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11
Type 1190
WARNING
5. Remove the diaphragm case cap screws (key 16)
and lift off the spring case (key 2). Remove the
upper spring seat (key 9) and regulator spring
(key 11). Remove the lower spring seat (key 8).
6. Remove the diaphragm (key 12) and examine for
damage. Replace if damaged.
7. With diaphragm (key 12) removed, check to be
sure the pressure registration hole is completely
open and free of all obstructions.
8. Reassemble in reverse order of the previous steps.
Lubricate the upper spring seat (key 9) and the
exposed threads of the adjusting screw (key 15).
Before tightening cap screws (key 16) be sure to
install the adjusting screw, if completely removed,
and turn it down to obtain diaphragm slack. This
allows proper positioning of the diaphragm (key 12)
to permit full travel of the valve plug (key 4).
Complete reassembly procedures and temporarily
install a gauge in place of the pipe plug (key 52,
Figure 10). Turn the adjusting screw to produce the
desired outlet pressure values shown in Table 4.
Tighten the lock nut (key 17) to maintain the desired
setting. After reassembly, remove the gauge and
replace the pipe plug.
Type 1098 Actuator and Mounting Parts
Perform this procedure if changing, inspecting or
replacing the actuator and/or pilot mounting parts.
Key numbers are referenced in Figures 7 and 10.
To avoid personal injury resulting
from sudden release of pressure,
isolate the regulator from all pressure
and cautiously release trapped
pressure from the unit before
attempting disassembly.
1. The actuator and pilot may be removed and
replaced as a unit by disconnecting the control line.
2. Access to all internal parts except the stem O-rings
(key 6), bearings (key 56) and wiper ring (key 57)
may be gained without removing the bonnet
(key 3) or upper diaphragm case (key 2) from the
main valve. Disconnect the loading tubing (key 24)
and the control line connection from the actuator.
3. Remove the cap screws (key 10), hex nuts
(key 11), lower diaphragm case (key 1), diaphragm
(key 7) and diaphragm plate (key 8). To separate
the stem (key 12) from the diaphragm plate,
remove the stem cap screw (key 9).
4.
To remove the case O-ring (key 5),
unscrew
the four cap screws (key 4), remove the upper
diaphragm case (key 2) and remove the case O-ring.
To remove the stem O-rings (key 6), bearings
(key 56) and wiper ring (key 57),
remove the
loading and control lines. Unscrew the bonnet (key 3)
and remove the wiper ring, bearings and O-rings.
5. Lubricate both stem O-rings (key 6) and wiper
ring (key 57). Install them with the stem bearings
(key 56) in the bonnet (key 3). Lubricate the case
O-ring (key 5) and install it in the bonnet. Line up the
holes in the upper diaphragm casing (key 2) and the
bonnet; insert and tighten the four cap screws (key 4)
to 24 to 30 ft-lbs / 32 to 41 N•m of torque. Thread the
bonnet into the main valve body.
6. Secure the diaphragm plate (key 8) to the stem
(key 12) with the stem cap screw (key 9). Lay the
entire diaphragm (key 7), diaphragm plate and
stem assembly into the lower diaphragm case
(key 2) so the diaphragm convolution laps up over
the diaphragm plate according to Figure 7. Then
install the stem slowly up into the bonnet (key 3) to
prevent stem or O-ring damage, and secure the lower
diaphragm case to the upper diaphragm case (key 1)
with the cap screws (key 10) and nuts (key 11).
Tighten the cap screws and nuts to 24 to 30 ft-lbs /
32 to 41 N•m of torque. Tighten evenly in a crisscross
pattern to avoid crushing the diaphragm.
7. Grease the stem O-rings (key 6) through the
grease fitting (key 28) until excess grease starts
coming out the vent assembly (key 27).
8. Install the loading and control line tubing if removed.
Parts Ordering
Each Type 1190 gas blanketing regulator has a serial
number stamped on the nameplate. Refer to this
number when contacting your local Sales Office or
when ordering parts.
When ordering a replacement part, be sure to
reference the key number of each needed part and the
complete 11-character part number.
