – Part 3 – Variable Primary
Hydronic heating system buffer tanks requirements and sizing were addressed in parts 1 & 2 of this short series. I received a couple of questions …
R. L. Deppmann Thanksgiving Wishes
Always, but even more during this trying year, R. L. Deppmann says… THANK YOU
Hydronic Heating Buffer Tanks Part 2 – Sizing
Hydronic heating system buffer tanks are used to add water volume to the system to help avoid excessive cycling of the boiler. How do you …
Hydronic Heating Buffer Tanks – Part 1 – Location
We know that cycling a hydronic condensing boiler on and off too often will waste energy. There are other problems caused by a boiler cycling …
Primary – Secondary Piping and Water Tube Boiler Cycling
Primary – Secondary piping is recommended with most water tube condensing boilers. Once the boilers have turned down to the lowest firing rate, cycling will …
Flow Meter and Balance Valve Installation – Minimum Pipe Diameters for Installation
The installation of hydronic and steam flow meters often involves a term simply stated as “minimum pipe diameters.” You may hear that a meter or …
Circuit Setter Balance Valve and Flow Meter Sizing and Turndown
We recently received an email from an engineer in Western Michigan concerning a low-flow, high-head pump process application and the proper balance valve specification. This …
7 Tips to Save on Labor Hours in Hydronic and Steam Systems Building Projects
R.L. Deppmann takes this opportunity to thank the fitters, plumbers, and electricians who take such special care to properly install products we provide. Our doors …