Burkert 2103 Manuel D'utilisation page 31

Type 2103, 2104, 2105
For further information on containers and welding instructions,
please refer to the standard ASME VIII Division I.
Prior to welding, please check to ensure that:
• The tank bottom valve does not collide with other equipment compo-
nents and assembly/disassembly of the actuator is always possible.
• A minimal distance between two welding joints three times the
thickness of the container wall is adhered to.
• The hole diameter in the tank and the housing flange must be the
same size. The housing flange has two welded edges to facilitate
positioning and welding of the valve. The welded edges are approx.
3 mm wide. If the container wall is more than 3 mm thick, it must
be ground down so that the discharge surface is touching the
housing flange surface.
Prior to commencing the welding process, check the charge
number indicated on the supplied manufacturer's certificate
3.1.B.
Observe the applicable laws and regulations of the respective
country with regard to the qualification of welders and the
execution of welding work.
Procedure:
→
Position the flange into the hole so that the flange surface is
tangent to the drain surface.
→
Tack 4 welding points and check the position of the valve.
→
Weld the valve evenly to the inside and outside of the container,
with gas being supplied and using welding material compatible
Installation
with the valve's stainless steel 316L.
→
Allow the welds to cool down before burnishing and cleaning
them according to the applicable specifications.
Observance of these instructions will prevent deformation and tension
inside the containers.
8.7.3 Installation of the actuator (welded
body)
Installation for actuator with control function A:
NOTICE!
Damage to the diaphragm or the seat contour!
▶ When installing the actuator, ensure that the valve is in open
position.
→
Control function A pressurize the pilot air port 1 with com-
pressed air (5 bar): valve opens.
→
Lightly cross-tighten the body screws until the diaphragm is
between the body and actuator.
Do not tighten the screws yet.
→
Actuate the diaphragm valve twice.
→
Without pressurization tighten the body screws to the permitted
tightening torque (see following table "Tab. 14: Tightening torques
for diaphragms").
english
31