Swagelok 16FK MHSU User manual

Multihead Hydraulic Swaging Unit
( MH SU )—16 F K
Operating Instructions
READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE USING THE MHSU.
Definitions
Statements and symbols are used in this document
to identify safety concerns. Read the definitions
below before setting up and operating the MHSU.
CAUTION
Statements that identify conditions or
practices that could result in damage to the
equipment or other property.
WARNING
Statements that identify conditions or
practices that could result in personal injury
or loss of life.
WARNING, EYE PROTECTION
Safety glasses must be worn when setting
up and operating the MHSU. Failure to wear
safety glasses may result in serious personal
injury.
CAUTION
Do not tamper with or alter any components
of the MHSU. Tampering with or altering
components of the MHSU may cause
equipment failure and/or affect fitting
performance.
Safety Precautions
WARNING
If a malfunction or any sign of excess
leakage occurs, do not use the MHSU.
Return it to your authorized Swagelok
representative for assistance. Continued use
may result in serious personal injury, cause
equipment failure, and/or affect fitting
performance.
CAUTION
Do not use the hand pump after the
indicator knob releases. Failure to stop
pumping after the indicator knob releases
may affect fitting performance.
1 in. medium-pressure 16FK MHSU with base
for use with 1 in. medium-pressure tube fittings

2
16FK MHSU with Baseplate
Pump
bypass
valve
Hydraulic pump
Gap inspection gauge
Indicator knob
Chamfer block
Base
Lock ring
Safety glasses
Shipping Case Contents
The following items ship with each case:
■
16FK MHSU Hydraulic Swaging Unit
■
1 in. Chamfer Block
■16FK Gap Gage
■Safety Glasses
■16FK MHSU Operating Instructions
Die head

3
CAUTION
If the indicator knob does not snap into place
or is not flush with the housing, the piston
may not be fully retracted. This problem may
be caused by the bypass valve being closed
or by the piston binding. Do not proceed
until the unit is functioning properly. Contact
your authorized Swagelok sales and service
representative for further assistance.
6. Close the pump bypass valve to the finger-tight
position by rotating the valve handle clockwise
until it stops.
Fig. 2 Indicator Knob in Swaging Position
Fig. 1 Nut and Ferrule Orientation
3. Insert the arbored nut and ferrule set into the
Swagelok medium-pressure die. Thread the
nut into the die head to finger-tight. Remove
the arbor, leaving the nut and ferrules in the die
head. The orientation of the nut, rear ferrule,
and front ferrule should be as shown in Fig. 1.
D. If a file is used on the OD, make a 10° x
0.06 in. (1.5 mm) chamfer (as shown below).
C. For the 16FK MHSU, use the chamfer block
provided. Insert the cut end of the tubing
into the chamfer block, and while firmly
holding the tubing, strike the chamfer block
with a hammer to coin the end (as shown
below).
Front ferrule
Back ferrule
Nut Die head
Arbor
Arbor
Operation
1. Open the pump bypass valve by turning the
handle counterclockwise at least one-half to one
turn. It may be necessary to first close the valve
completely by turning the handle clockwise until
it stops. (If the bypass valve is in the full open
position upon receipt of the MHSU unit, it will
not be possible to open it an additional one-half
to one turn.)
2. Prepare tube ends by deburring or using the
Swagelok chamfer block as follows.
Note: Use the chamfer block when preparing up
to and including 1-inch tubing.
A. Cut tubing squarely. Use of a Swagelok tube
saw guide is recommended.
B. Remove any burrs. Use of a Swagelok tube
deburring tool is recommended.
WARNING
Deburr the OD of the tube to ensure
that it properly rests against the piston
shoulder. If the tube is not resting against
the piston shoulder, it could result in
inadequate preswaging, which, in turn,
could lead to premature tube failure and
result in loss of life, injury, or property
damage. One of the causes of the tube
not seating properly could be because it
hasn’t been properly deburred.
4. Insert the tubing into the die head until it rests
firmly against the piston shoulder. Tighten the
nut until finger-tight.
5. Push the indicator knob forward until it snaps
into place. The knob shoulder should be flush
with the hydraulic housing. See Fig. 2.
Knob shoulder is
flush with housing.
Indicator knob
Housing Tubing
Tubing
10°
0.06 in. (1.5 mm)
Strike end with
a hammer to
coin tube end
Tubing
Chamfer block

4
CAUTION
Use the Swagelok 16FK gap inspection gauge
to ensure the fitting has been sufficiently
tightened or system leakage could result.
Body
Nut
7. While holding the tubing against the piston
shoulder, increase the hydraulic pressure by
using the hand pump until the indicator knob is
released.
NOTICE
Do not continue pumping the hand pump after
the indicator knob releases. Failure to stop
pumping after the indicator knob releases may
affect fitting performance.
8. Open the pump bypass valve by turning the
handle one-half to one turn counterclockwise.
9. Unthread the Swagelok medium-pressure nut
and remove the preswaged assembly from the
housing. Fig. 4 Installing Preswaged Assembly into Fitting Body
Preswaged
assembly
12. Place a mark on the fitting body, inline with one
of the hex points of the nut. Hold the fitting body
steady and tighten the nut one-third turn or two
hex points from the scribed mark. See Fig. 5.
Alternatively, hold the fitting body steady and
tighten the nut to the specified torque.
Fig. 5 Tighten Nut with Wrench
Nut
Mark
Body
Bottoming marks
Tube face
Fig. 3 Tube Bottoming Mark
10. Inspect the tube end for bottoming marks.
These radial indentations indicate the tubing
was properly bottomed in the MHSU. If there
are not four visible indentations, the preswaged
assembly should not be used. See Fig. 3.
Note: Depending upon the tube end squareness,
the marks may be intermittent.
Note: The MHSU should be used one time
only to preswage a set of ferrules. If the
ferrules were insufficiently preswaged,
they should be discarded and the process
started again with a new set of ferrules.
11. Install the preswaged assembly into the fitting
body. Turn the nut onto the fitting body until it is
finger-tight. See Fig. 4.
Tube
OD
Required Torque
ft·lb N·m
1 in. 350 475

5
Fig. 7 Body Die Removal / Installation
Gauge will not enter Gauge will enter
Fig. 6 Using the MHSU Gap Inspection Gauge
Step 5 Step 6
Step 2 Step 1
Lock
ring
Die
head
Hydraulic
Housing
3. Select the replacement die head suitable for the
16FK MHSU.
4. Check the die head piston for movement by
depressing the piston before inserting the die
head into the hydraulic housing.
5. Install the selected die head into the hydraulic
housing, and align the two notches on the die
head with the two locating pins on the hydraulic
housing. See Fig. 8.
Gauging Instructions
Position the Swagelok 16FK gap inspection gauge
adjacent to the gap between the nut and body hex.
See Fig. 6.
■
If the gauge will not enter the gap, the fitting is
sufficiently tightened.
■If the gauge will enter the gap, additional
tightening is required.
Die Head Replacement
1. Unthread and remove the threaded lock ring
from the hydraulic housing.
2. Remove the previously installed die head from
the hydraulic housing. See Fig. 7.
6. Reinstall the threaded lock ring into the
hydraulic housing.
Note: Visually verify that the threaded lock ring
is threaded until it is bottomed out against
the face of the hydraulic housing.
See Fig. 9.
Locating pin
Notch
Notch
Locating pin
Fig. 8 Die Head Alignment
Fig. 9
Hydraulic housing
Bottomed

Warranty Information
Swagelok products are backed by The
Swagelok Limited Lifetime Warranty. For a
copy, visit swagelok.com or contact your
authorized Swagelok representative.
Swagelok—TM Swagelok Company
© 2018 Swagelok Company
Printed in U.S.A
October 2018, Rev-
MS-CRD-0250
Translations available on www.swagelok.com
Troubleshooting
Symptom Cause Remedy
Tubing is difficult to remove from the
MHSU.
There has been normal tube
expansion.
Rock the tubing gently back and forth.
CAUTION
Do not rotate the tubing, or
system leakage may result.
Tube wall thickness may be below the
recommended level.
Refer to the tubing listed in the
Medium- and High-Pressure Fittings,
Tubing, Valves, and Accessories
catalog, MS-02-472, for FK fittings.
The indicator knob fails to release. Oil may need to be added. Place the unit on a horizontal surface.
Check the oil level, and fill to the
lowest thread if necessary. Use 10W,
AW-46 grade hydraulic oil or equivalent
with an antifoaming additive.
If the oil reservoir is full and symptom
persists, return the unit to your
authorized Swagelok representative.
The die head piston does not return
fully after swaging.
The die head piston may be damaged. Return the unit to your authorized
Swagelok representative.
The pump is failing to build pressure. The oil level is incorrect.
Too much or too little oil prevents the
pump from working properly.
Add or remove oil as necessary with
the unit on a horizontal surface. Use
10W, AW-46 grade hydraulic oil or
equivalent with an antifoaming additive.
There is oil around the pump. There has been normal wear to the
pump components.
A small amount of leakage is
acceptable. If oil is continuously
dripping or there is a puddle, return
the unit to your authorized Swagelok
representative.
Proper Oil Level
Oil level
up to
lowest
thread