Note
The control line should be as large as
the tapped hole in the Type 92B.
b. The other end of the control line is connected to
the downstream system. Place the tapped hole
for this connection in a straight run of pipe 3 to
5 ft / 0.91 to 1.52 m from the control valve when
the valve body is the same size as the pipeline.
If the valve body is smaller than the pipeline and
requires swage nipples, place the tapped hole at
a distance from the swage connection equal to 10
times the pipe diameter.
c. Do not locate the control line tap in an elbow,
swage or other changes in configuration of the
pipeline where turbulence or abnormal velocities
may occur.
d. Do not locate the control line tap in a vessel (such
as a deaerator) located immediately downstream
of the control valve. Locate the tap in the pipeline
leading to the vessel.
e. Slope the control line away from the Type 92B so
that condensate can drain back into the pipeline.
f. Install a shutoff valve (not a needle valve) in the
control line.
g. Install a pressure gauge in the control line or near
the outlet of the Type 92B to aid in setting the
outlet pressure.
CAUTION
The maximum inlet and outlet pressures
for which this Type 92B has been
manufactured should not be exceeded.
These pressures are stamped on the
nameplates attached to the main valve
and pilot.
Startup and Adjustment
!
WARNING
Failure to remove accumulated
condensate may result in severe
condensation induced water hammer
which can result in personal injury
or death.
TYPE 6492HM SAFETY
OVERRIDE PILOT
TYPE 92B PILOT
TYPE 92B MAIN VALVE
TYPE 92B MAIN VALVE
TYPE 92B PILOT
TOP VIEW
TYPE 92B
MAIN VALVE
TYPE 6492HM SAFETY
OVERRIDE PILOT
TYPE 92B PILOT
TYPE 92B MAIN VALVE
TYPE 92B PILOT
SIDE VIEW
Figure 5.
Safety Override System Installation
7
Type 92B
