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Appendix
Appendix
Installation & Maintenance
Assemblies
Equipment & Accessories
Fittings
Hoses
Fitting Identification
Measuring Threads and Seat Angles
Tools required: ID/OD Calipers, Seat Angle Gauge
(
English and Metric), Thread Pitch Gauge
Compare Measurements
to the Tables
ID/OD measurements, thread pitch and seat angle will be
used to identify the fitting. Measurements taken can be
used to compare with the dimensions found on charts in
the following pages.
As an example, a fitting will be defined as: Continental
ContiTech B2-NPMX-0606 with 3/8-18 threads.
From the hydraulic catalog, the fitting can be identified
as a NPTF/MALE/Swivel.
The -6 fitting has 3/8-18 threads, which can be identified
using calipers, thread gauge and the following tables.
Measuring Threads
A caliper is used to measure the OD of male threads and
the ID of female threads. Measure at the largest point.
In some cases, threads may be worn, and the exact
measurement taken may not match exactly to the thread
charts. For accuracy, it is recommended the male thread
be measured.
Measuring Thread Pitch
A Thread Pitch Gauge is used to determine the number
of threads per inch or the distance between threads in a
metric connection. To ensure an accurate reading, make
sure the fit of the thread gauge is snug.
Measuring Seat Angle
A Seat Angle Gauge is used to measure the angle of the
sealing surface. For either male or female fittings, place
the gauge on the sealing surface. An accurate reading
is taken when the gauge is parallel to the centerline of the
coupling.