Internal tack welding of the tank valve:
1. Place the tank valve into a pre-drilled hole so that the tank valve is flush with the
inner surface of the dish.
2. Tack weld at A and B (shown below). Check the inner surface to ensure the valve is
flush.
3. Make necessary corrections if necessary.
4. Tack weld at C and D (shown below).
Follow above instructions. Do not overheat the material.
Tack Welding from INSIDE the vessel head
13.7 External tack welding of the tank valve:
1. Start with the dished head turned upside down on a clean working surface and fill it
with protective gas (keep the gas flowing during the welding process).
2. Tack weld the tank valve as follows:
a) Start with A then B then C then D per figure 1.7
b) Next follow the numbers as indicated 1 through 12 below
Follow above instructions. Do not overheat the material.
m-radialdiaphragmvalve-en-02 41
To Next Page
Loading...