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 …
Pump Minimum Flow Using a Cla-Val Back Pressure Valve
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 …
Pumping from an Atmospheric Tank: Pump and Tank Piping (Part 2)
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 …
Pumping from an Atmospheric Tank: Pump Selection and Installation (Part 1)
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 …
Flo-Control Gravity Check Valve Replacement
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 …
Heat Exchanger Types and Where to Use Them: Part 1 – Shell & Tube
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 …
Hot Water Heater Decarbonization: Using Condenser Water to Pre-Heat the Incoming Cold-Water
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 …
Circulator Pump Curves & Step Sized Selections. A Domestic Water Recirculation Example
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 …
Primary-Secondary or Primary-Variable Heating Systems: Which System to Choose?
Primary-Secondary vs. Primary-Variable hydronic boiler pumping systems each have advantages for the engineer to consider. Most people in the industry are in one camp or …
Primary Variable Heating Systems: Should I Pump Into the Boiler or Out of It?
We recently received several calls for our recommendation on whether to pump into the boiler or out of the boiler in a primary variable heating …