Preparatory Work - Burkert 2030 Mode D'emploi

7.2.5 Installation of tank bottom valve
Type 2033
For information about tanks and welding instructions, refer to
the standard ASME VIII Division I.
We recommend that the valve is welded before the tank is
assembled. However, it is still possible to weld the valves to
completely installed tanks.
Before welding, make sure that:
• the tank bottom valve does not impact any other device installation
component and that is always remains possible to assemble and
dismantle the actuator.
• a minimum distance between 2 welding points of 3x the thickness
of the tank wall is maintained.
To ensure that the tank drains optimally, the valve should be
welded in the middle of the drain
The diameter of the holes in the tank and in the flange must be equal.
The valve has two weld edges to simplify welding and positioning of
the valve. The weld edges are about 3 mm long. If the tank wall is more
than 3 mm thick, the valve must be positioned on the „Fig. 6".
→
Grind the drain wall down,
→
weld the valve in.
Position to be ground
on tank
Fig. 6: Position to be ground on tank
10
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Type 2030, 2031, 2031 K, 2032,
Assembly
Before welding, check the batch number indicated on the
supplied manufacturer's certificate 3.1.B.
Procedure:
→
Position the flange into the hole so that the flange surface just
touches the drain surface.
→
Fix 4 welding points and check the position of the valve.
→
Weld on the valve to it projects evenly inside and outside the tank
while gas is supplied and using welding material compatible with
valve steel 316L (DIN 1.4435).
→
Let the valves cool before grinding them smooth and polishing them
according to the applicable specifications.
These instructions are designed to assist in the installation of the tank
bottom valves and help avoid deformations and relaxations within the
tank.
Observe the laws applicable in the country with reference to
the qualification of welders and to welding procedures.
7.2.6

Preparatory work

→
Clean pipelines (sealing material, swarf, etc.).
→
Support and align pipelines.
Devices with welded body:
Before welding the body, the actuator and diaphragm must
be removed.
2033, 2037