Parts 1 and 2 of this this primer discuss three common types of flow isolation and control valves used in the cryogenic industry. Part 1, below, will focus on globe and gate valves, their basic components, how they work, and their applications. Part 2, in next month’s issue, will cover the same topics for ball valves as well as overall design considerations, materials of contruction, components and features, installation considerations, and general maintenance.
Cryogenic flow isolation and control valves
Valves are used all along the industrial gas and cryogenic gas supply chains – from production and transportation to trans-fill operations into storage containers. Three categories of valves used are: 1. valves that isolate product flow; 2. valves that control the flow of a gas or liquid, and 3. valves that regulate pressure or flow, or relieve excess pressure. These include globe, gate, ball, butterfly, pressure relief, diverter, needle, check, and diaphragm valves, and regulators.
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