Liquid Nitrogen Storage Dewars
Janis offers a complete line of aluminum liquid nitrogen storage Dewars. These Dewars are available in two configurations:
One configuration includes a Dewar with an NW-40 top flange and a special adapter that allows the Dewar to be used with a Janis SuperTran high-efficiency transfer line. The transfer line adapter includes a 0.5 in o-ring compression seal to provide a pressure-tight seal around the 0.5 in diameter storage Dewar leg of the Janis SuperTran transfer line. The transfer line adapter also includes a pressure gauge, 4 psi safety pressure relief valve, and a vent valve that can also be used to pressurize the Dewar by connecting it to a N2 gas cylinder with a regulator (cylinder and regulator are not included).
The other configuration includes a standard Dewar with a LN2 withdrawal device. The withdrawal device is useful for filling smaller containers with LN2 from the Janis Dewar. The withdrawal device includes a pressure gauge, safety pressure relief valve, a short stainless steel tube for dispensing LN2, and a shutoff valve. Please note that the Dewar that is configured for the withdrawal device does not have the NW-40 top flange, and is not compatible with the Janis transfer line adapter.
|Model||Capacity||Daily evaporation rate||Neck diameter||Outside diameter||Height||Filled weight||Empty weight|
|LN-10||10 L||0.15 L||2.25 in||11.25 in||23 in||30.3 lb||12.5 lb|
|LN-20||20 L||0.2 L||2.25 in||15 in||24.6 in||60 lb||23 lb|
|LN-35||35 L||0.25 L||2.25 in||18.5 in||25 in||94 lb||31 lb|
|LN-50||50 L||0.4 L||3.75 in||18.5 in||30.5 in||127 lb||38 lb|