Check valves are extensively used on centrifugal pumps in hydronic heating and cooling systems. The technology being used is well over fifty years old. Today, …
Hydronic Centrifugal Pumps – Open & Closed System Discharge Piping
The pump discharge is the most turbulent location in a hydronic system. There are simple rules to follow when piping up a pump discharge. Today, …
Hydronic Centrifugal Pumps – Closed System Suction Piping
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 …
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 …
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 …
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 …
Energy Savings Using Variable Speed Water Pumps on Constant Flow Condensers
When using multiple parallel condensers with constant speed pumps, the flow rate at part load may be excessive and problematic. Our last blog on this …
Multiple Condenser Cooling Tower Pumps – “Solutions for Excessive Flow”
The design and flow balance in systems with multiple parallel condensers is straight forward. We should expect no issues at full capacity. What happens when …
Balancing Constant Speed Cooling Tower Pumps with Multiple Condensers
It is important to check the single pump operation when balancing parallel pumps for multiple constant speed cooling tower pumps. The condensers and pumps are …