Flowserve E-Series Two-Piece - Manual (Page 2)

2 E-Series Two-Piece, Flanged-End Ball Valves MMAIM2004
NOTE: Valves are heavy. They should be adequately supported
before removal from the line is begun.
C. Remove studs and nuts (15) using proper wrench size (See
Table 1 for Regular-Port and Table 2 for Full-Port). Lift body end
(16). One seat (9) should come out with body end (16).
a WARNING: Valve must be properly secured to withstand the
high loads imposed during disassembly.
D. Remove Body Seal (12).
E. To take out the ball (8), rotate stem (2) so that ball (8) is in fully
closed position, and insert wooden dowel (not metal) in port
opposite threaded end. Tap gently on ball (8), thereby rocking it
out of engagement with the stem (2).
NOTE: Extreme caution should be taken to avoid damage to the
ball (8). Remove the ball (8).
F. Take out the other seat (9).
G. Remove the handle retainer nut (4), handle (1), adjusting nut
(14), travel stop (5) and the gland ring (6).
Push the stem (2) down through the body (11) and out the open
end of the body (11). Remove the upper and lower stem seals
(10) and the grounding washer (13). Grounding washer (13) is
not used with FIRE-GARD
® valves. Save the grounding washer
(13) for reassembly.
H. Flowserve strongly recommends replacement of all soft parts
whenever the valve is disassembled for reconditioning. This is the
surest protection against subsequent leakage after valve assem-
bly. The replacement parts can be ordered in kit form.
4. Reassembly
NOTE: Prior to reassembly, all metallic sealing faces must be carefully
cleaned and inspected for damage. A smooth, nick-free surface is
required for effective sealing.
A. Put one seat (9) in body (11).
NOTE: Seats (9) are to be installed with spherical surface posi-
tioned toward the ball.
B. Lightly grease the stem seals (10) and the seal area and threads
of the stem (2). Insert stem seal(s) (10) into the lower stem seal
cavity with the raised outer edge facing into the counter-bore.
(FIRE-GARD seals are square-cut seals.) Insert stem (2) through
the installed stem seals (10) and the body (11). Place the travel
stop (5) on the stem (2) so that it rests on the top surface of the
body (11). Thread the adjusting nut (14) on the stem (2) and
torque to
3 /
4
of the final torque value for the adjusting nut. Remove
the adjusting nut (14) and the travel stop (5) without moving the
stem (2). Place the grounding washer (13) (if used) into the
upper seal cavity with the raised fingers pointing up. Push the
upper stem seal(s) (10) into the counter-bore with the raised
outer edge pointing into the valve. Add the gland ring (6), the
travel stop (5) and the handle retainer nut (4). Make sure the trav-
el stop (5) is installed so that the valve can close in a clockwise
direction and open counterclockwise. If the rotation is not correct,
the travel stop (5) must be inverted. Torque the adjusting nut (14)
to the value shown in Table 3. Cycle several times and check the
adjusting nut torque.
C. Turn the stem (2) to a position with the lower stem tang flats par-
allel to the pipeline axis of the body. (Stem and ball should stay in
this position through steps D, E, and F).
D. Install the ball (8), being careful not to damage it. A sling through
the waterway can aid insertion. NOTE: Ball should be carefully
examined for nicks, scratches, pitting or corrosion, and replaced
as necessary.
E. Place the second seat (9) into body end (16) with spherical sur-
face of seat positioned against the ball (8).
F. Put body seal (12) into shoulder counter-bore at flange in valve
body (11).
G. Put body end (16) into body (11) and line up end flange. Because
the body flange bolt pattern is different from the line flange bolt
pattern, it is possible to assemble the valve such that the bolt
holes in the line flanges do not line up. Be certain to align end
flange bolt holes to straddle valve center lines.
NOTE: Be careful
not to damage the body seal when putting body end into body.
a WARNING: Valve must be properly secured to withstand the
high loads imposed during reassembly.
H. Install body end nuts (15) and tighten in a star pattern to the
torque specified in Table 1 (regular-port) or Table 2 (full-port).
a WARNING: Extreme care must be exercised during adjust-
ment of body end nuts (15) to make sure that complete
engagement of studs with body flange is maintained. There
should be at least one stud thread exposed on each side of the
completed joint.
I. Install handle (1), and handle retainer nut (4).
5. Testing
Prior to placing the valve back into line position, test as follows:
a WARNING: If not properly secured, the valve can separate from
the pressure source resulting in possible injury. Always join the
valve to companion flanges of same pressure rating as valve, and
secure with a full set of flange bolts.
A. Secure valve to a test fixture by means of a mating flange with full
bolting and a suitable gasket. Orient valve so seat to be tested is
facing up.
B. Introduce 50 to 100 psig air into the end of the closed valve which
is attached to the fixture. Pour water into the upper port to cover
the ball and visually check for bubbles. If bubbles appear, pour the
water out, cycle the valve several times and recheck. To check for
leakage in the other port, reverse the valve and repeat the process.
C. In the event of stem seal leakage, adjust as described under
Section 2, “Stem Seal Adjustment”.
Flow Control Division
McCANNA/MARPAC Valves