Figure 3
2.2 Pneumatic Connections
Personal injury and/or property damage may occur from loss of process
control if the supply medium is not clean, dry oil-free air or non-corrosive gas.
Instrument quality air that meets the requirements of ISA Standard S7.3-1975 is
recommended for use with pneumatic equipment in process control environments.
Westlock Controls recommends the use of a 20 micron filter with all Falcon solenoids.
2.2.1 Tubing and Fittings
The use of copper, stainless steel, nylon or polyethylene tube is recommended for piping
up air circuits and equipment. As a general rule, pipe threaded fittings should not be
assembled to a specific torque because the torque required for a reliable joint varies with
thread quality, port and fitting materials, sealant used, and other factors. The suggested
method of assembling pipe threaded connections is to assemble them finger tight and
then wrench tighten further to a specified number of turns from finger tight. The
assembly procedure given below is for reference only; the fitting should not be over
tightened for this will lead to distortion and most likely, complete valve failure.
1.
Inspect port and connectors to ensure that the threads on both are free of dirt,
burrs and excessive nicks.
Tech-309
2-3
Summary of Contents for Intellis 7604
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