Manual discharge device. Turn pressure gauge on or off to operate. Takes approximately 10 minutes to pressurize to 5 psi. Once pressurized, it will dispense 1 - 1 1/2 cups of LN before losing pressure. Turn off and wait 10 minutes to re-pressurize. Intended to remain attached to dewar in between uses.
Each size includes a long detachable spout.
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MVE® Fixed Withdrawal Devices
This is by far the Best withdrawal device ever made. I have three of them . If you need a Dewar withdrawal device this is the one I would get without hesitation.