Introduction
Parker CPI™/A-LOK® Instrumentation Tube Fittings are designed
as leak-free connections 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
The 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 fitting
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, Titanium, 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. For a full
line of these fittings, see Catalog 4260.
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® seals 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 the fitting.
(The exception is brass fittings and copper tubing.)

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