Operating Manual
Double Seal Valve
75100 / 75200
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2011-05-31
11 / 19
Caution – functional impairment or material damage!
Installation instructions:
• Valves are installed in the piping system upright and free of tension.
• Valves must be dismantled in advance and all seals in the valve housing for
welding in removed.
• The pipe ends to be welded should be sawn off flush and at right-angles
and deburred.
• The housing is then welded into the piping system free of tension.
• Remove welding residue from the piping system.
• The welding work (TIG, welding gas) should only be carried out by qualified
welders (EN 287-1).
• There must be sufficient free space around the installed valve for assembly
and maintenance tasks later on.
Caution – functional impairment or material damage!
Assembly instructions:
• Only disassemble valves after the pressure spring has been mechanically
blocked.
• Do not damage the valve insert, sliding surfaces or sealing surfaces.
Only use suitable tools and tensioning devices.
• Only use suitable and approved spare parts from the manufacturer.
• Bolts, slightly grease threads. Tighten parts evenly.
Caution – functional impairment or material damage!
Seal change:
• Use a suitable tool (dig hook) to remove the seals.
• The sealing ring groove should be cleaned thoroughly before installing the
new seals.
• Slightly grease the seals (only use grease approved for the field of food
processing).
• Insert seals evenly into the sealing ring groove.