20
SEMPELL SERIES STE 4 CONTROL DEVICE FOR SAFETY VALVES
Operating instructiOns
9.3 Installation instructions A-Lok tube
fittings
A-Lok tube fittings are supplied completely
assembled.
General remarks
1. The end of the tube must be cut square;
any burrs may be removed without causing
undue chamfering of the tube end.
2. Insert the tube into the fitting. Ensure that
the tube is firmly butted home into the body
of the fitting. Finger tight the nut.
3. With the body firmly held, mark the nut in
the finger tightened position, and tighten the
nut 1¼ turns from the marked position. The
connection is then correctly completed.
4. For tube fittings up to
3
/
16“ and 4 mm OD,
only ¾ turn is necessary.
High pressure applications, high safety factor
systems
To allow for possible variations in tube
hardness when the application demands the
maximum pressure sealing capabilities of the
fitting, it is recommended that the nuts are
tightened until the tube cannot be rotated by
hand. From this point the nut should then be
tightened 1¼ turns.
Retightening and disassembly
With A-Lok tube fittings the connection can be
disconnected and re-tightened many times and
the same reliable, safe, leak-proof connection
obtained.
Simply insert the tube into the body and butt
home firmly.
Holding the body with a spanner, the nut is
tightened to the original position and then given
a slight extra effort to retain positive sealing.
Technical Information and Customer Service:
Sempell GmbH
Werner-von-Siemens-Straße
41352 Korschenbroich
Germany
Phone +49-2161-615-0
Fax +49-2161-64761
© 2017 Emerson. All rights reserved.
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