17
IOM-WKM-BALL-370D5
DISTRIBUTED VALVES
TC9186
19. If valve has gear operator:
a. Replace adapter plate with stop collar over gland plate with anchor pin en-
gaged. Secure with capscrews (see torque table, Section VI). Replace stop collar
capscrews.
b. Replace adapter plate with keystop over gland plate with anchor pin engaged.
Secure with capscrews (see torque table, Section VI).
c. Replace washer and stop collar.
d. Replace key in valve stem, engaging keyway in stop collar.
D I S T R I B U T E D V A L V E S
Installation, Operation and Maintenance Manual
10
W-K-M 370D5
20. If valve has gear operator:
a.1.
Replace adapter plate with stop collar over gland
plate with anchor pin engaged. Secure with
capscrews. (see torque table, Part VI, Page 12).
Replace stop collar capscrews.
a.2.
Replace adapter plate with keystop over gland
plate with anchor pin engaged. Secure with
capscrews. (See torque table, Part VI, Page 12)
b.
Replace washer and stop collar.
c.
Replace key in valve stem, engaging keyway in
stop collar.
d.
Replace operator (observing the reference
marks on operator, adapter flange and body)
and secure to adapter plate with capscrews.
(See Part VI for torque, Page 12).
e.
Refer to operator mounting instructions for
adjustment of stops. (See Part V).
21. If valve is wrench operated:
a.
Replace stop plate and secure to gland plate with
capscrews. (See torque table, Part VI, Page 12).
b.
Replace washer and stop collar over stop plate.
Rotate so the lock pin holes line up and
replace lock pins and stop collar capscrews.
c.
Replace wrench if stem has square end.
Otherwise, replace key in stem, engaging
keyway in stop collar. Replace wrench.
E. TESTING FOR LEAKAGE
1.
Install pipe plug in drain valve port at bottom
of valve.
2.
Close valve fully. Install body vent plug (if required).
3.
Admit 50-100 psi air or nitrogen pressure into
body cavity through relief valve port. Lock off
body pressure.
4.
If body pressure falls steadily, apply soap solution
to ball/seat circumference closure, flange to body
interface and to vented assembly plug in gland
plate. Release pressure, disassembly and repair
area of leakage.
5.
Vent air pressure from body and install relief valve.
6.
Remove pipe plug from drain port and install
drain valve assembly, close drain valve.
PART V - ACCESSORY INSTALLATION
A. SY SCOTCH YOKE OPERATOR MOUNTING AND
SETTING STOPS
1.
Before mounting the operator on the valve,
grease the valve stem. Check the key to see that
it is the proper length and fits the key slot
without excessive play. Lower the operator over
the stem and bolt down to the valve adaptor
plate. Tighten bolts securely.
NOTE: If operator fits tight over the valve stem,
do not force down by taking up on the bolts.
This will lock up the ball and cause excessive
torque. Check for scratches or burrs and
polish to provide smooth sliding surfaces.
2.
The valve internal stop is designed to serve as an
indicator of the ball open and closed positions.
This stop permits slightly more than 90° travel in
order that the stops in the operator can be set to
serve as the ACTUAL stopping means. After the
operator has been properly installed on the valve,
the operator stops can be set as follows:
NOTE: ON NEWER VERSIONS OF THE 370D5
BALL VALVE, THE ADAPTER PLATE AND STOP
COLLAR ARE ONE-PIECE. (SEE FIG. A & B, PAGE
4.)
Off-stream (Valve remove from line)
a.
Back-off locknuts and stop screws on both
sides of the operator.
b.
Turn handwheel clockwise until ball is about
1/2 closed.
D I S T R I B U T E D V A L V E S
Installation, Operation and Maintenance Manual
10
W-K-M 370D5
20. If valve has gear operator:
a.1.
Replace adapter plate with stop collar over gland
plate with anchor pin engaged. Secure with
capscrews. (see torque table, Part VI, Page 12).
Replace stop collar capscrews.
a.2.
Replace adapter plate with keystop over gland
plate with anchor pin engaged. Secure with
capscrews. (See torque table, Part VI, Page 12)
b.
Replace washer and stop collar.
c.
Replace key in valve stem, engaging keyway in
stop collar.
d.
Replace operator (observing the reference
marks on operator, adapter flange and body)
and secure to adapter plate with capscrews.
(See Part VI for torque, Page 12).
e.
Refer to operator mounting instructions for
adjustment of stops. (See Part V).
21. If valve is wrench operated:
a.
Replace stop plate and secure to gland plate with
capscrews. (See torque table, Part VI, Page 12).
b.
Replace washer and stop collar over stop plate.
Rotate so the lock pin holes line up and
replace lock pins and stop collar capscrews.
c.
Replace wrench if stem has square end.
Otherwise, replace key in stem, engaging
keyway in stop collar. Replace wrench.
E. TESTING FOR LEAKAGE
1.
Install pipe plug in drain valve port at bottom
of valve.
2.
Close valve fully. Install body vent plug (if required).
3.
Admit 50-100 psi air or nitrogen pressure into
body cavity through relief valve port. Lock off
body pressure.
4.
If body pressure falls steadily, apply soap solution
to ball/seat circumference closure, flange to body
interface and to vented assembly plug in gland
plate. Release pressure, disassembly and repair
area of leakage.
5.
Vent air pressure from body and install relief valve.
6.
Remove pipe plug from drain port and install
drain valve assembly, close drain valve.
PART V - ACCESSORY INSTALLATION
A. SY SCOTCH YOKE OPERATOR MOUNTING AND
SETTING STOPS
1.
Before mounting the operator on the valve,
grease the valve stem. Check the key to see that
it is the proper length and fits the key slot
without excessive play. Lower the operator over
the stem and bolt down to the valve adaptor
plate. Tighten bolts securely.
NOTE: If operator fits tight over the valve stem,
do not force down by taking up on the bolts.
This will lock up the ball and cause excessive
torque. Check for scratches or burrs and
polish to provide smooth sliding surfaces.
2.
The valve internal stop is designed to serve as an
indicator of the ball open and closed positions.
This stop permits slightly more than 90° travel in
order that the stops in the operator can be set to
serve as the ACTUAL stopping means. After the
operator has been properly installed on the valve,
the operator stops can be set as follows:
NOTE: ON NEWER VERSIONS OF THE 370D5
BALL VALVE, THE ADAPTER PLATE AND STOP
COLLAR ARE ONE-PIECE. (SEE FIG. A & B, PAGE
4.)
Off-stream (Valve remove from line)
a.
Back-off locknuts and stop screws on both
sides of the operator.
b.
Turn handwheel clockwise until ball is about
1/2 closed.
