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Parker CPI™/A-LOK® Instrumentation Tube Fittings are designed as leak-free connections for process, power and instrumentation applications. The CPI tube fittings utilize a single ferrule for easy make-up and excellent performance in vibration applications. The “spring loaded” effect of the single ferrule creates a constant tension between the fitting body and fitting nut. The A-LOK two ferrule compression tube fittings are designed to provide reliable leak-free connections for applications that specify a two ferrule system. These single and two ferrule fitting designs are manufactured to the highest quality standards and are available in a broad range of sizes, materials and configurations.

NOTE:
  • Dimensions for reference only, subject to change.
  • Tube stub is pre-grooved as standard.
  • Add -Z6 for assembly of nuts and ferrules on the tube stub end.
    • NPT Male Adapter for metric tube
    Unit of Measure
    Items NPT Male Adapter for metric tube
    T2HF 3-1/8
    NPT Male Adapter for metric tube     		NPT Male Adapter for metric tube
    T2HF 4-1/8
    NPT Male Adapter for metric tube     		NPT Male Adapter for metric tube
    T2HF 6-1/8
    NPT Male Adapter for metric tube     		NPT Male Adapter for metric tube
    T2HF 6-1/4
    NPT Male Adapter for metric tube     		NPT Male Adapter for metric tube
    T2HF 6-3/8
    NPT Male Adapter for metric tube
    Connection Type N/A Tube to NPT
    Tube O.D. N/A 3.0 mm N/A 4.0 mm N/A 6.0 mm N/A 6.0 mm N/A 6.0 mm
    NPT Pipe Thread N/A 1/8 N/A 1/8 N/A 1/8 N/A 1/4 N/A 3/8
    A N/A 29.4 mm N/A 29.4 mm N/A 31.0 mm N/A 35.7 mm N/A 36.5 mm
    K N/A 13.5 mm N/A 14.3 mm N/A 15.9 mm N/A 15.9 mm N/A 16.1 mm
    R N/A 9.7 mm N/A 9.7 mm N/A 9.7 mm N/A 14.5 mm N/A 14.5 mm
    W HEX N/A 12.0 mm N/A 12.0 mm N/A 12.0 mm N/A 14.0 mm N/A 18.0 mm
    Bore N/A 1.8 mm N/A 2.0 mm N/A 4.0 mm N/A 4.0 mm N/A 3.0 mm