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ZTKS0156 / Z31820 / Rev.: 03
Safety
Quench Valve
The quench valves (1) are the safety devices of the helium vessel. They open with a
defined pressure. In case of an accidental overpressure in the helium vessel the quench
valves will release the pressure smoothly.
One-way Valves
The one-way valves at the helium flow system (2) keeps air and moisture from entering
the helium vessel in case of an accidental underpressure inside the vessel.
Pressure Relief Valve
The pressure relief valve (3) is the safety device of the cold head turret. It opens with a
defined pressure. In case of an accidental overpressure in the cold head turret the
pressure relief valve will release the pressure smoothly.
Drop-off Plate
The drop-off plate (4) is a safety device of the RT vessel. If the vacuum breaks, the drop-
off plate will open. In case of an accidental overpressure in the RT vessel the drop-off
plate will release the pressure smoothly.
Cryogenic Refrigerator Parts
For information about the safety devices of the Cryogenic Refrigerator parts refer to the
supplied separate manual.
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