2.1 RECOMMENDATIONS FOR INSTALLING THE VALVE
Insert the valve into the process according to the standard industrial practices
(preferably according to ASME or DIN 11850 standards).
2.1.1 Before installation
- Carefully clean the pipes.
- Remove all the pressures and tensible forces exerted on the valve by the pipes.
2.1.2 During installation
- Ensure the pipes are aligned.
- If the valve body must be welded onto the pipes, dismantle the valve (see § 4.2)
to separate the actuator and the diaphragm from the body to prevent them from
any damage.
- Preferably improve the surface quality by grinding the weldings.
- Carefully clean the body before mounting back the actuator and the diaphragm
(see § 4.2).
- Connect the control medium depending on the operating mode chosen:
•
Function A: to the lower orifice
•
Function B: to the upper orifice
•
Function I: to both orifices.
2.1.3 Installation for self-draining of the valve 2031
- Incline the valve of 15° to 30° (depending on the DN) with respect to the
horizontal (see figure below)
- Install the pipes with a 3 to 5% minimum gradient in the direction of flow.
During the assembling of the valve in self draining position, the leakage detection hole
must be at the lowest point.
Self-draining in a process system is ultimately the responsibility of the
system designer and/or end user.
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INSTALLATION
4
15°-30°
2031-2032-2033