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Connectors designed to withdraw liquid nitrogen from vessels containing the cryogenic liquid (e.g., Dewar flasks). These connectors can regulate the pressure and the flow of the liquid nitrogen (e.g., up to 8 or 10 liters/minute); they may be attached to Dewar flasks of several different capacities (e.g., 25, 50 liter) following appropriate procedures for the connection; the content of the Dewar flask usually may be replenished without removing the connector. Liquid nitrogen container transfer connectors are mainly used for safe transference of the liquid to other devices such as a different cryogenic container.
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