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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.
  • A and C dimensions are typical finger-tight.
  • See catalog 4260 Pipe/ISO Fittings for detailed information.
  • Sealing Washer on page 76to be used with this fitting.
    • BSPP Gauge Connector for fractional tube
    Unit of Measure
    1 

    Item #

    Connection Type

    BSPP Thread

    A

    C

    W HEX

    Bore

    4-4GC GBZ N/A CPI™ to FBSPP N/A 1/4 N/A 1.48 in N/A .70 in N/A 3/4 in N/A .19 in
    4-6GC GBZ N/A CPI™ to FBSPP N/A 3/8 N/A 1.48 in N/A .70 in N/A 7/8 in N/A .19 in
    4-8GC GBZ N/A CPI™ to FBSPP N/A 1/2 N/A 1.70 in N/A .70 in N/A 1 1/16 in N/A .19 in
    5-4GC GBZ N/A CPI™ to FBSPP N/A 1/4 N/A 1.51 in N/A .73 in N/A 3/4 in N/A .21 in
    5-8GC GBZ N/A CPI™ to FBSPP N/A 1/2 N/A 1.59 in N/A .73 in N/A 1 1/16 in N/A .28 in
    6-4GC GBZ N/A CPI™ to FBSPP N/A 1/4 N/A 1.55 in N/A .76 in N/A 3/4 in N/A .21 in
    6-6GC GBZ N/A CPI™ to FBSPP N/A 3/8 N/A 1.55 in N/A .76 in N/A 7/8 in N/A .26 in
    6-8GC GBZ N/A CPI™ to FBSPP N/A 1/2 N/A 1.63 in N/A .76 in N/A 1 1/16 in N/A .28 in
    8-4GC GBZ N/A CPI™ to FBSPP N/A 1/4 N/A 1.65 in N/A .87 in N/A 13/16 in N/A .21 in
    8-6GC GBZ N/A CPI™ to FBSPP N/A 3/8 N/A 1.75 in N/A .87 in N/A 7/8 in N/A .26 in
    8-8GC GBZ N/A CPI™ to FBSPP N/A 1/2 N/A 1.90 in N/A .87 in N/A 1 1/16 in N/A .28 in
    4FSC4GC N/A A-LOK® to FBSPP N/A 1/4 N/A 1.48 in N/A .70 in N/A 3/4 in N/A .19 in
    4FSC6GC N/A A-LOK® to FBSPP N/A 3/8 N/A 1.48 in N/A .70 in N/A 7/8 in N/A .19 in
    4FSC8GC N/A A-LOK® to FBSPP N/A 1/2 N/A 1.70 in N/A .70 in N/A 1 1/16 in N/A .19 in
    5FSC4GC N/A A-LOK® to FBSPP N/A 1/4 N/A 1.51 in N/A .73 in N/A 3/4 in N/A .21 in
    5FSC8GC N/A A-LOK® to FBSPP N/A 1/2 N/A 1.59 in N/A .73 in N/A 1 1/16 in N/A .28 in
    6FSC4GC N/A A-LOK® to FBSPP N/A 1/4 N/A 1.55 in N/A .76 in N/A 3/4 in N/A .21 in
    6FSC6GC N/A A-LOK® to FBSPP N/A 3/8 N/A 1.55 in N/A .76 in N/A 7/8 in N/A .26 in
    6FSC8GC N/A A-LOK® to FBSPP N/A 1/2 N/A 1.63 in N/A .76 in N/A 1 1/16 in N/A .28 in
    8FSC4GC N/A A-LOK® to FBSPP N/A 1/4 N/A 1.65 in N/A .87 in N/A 13/16 in N/A .21 in
    8FSC6GC N/A A-LOK® to FBSPP N/A 3/8 N/A 1.75 in N/A .87 in N/A 7/8 in N/A .26 in
    8FSC8GC N/A A-LOK® to FBSPP N/A 1/2 N/A 1.90 in N/A .87 in N/A 1 1/16 in N/A .28 in
    Unit of Measure
    1