Flowserve V-377 R4 Edward Valves - Manual (Page 17)

17
Flow Control Division
Edward Valves
Field Repair Equipment
Available from the Edward Manufacturing
plant in Raleigh, N.C., are some basic
tools for repairing valves in the field. This
equipment was developed for customer use
on a rental basis. Of course, an emphasis
has been placed on large valve repairs
where economics justify extensive repairs
in the field rather than removing the valve
from the pipe line for return to the factory.
Contact your local Edward Valves sales
representative for more information. A list
of this equipment follows:
1. Lapping equipment for all pressure-
seal valves from 2-1/2 to 18” in all
pressure classes. See Figs. A, B and
Illustration No. 7 on this page.
2. Self-centering, lap-guide fixtures for
lapping valve seats in valves 8” and
up in all pressure classes. See Figs.
C, D on this page. This fixture can be
used when the valve is installed in
any position, and is suggested in
place of (1) above, when the stem is
horizontal or mounted down.
3. Sunnen Portable Hone for honing
pressure-seal bores from 4” to
14-1/2“ diameter. (Not illustrated)
4. Van Norman portable boring
machine for reboring valves in the
field. Grinding attachments are also
available to some sizes for grinding
seat joints. See Illustrations No. 8
and No. 9 on this page.
5. Air-driven portable boring machine
for reboring guide ribs and seats of
valve bodies in the line. (Not
illustrated)
SPRING
GUIDE PLATE GUIDE PLATE
FRICTION CLAMP FRICTION CLAMP
SPRING
SPRING
SOFT STEEL
BUSHING
SOFT STEEL
BUSHING
YOKE LOCK
RING
STEEL PILOT
PLATE
STEEL PILOT
PLATE
DISK DRIVER FOR
LAPPING LARGE VALVES
DISK DRIVER FOR
LAPPING SMALL VALVES
SEAT AND DISK LAPPING
FIXTURE FOR VALVES
MOUNTED WITH STEM
DOWN OR HORIZONTAL
(SHOWING VALVE WITH YOKE
LOCK RING CONNECTION
TO BODY) SEAT AND DISK LAPPING
FIXTURE FOR VALVES
MOUNTED WITH STEM
DOWN OR HORIZONTAL
(SHOWING VALVE WITH
STUDDED YOKE CONNECTION
TO BODY)
Fig. A
Fig. C
Fig. D
Fig. B
Illustration No. 7
Portable Lapping Tool
for Large Valves
Illustration No. 8
Van Norman
Portable
Grinding Machine
Illustration No. 9
Van Norman
Portable
Boring Machine