Parts Ordering
When corresponding with your local Sales Office
about this regulator, include the type number and all
other pertinent information stamped on the nameplate.
Specify the 11-character part number when ordering
new parts from the following parts list.
7. Reassemble the diaphragm parts as follows:
• Pusher post (key 8)
• Diaphragm head gasket (key 45)
• Diaphragm head (key 7)
• Diaphragm (key 10)
• Diaphragm head
• Lower spring seat (key 50)
• Washer (key 36)
Secure the parts with diaphragm plate cap screw
(key 38) using 60 to 72 in-lbs / 6.8 to 8.1 N•m
of torque.
8. Install the pusher post (key 8) and attached
diaphragm parts onto the lever assembly (key 16).
9. Install the spring case (key 3) on the lower casing
(key 4) so that the vent assembly (key 26) is
correctly oriented and secure them with the cap
screws (key 24) and hex nuts (key 23) to finger
tightness only.
10. Install the parts into the spring case (key 3).
Follow the order below:
For internal flat circular adjusting screw
a. Control spring (key 6)
b. Adjusting screw (key 35)
For external square head adjusting screw
a. Control spring (key 6)
b. Upper spring seat (key 19)
c. Closing cap gasket (key 25)
d. Closing cap (key 22)
e. Locknut (key 20)
f. Adjusting screw (key 35)
11. Turn the adjusting screw (key 35) clockwise until
there is enough control spring (key 6) force to
provide proper slack to diaphragm (key 10). Using a
crisscross pattern, finish tightening the cap screws
(key 24) and hex nuts (key 23) to 98 to 126 in-lbs /
11.1 to 14.2 N•m of torque. Adjust the control
pressure to the desired pressure setting, refer to the
Adjustment section.
12. For Type T208M, connect the control line. Refer
to the Startup section before putting the regulator
back in operation.
To Convert Constructions
From Type T208 to Type T208M
A control line is needed. New parts required: keys 30,
31 and 34. Key numbers are referenced in Figures 4,
5 and 6.
1. Remove pipe plug (key 27) from the diaphragm
casing (key 4). Use this port to connect the control
line from upstream. See item number 5 in the
Installation section.
2. Refer to steps 1 through 3 in the Body Area
Maintenance section.
3. Insert the throat seal O-ring (key 31) and machine
screw (key 34).
4. Insert the stem seal O-ring (key 30) by following
steps 1 through 6 and 8 through 11 in the “To
Disassemble and Reassemble Diaphragm
Part” under Diaphragm and Spring Case Area
Maintenance section.
5. Reassemble following steps 7 through 10 of the
Body Area Maintenance section.
From Type T208M to Type T208
New part required: key 27. Key numbers are
referenced in Figures 4, 5 and 6.
1. Insert pipe plug (key 27) in the diaphragm casing
(key 4).
2. Follow steps 1 through 6 and 8 through 11 in the
“To Disassemble and Reassemble Diaphragm Part”
under Diaphragm and Spring Case Area Maintenance
section to remove the stem O-ring (key 30).
3. Follow steps 1 through 5 of Body Area
Maintenance to remove the throat seal O-ring
(key 31) and machine screw (key 34).
4. Reassemble following steps 7 through 10 of
Body Area Maintenance section.
8
T208 Series
