Page 74 - D30003

74 Parker Hannifin Corporation
Instrumentation Products Division
Huntsville, AL USA
http://www.parker.com/ipdus
INCH SIZE 1 thru 3
(1/16" - 3/16")
METRIC SIZE 2 thru 4
(2-4mm)
Only 3/4 turn from finger
tight is necessary to seal
and will result in additional
remakes of the fitting
A
B
A
INCH SIZE 4 thru 16
(1/4" - 1")
METRIC SIZE 6 thru 25
(6-25mm)
1-1/4 Turns from
Finger Tight
1. Parker instrument tube fittings are sold completely assem-
bled and ready for immediate use. Simply insert the tube as
illustrated until it bottoms in the fitting body. (If the fitting is
disassembled, note that the small tapered end of the ferrule(s)
go into the fitting body.)
2. Tighten nut finger tight. Then tighten nut with wrench an
additional 1-1/4 turns indicated below. Hold fitting body with
a second wrench to prevent body from turning. It is helpful
to mark the nut to facilitate counting the number of turns.
For maximum number of remakes, mark the fitting and
nut before disassembly. Before retightening, make sure the
assembly has been inserted into the fitting until the ferrule
seats in the fitting. Retighten the nut by hand. Rotate the nut
with a wrench to the original position as indicated by the pre-
vious marks lining up. (A noticeable increase in mechanical
resistance will be felt indicating the ferrule is being re-sprung
into sealing position.)
Only after several remakes will it become necessary to advance
the nut slightly past the original position. This advance (indi-
cated by B) need only be 10°-20° (less than 1/3 of a hex flat).
For Sizes above 16 (1"), the Parker IPD Hydraulic
Presetting Tool or Rotary Wrench Tool should be used.
Cat. 4290-INST.
Assembly and Remake Instructions
Gaugeability Instructions
2. Now select the proper size inspection gauge and try to
place it, as shown, between the nut and the body hex. If
gauge DOES NOT FIT AT ANY POINT between them, you
have correctly tightened the nut. If you can slip the gauge into
the space, the fitting is not properly made up, and you must
repeat the assembly procedure.
For additional information please contact your local authorized Parker Instrumentation distributor
or call Parker Instrumentation Products Division and ask for Bulletin 4230-B15.2.
1. From “finger tight” position, wrench 1-1/4 turns for 1/4" to
1" size fittings (6mm to 25mm) (1/16", 1/8", 3/16", 2mm 3mm
and 4mm size tube fittings only wrench 3/4 turn from finger
tight position). Hold fitting body hex with second wrench to
prevent body from turning as you tighten. It is a good idea to
mark the nut (scribe or ink) to help you count the turns.
For additional information please contact your local authorized Parker Instrumentation distributor
or call Parker Instrumentation Products Division and ask for Bulletin 4230-B10.
Parker CPI™/A-LOK® Tube Fitting part numbers use symbols to identify the size, style, and material. Tube and pipe thread
sizes begin with a number indicating their size in sixteenths of an inch. For example, 4=4/16” or 1/4”; 16=16/16” or 1.
NOTE: Lubrication of the nut is REQUIRED for proper assembly on all LARGER size fittings in both inch and metric
sizes. This requirement applies to:
• inch sizes of 20 and higher
• metric sizes of 25 and higher
D30003 74 5/12/05