Flowserve McCANNA McCannaflo Ball Valve - Manual (Page 2)

C. Unscrew the valve by using a wrench on the adaptor (15) that is
still in the pipe line.
D. Hold valve in a vise by one adaptor (15) and unscrew the other
adaptor (15). Considerable force may be required. It does not matter
which adaptor (15) comes loose, as the adaptors are identical.
E. Turn the handle (1) to the closed position. The ball (8) may now be
rolled out of the body (11).
F. Clean and inspect the ball (11) and the other valve parts. If the ball
(8) is scratched or gouged it must be replaced.
G. Pry the seats (9) out of the adaptors (15) and discard.
H. If the stem seals (10) leaked in service they must be replaced.
Remove the handle retainer nut (4), handle (1), adjusting nut (14),
Belleville washer (7), travel stop (5) and gland ring (6). Depending
on the valve size, age and handle type, the valve may have only the
handle retainer nut (4), handle (1) and gland ring (6).
I. Push the stem (2) down through the body (11) and out one end.
Remove upper and lower stem seals (10) and grounding washer
(13). Save the grounding washer.
4. Reassembly
NOTE: The valve may be assembled and operated dry, though
lubrication will aid in assembly and reduce initial operating torque.
Any lubricant used must be compatible with the line fluid. With this
in mind, light lubrication of parts may be read into each assembly
step as desired.
A. Press the lower stem seal (10) into the counterbore. The raised
outer edge should face into the counterbore. Insert stem (2)
through the body (11). Press grounding washer (13) into upper
counterbore with fingers up. Press upper stem seal (10) into
counterbore with the raised outer edge pointing into the valve. Tap
down with gland ring (6).
B. Add other handle and travel stop parts in the reverse order of
disassembly. Do not add handle retainer nut (4) or adjusting nut
(14). Turn handle (1) to assure that the handle (1) will be lined up
exactly with the pipeline by a counterclockwise rotation. If this is not
possible, T-handle (1) on 1/4" to 3/4" valve must be turned end for
end or travel stop (5) turned end for end. When proper cycle is
established, adjusting nut (14) may be installed. Tighten to torque
values shown in figure 2. Cycle handle (1) several times and recheck
adjusting nut torque. Attach handle (1) permanently and tighten
handle retainer nut (4). Where only one nut is used, attach handle (I)
and adjust stem seals (10) by tightening handle retainer nut (4).
C. Press seats (9) into the recess of the adaptors (15) with the flat
side against the adaptor (15) and the spherical bevel facing into the
valve body cavity.
D. Discard the old adaptor gasket (12) if the adaptor (15) has been
removed or loosened. Slip on a new gasket (12) and use care to
prevent twisting or cutting. If both adaptors (15) have been
removed, thread one adaptor (15) in finger tight. If adhesive is
used, first check for compatibility with line fluid. Do not use TFE
tape in the adaptor/body joints.
E. Turn handle (1) perpendicular to valve. Insert ball (8) into body (11)
in closed position so that ball slot lines up with stem (2) tang.
F. Thread second adaptor (15) into body (11) with the ball (8) in place
in full open or full closed position. Using wrench and vise or two
wrenches on adaptor flats only, tighten adaptors (15) until a tight
metal to metal fit is achieved with the body ends. Make sure that
adaptor gaskets (12) are not pinched during tightening. They
should be completely contained within the slightly beveled body
opening. Cycle valve several times before installing in the line.
G. It may be necessary to adjust stem seal tightness as the stem
seals (10) relax to best fit position underline conditions. Follow
procedures in the stem seal adjustment section of this bulletin.
Flow Control Division
McCANNA/MARPAC Valves
Flowserve is anxious to avoid injuries and property damage which could result from misapplication of the product. Proper valve selection is imperative. Examples of misapplication or misuse of
the valve include but are not limited to: use in a service in which the pressure/temperature rating is exceeded or in a chemical service incompatible with the valve materials; failure to use
caution in operating valves in high temperature; high pressure or highly hazardous services; failure to maintain valves as recommended.
Stem Nut Torque
Valve Size Torque (in-lb)
1/4" – 3/8" 30
1/2" – 3/4" 60
1" – 2" 120
Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function
safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial
service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specific data and warnings for all possible applications. The purchaser/user must therefore
assume the ultimate responsibility for the proper sizing and selection, installation, operation, and maintenance of Flowserve products. The purchaser/user should read and understand the Installation
Operation Maintenance (IOM) instructions included with the product, and train its employees and contractors in the safe use of Flowserve products in connection with the specific application.
While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not be considered certified or as a guarantee of
satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding any matter with respect to this product. Because Flowserve
is continually improving and upgrading its product design, the specifications, dimensions and information contained herein are subject to change without notice. Should any question arise concerning
these provisions, the purchaser/user should contact Flowserve Corporation at any one of its worldwide operations or offices.
For more information about Flowserve Corporation, contact www.flowserve.com or call USA 1-800-225-6989.
FLOWSERVE CORPORATION
FLOW CONTROL DIVISION
1978 Foreman Drive
Cookeville, Tennessee 38501 USA
Phone: 931 432 4021
Facsimile: 931 432 3105
www.flowserve.com
© 2003 Flowserve Corporation, Irving, Texas, USA. Flowserve and Worcester Controls are registered trademarks of Flowserve Corporation. IM V-576B 5/03 Printed in USA
FIGURE 2
Note: The right is reserved to change or modify product or construction without prior notice and without incurring any obligation to make such changes and modification on products
previously or subsequently sold.