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This module restores the mask with a NATO40 screw thread. So you can use this with NATO40 attachments.

This valve is a two way valve so inlet air and outlet air goes through the same hole - perfect for rebreathing


Two versions of this module availiable - One contains a screw thread and requires a GP5 insert, the second does not (but it is harder to remove)


KB3D GP5 Two-way Valve

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