Installation and Commissioning
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DOUBLE-SEAT VALVE INOVA (Type 580)
BA 058000.06 EN 15.11.2018
7 Installation and Commissioning
Before starting the installation and commissioning:
• Check the current system status (pressure, temperature, medium, operating
conditions).
• Check the valve for external and internal damages.
• Check the valve housing in the area of the valve disk for dirt contamination.
Note
Read the chapter "Basic Safety Advice".
The double-seat valve’s function should always be checked after carrying out any work.
The functional safety should also be checked before the system’s first commissioning and
after every disassembly and assembly of the valve.
7.1 Installation of the Valve Housing
• The valve inset, the lower bushing and the housing seals are to be taken out
before the valve housing is welded into the piping system.
• There must be sufficient space above the installed valve for the
assembly/disassembly.
• The valve housing should be welded in a tension-free state between the
supply and the outlet pipe. This also applies when the pipes are subject to
thermal load.
• The welding work (TIG) may only be carried out by qualified welders (EN 287-
1). Welding gas should always be used.
• The valve housing should be located in the piping system so that the
assembled valve is vertical and the leakage outlet is pointing downwards.
Requirements of the piping system
• The supply and outflow pipes must be installed in a way favorable to flow.
• The pipe cross-section of the supply and outflow pipes should at least
correspond to those of the valve’s inflow and outflow.
• A complete draining by gravity of the valve housing must be carried out.
• The leakage outlet should take place as far as possible without pressure and
danger in the corresponding outflow or collecting systems.
Operating the valve
• Check the valve housing for possible dirt residues.
• Inspect the valve-seat area for surface quality.
• Lightly grease the thread and seals.
• Locate the valve inset free of tension in the housing.
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