Specifications

Vessel
4
Caution! The positive pressure relief and seal-off
device protects the vacuum room from
overpressure. Re-evacuation may only be carried
out by
• manufacturer’s skilled staff
The protective cover (2) intercepts the valve insert
(1), when there is overpressure existing in the
vacuum room.
• Do not remove the protective cover (2).
• Protect the valve from heat as well as cooling, as
brittleness results in the loss of the operating
vacuum.
Structure of the Siphon
Item
Description
1 Waste gas/overflow line
2 Basic body with small flange connection
DN 50
3 Waste gas/overflow valve G 1/2”
4 Filling/withdrawal valve G 3/8”
5 Connection screwing
(double nipple ring R 3/8” - 3/4-16 UNF)
for flexible transfer hose
6 Filling/withdrawal line
The siphon serves for the filling and withdrawal of liquid
nitrogen.
Special designs (e.g. single / triple withdrawal) are available
on request.
Ball Valve Positions:
A - closed
B - open
2.7 Combined Positive Pressure
Relief and Seal-off Device
2.8 Siphon with Small Flange
Connection
Type EK