Flowserve 1878 Y-Pattern Globe Valves - Manual (Page 11)

9.0 MAINTENANCE INSTRUCTIONS (Continued)
9.2
REPLACEMENT OF PACKING (Refer to Figure 1 for reference part
numbers)
(1) Remove the two Gland Nuts (234) and raise Gland Flange (133)
allowing the Gland Studs (205) to be removed.
(2) Lift the Gland Flange (133) upward and away from the stuffing box
area.
(3) Use a packing hook or similar device to remove the old packing.
(4)
Install the Packing (110, 112) one ring at a time - carefully placing the
joint of each ring approximately 180
° from the preceding piece to
prevent a leakage path. It might be necessary to slightly flatten each
packing ring prior to installation to allow easy insertion within the
stuffing box. Do not use a pointed instrument to push the rings into
position. The Gland Flange (133) can be used for this purpose.
(5) Upon completely filling the stuffing box, lubricate the bolt threads,
replace the nuts and very carefully draw the packing to assure that
the gland flange is even and that the bore of the gland flange is
concentric with the upper stem. (If the Gland Flange (133) is drawn
unevenly, scoring the upper stem may result; or the gland might be
tilted which could cause binding.)
(6) After tightening the gland stud nuts to the above specified torque
values, stroke the stem and retighten the nuts as required.
(7) Check the packing periodically (6-month intervals), replacing it as
needed.
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