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CROSBY SERIES HE ISOFLEX
INSTALLATION, MAINTENANCE AND ADJUSTMENT INSTRUCTIONS
Tighten the adjusting bolt a few flats and check
the guide and nozzle rings to be sure they are
free. The adjusting bolt may now be tightened to
achieve desired set pressure.
Tighten the adjusting bolt until the distance is the
same as that recorded in step 1,' Disassembly
(without retaining spring compression)' before
the valve was dismantled.
Unless considerable lapping or machining has
been done, the set pressure should be almost
the same as before reconditioning.
Regardless, the set pressure of the valve should
be re-established using the methods described
in section 'Set pressure testing and adjustment'.
Having recorded the ring positions at
disassembly, return rings to recorded location.
Touch nozzle/guide ring with disc holder and
turn down (left)(minus) to recorded position at
disassembly. Lock set screws in place making
sure that set rings are engaged in a notch.
Replace the spindle nut (15), spindle nut cotter
cap (28) and lifting gear assembly.
10 SPARE PARTS
Emerson recommends spare parts as shown
on the outline drawing, Figure 1.
When ordering spare parts the valve assembly
number should be given together with part
number, valve size and style. On the valve
nameplate (location of name shown in
Figures 1 and 2), the valve assembly number is
shown as a 'Shop number'. Any Emerson sales
office or representative can expedite your spare
parts requirements.
SELF-ACTUATED SAFETY VALVES
®
11 FIELD SERVICE RECOMMENDATIONS
Emerson operates an extensive field service
organization capable of adjusting, setting, and
maintaining Crosby valves worldwide. Service
technicians are located throughout the world
for fast response to our customers' needs.
Service technicians are factory-trained and
are experienced in servicing safety valves. It is
strongly recommended that on new installations,
a Emerson service technician be present for
assembly and testing of safety valves.
Service equipment available
All service equipment mentioned in this
instruction is available for purchase or rental.
Any Emerson sales office, representative or
service manager can expedite your service
equipment requirements.
NOTES
[1]
Manufactured by Bostik Corporation
[2]
Manufactured by Dow Corning Corporation
[3]
Manufactured by the Hyprez Division,
Engis Corporation
[4]
Manufactured by Kimberly Clark Corporation
15
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