Scubatec Internal Tube Lock Nut
The internal tube lock nut is a mechanical clamping component designed for Scubatec second stages (compatible with the FX series). Its function is to screw onto the threaded end of the internal tube (valve line), securing it firmly to the regulator body on the side opposite the hose inlet.
Key features:
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Compatibility: Designed for Scubatec second stages, specifically for models that require axial locking of the valve assembly (such as the FX3 and FX4).
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Material: Made of marine-grade brass with a chrome finish to ensure high resistance to salt corrosion and long-lasting durability.
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Function: Ensures the stability of the metal conduit inside the technopolymer housing, preventing movements that could compromise the seal of the O-rings or the alignment of the lever.
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Design: It typically features a hexagonal shape or specific holes to allow tightening using standard wrenches or specialized tools.
Technical Note: During maintenance, it is important not to overtighten the nut to avoid putting stress on the plastic housing of the second stage. We recommend checking the condition of the threads and ensuring there is no limescale buildup before reassembly.
