Emerson Penberthy 500 Series - Mounting; Stuffing Box; 6 Operation; Hydrostatic Test

5
PENBERTHY SERIES 500 AND 700 OS&Y ARMORED GAGECOCKS
InstallatIon, operatIon and maIntenance InstructIons
5.3 Mounting
1 Prior to installation, turn the handwheel
of each gagecock clockwise until the stem
closes against the seat.
2. Mount upper and lower gagecocks to the
vessel using PTFE tape, or equivalent, on
all male tapered pipe thread connections
as shown in Figure 1. If the gagecock is
flanged or weld mount, use proper industry
standard procedures.
3. If installing with a flat glass gage, follow
all installation instructions for the specific
liquid level gage as there are many points to
consider on gage installation; among them,
piping strain, differential thermal expansion,
weight and bolt torque.
4. Install gage tailpipes to union gage
connections, where applicable, making
surethat coupling nuts are in place.
5.4 Stuffing box
1. Install tubular packing nut, tubular packing
gland and tubular packing to each end of the
gage connection.
2 Turn the upper gagecock counterclockwise
approximately ⅛ turn.
3. Insert the end connection of the gage into
the upper gagecock stuffing box connection
as far as it will go.
4. Tighten the upper gagecock to the original
position while holding the gage in position
with upward force to insure it clears the
lower stuffing box location.
Check vertical alignment of the gagecocks.
5. Slide the gage assembly down into the
lower gagecock stuffing box connection to
a positive stop. Tighten the upper and lower
gagecock tubular packing nuts.
6 OPERATION
Before initializing gagecock operation, check
that all installation procedures have been
completed. Use only qualified, experienced
personnel who are familiar with gagecock
equipment and thoroughly understand
the implications of the tables and all the
instructions. Check to determine that all
connections are pressure tight.
FIGURE 1
PTFE tape
Direction of wrap
7 MAINTENANCE
WARNING
Use only qualified, experienced personnel who are
familiar with gagecock equipment and thoroughly
understand the implications of the tables and
all the instructions. DO NOT proceed with any
maintenance unless the gagecock assembly has
been relieved of all pressure or vacuum, has been
allowed to reach ambient temperature and has
been drained or purged of all fluids. Failure to do
so can cause serious personal injury and property
damage.
The user must create maintenance schedules,
safety manuals and inspection details for each
gagecock. These will be based upon the users
own operating experience with their specific
application. Realistic maintenance schedules
can only be determined with full knowledge of
the services and application situations involved.
During system shutdown, the gagecocks should
be left open to permit the gage to lose pressure
and cool with the rest of the system. Failure
to leave the gagecock open during system
shutdown may trap high-pressure fluid in
thegage.
WARNING
Gagecock installations should be brought into
service slowly. Gagecocks should be opened
slightly and the gagecock assembly temperature
and pressure allowed to equalize slowly. If the
gagecocks are equipped with ball checks, the
gagecocks must be opened all the way after
the pressure and temperature have equalized
to permit operation of the automatic ball check
in the event of gage glass failure. Failure to
follow the recommended operating procedures
can result in severe personal injury or property
damage.
6.1 Hydrostatic test
Take all precautions necessary to handle the
possibility of leakage during the test.
Hydrostatic pressure test all installations to
100psig (690 kPa) and correct any leakage
before proceeding.