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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.
  • For use with SAE J.1926/1 port can also be used with MS-16142 port.
  • Parts are supplied with nitrile o-rings as standard. For Fluorocarbon o-rings, add the suffix "-VO".
  • Other o-rings available upon request.
  • Adapter fitting for connection of NPT to SAE female threads.
  • NPT Thread to SAE Straight Thread Adapter for fractional tube
    Unit of Measure
    Items NPT Thread to SAE Straight Thread Adapter for fractional tube
    4-4 FHOA
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    6-6 FHOA
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    8-8 FHOA
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    12-12 FHOA
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    16-16 FHOA
    NPT Thread to SAE Straight Thread Adapter for fractional tube
    Connection Type N/A NPT x SAE Straight Thread
    T2 NPT Thread N/A 1/4 N/A 3/8 N/A 1/2 N/A 3/4 N/A 1
    T1 SAE Straight Thread N/A 7/16-20 N/A 9/16-18 N/A 3/4-16 N/A 1 1/16-12 N/A 1 5/16-12
    A N/A 1.20 in N/A 1.26 in N/A 1.53 in N/A 1.75 in N/A 2.00 in
    R1 N/A .56 in N/A .56 in N/A .76 in N/A .75 in N/A .94 in
    R2 N/A .36 in N/A .39 in N/A .44 in N/A .59 in N/A .59 in
    W HEX N/A 9/16 in N/A 11/16 in N/A 7/8 in N/A 1 1/4 in N/A 1 1/2 in
    O-Ring As Uniform Dash No. N/A 3-904 N/A 3-906 N/A 3-908 N/A 3-912 N/A 3-916