CHICAGO — Four-way reversing valves are at the heart of heat pump systems, and are indeed necessary to their function. An American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc.

In order to service and troubleshoot an air-source heat pump system, a service technician must understand the unit's sequence of operation. This is the order of events the system undergoes to cycle ...

The challenges associated with process systems operating in highly corrosive marine and salt water environments, requires amongst many things, control valves which are designed to provide high ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is a patent model for a Sulzer ...

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