WITT non-return valves (check valves) for reliable protection against dangerous reverse gas flow. Every non-return valve (check valve) 100% tested.
The best non-return valves (check valves) in the world.
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Company certified ISO 9001 and PED 97/23/EC Module H CE-marked in accordance with PED 97/23/EC Cleaned for Oxygen Service according to EIGA IGC Doc 13/12/E: Oxygen Pipeline and Piping Systems
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