Introduction
Parker CPI lnstrumentation Tube Fittings are designed as leak free conditions for process, power and instrumentation applications These single and two ferrule fittings are manufactured to the highest quality standards and are available in a broad range of sizes, materials and configurations.
Features
Tha Parker CPI..../A·LOK- tube fitting has been specifically designed for use on instrumentation, process and control
systems, analysers and environmental equipment employed in chemical, petroleum, power generating and pulp and paper plants. The CPI·/A·LOK- tube fitting has also found extensive application in other fields where a high quality tube filling is required.
Materials
Parker CPI 'A·LOK· fittings are available as standard in Heat Code Traceable, 316 stainless steel. Other standard
materials include steel, brass. aluminum, nickel-copper. Hastelloy C, Alloy 600, Hanium, 6Mo, Incoloy 625 and 825. Straight fittings are machined from cold finished bar stock and shaped bodies are machined from close grain forgings. The raw materials used fully conform to the chemical requirements listed in Specification Table 1. For nuclear and other critical applications, stainless steel CPI/A-LOK- fittings are readily available with documented heat code traceability.
Pipe Fittings/Adapters
Parker CPI/A·lOK-tube fittings are available in a wide variety of ISO and ANSI pipe thread configurations.
Tubing
Parker CPI/A-LOK tube fittings can be used with a wide variety of tubing materials and a broad range of tube wall
thicknesses. CPI/A-LOK-was equally well on both thin wall' and heavy wall tubing, Tubing and fitting materials should
be selected to be compatible with the fluid media. Due to thermal expansion characteristics and chemical stability, the tubing should be of the same material as those fitting. (The exceptlon is brass and copper tubing.)
Torque
Parker CPI/A-LOK-tube fittings do not twist the tubing during installation. CPI/A·LOK ferrule designs assure that all
make and ramake motion is transmittad axially to the tubing. Since no radial movement of the tubing occurs, the tubing is not stressed. The mechanical integrity of the tubing is maintained.
No Distortion
In rnake-up, there is no undue force in an outward direction
to distort the fitting body of ferrules to cause interference
between the ferrules and nut This assures that the nut will
back-off freely for disassembly and permits a greatar number
of easy remakes.
Sealing
Positive reliable connections with Parker CPI/A·LOK fittings have been qualified by exhaustive tests and over four decades of experience in the manufacture of quality tube fittings.
Nomenclature
Parker CPI/A·LOK- fittings part numbers are constructed from symbols that identify the size and style of the fitting and material used.
Assembly, Remake, Gaugeability
Proper assembly is the key component to a leak·free system.
Pressure Rating & Tubing Selection
In some cases where a male or female pipe thread is the second end of a Parker CPI/A-LOK fitting, such threads may be the pressure limiting factor of the tubing system.
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