W3012-1
!
WARNING
6
Type 1190
A regulator may vent some gas to
the atmosphere. In hazardous or
flammable gas service, vented gas
may accumulate and cause personal
injury, death or property damage due
to fire or explosion. Vent a regulator
in hazardous gas service to a remote,
safe location away from air intakes or
any hazardous location. The vent line
or stack opening must be protected
against condensation or clogging.
4. Install the Type 1190 gas blanketing regulator
as shown in Figure 1 so that flow through the
Type 1098-EGR main valve actuator matches the
flow arrow attached to the valve body.
5. To keep the pilot and supply spring case vent
assembly from plugging or the spring case from
collecting moisture, corrosive chemicals or other
foreign material, point the vent down or otherwise
protect it.
6. For proper operation, install the Type T205P pilot
with the spring case barrel pointed down as shown
in Figure 1.
7. To remotely vent a Type T205P, remove the vent
assembly (key 26, Figure 8) and install tubing or
piping into the 1/4 NPT vent tapping. Vent tubing
or piping should be as short and direct as possible
with a minimum number of bends and elbows. The
remote vent line should have the largest practical
diameter. Provide protection on a remote vent by
installing a screened vent cap into the end of the
vent pipe.
8. Attach a 3/4 NPT downstream pressure control
line to the tank using a straight run of pipe. Connect
the other end of the control line to the Type 1098
actuator bonnet connection (see Figure 2).
Prestartup Considerations
Before beginning the startup procedure in this section,
make sure the following conditions are in effect:
• Block valves isolate the regulator
• Hand valves are closed
• Gauges may be installed (if required) in place of
pipe plugs (key 52, Figure 10)
Slowly open the upstream block valve introducing
pressure into the Type 1190 gas blanketing regulator.
Slowly open the downstream block valve. The
regulator will immediately begin to operate. Monitor the
blanket pressure to ensure correct operation.
Note
The Type 1190 regulator was preset at
the factory at the customer’s specified
pressure or the mid-range of the
Type T205P pilot. The outlet pressure
range of the Type T205P pilot is stamped
on the spring case nameplate. For
proper operation, the Type MR95H is
factory set to the values in Table 4.
The only adjustment necessary
on a Type 1190
regulator is the pilot control spring pressure setpoint.
Turning the adjusting screw of the Type T205P pilot
clockwise into the spring case increases the spring
compression and pressure setting. Turning the
adjusting screw counterclockwise decreases the
spring compression and pressure setting.
Shutdown
Installation arrangements vary, but in any installation
it is important to open and close valves slowly and
to close the upstream block valve first when shutting
down the system.
Figure 3.
Trim Package Removal
CAGE SCREWS INTO
BODY FLANGE
BODY FLANGE
SEAT RING SCREWS
INTO CAGE
