Apollo 50 Especificações descarregar pdf (Página 12)

Vessel

Automatic Pressure Build-up Control System

(Option)

Item

Description

1 Pressure build-up line

2 Pressure build-up valve

3 Pressure build-up control valve

The automatic pressure build-up valve controls the pressure

in the vessel.

It is recommended with continuous withdrawal operation.

Close the pressure build-up valve (2) prior to filling,

relieving pressure or transporting.

Pressure Build-up Control

• Switch on by opening the pressure build-up valve (2),

Position A.

• Switch off by closing the pressure build-up valve (2),

Position B.

Changing the Operating Pressure

• Turning the regulating screw of the pressure build-up valve

in clockwise direction causes the pressure to increase.

• Turning the regulating screw of the pressure build-up valve

in counter clockwise direction causes the pressure to

decrease.

Automatic Pressure Build-up Control Valve Mode of

Operation:

• The pressure build-up control valve (3) will open when the

pressure in the tank drops.

• The liquid nitrogen is introduced into the pressure build-up

line (1) at the vessel bottom, it evaporates and is returned

to the tank.

• The pressure in the tank rises to the adjusted operating

pressure.

• The pressure build-up control valve (3) closes.

2.11 Pressure Build-up Control

System

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Apollo 50 Especificações Página 12