Scubatec Internal Tube Retaining Nut
The internal tube retaining 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 body), securely fastening it to the regulator housing on the opposite side to the hose inlet.
Key Features:
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Compatibility: Designed for Scubatec second stages, particularly for models that require axial locking of the valve assembly (such as FX3 and FX4).
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Material: Made of marine brass with a chrome finish to ensure high resistance to salt corrosion and long-term durability.
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Function: Ensures the stability of the metal conduit within the technopolymer body, preventing movements that could compromise O-ring sealing or lever alignment.
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Design: Typically features a hexagonal shape or specific holes to allow tightening with standard wrenches or dedicated tools.
Technical Note: During maintenance, it is important not to overtighten the nut to avoid stressing the plastic housing of the second stage. It is recommended to check the condition of the thread and the absence of scale before reassembly.
