Installation
!
WARNING
Only qualified personnel should install
or service a regulator. Regulators should
be installed, operated and maintained in
accordance with international and applicable
codes and regulations and Emerson Process
Management Regulator Technologies,
Inc. instructions.
If the regulator vents fluid or a leak develops
in the system, it indicates that service
is required. Failure to take the regulator
out of service immediately may create a
hazardous condition.
Personal injury, equipment damage or leakage
due to escaping fluid or bursting of pressure-
containing parts may result if this regulator
is overpressured or is installed where service
conditions could exceed the limits given in the
Specifications section, or where conditions
exceed any ratings of the adjacent piping or
piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting devices
(as required by the appropriate code, regulation
or standard) to prevent service conditions from
exceeding limits.
Additionally, physical damage to the regulator
could result in personal injury and property
damage due to escaping fluid. To avoid such
injury and damage, install the regulator in a
safe location.
Clean out all pipelines before installation of the regulator and
check to be sure the regulator has not been damaged or has
collected foreign material during shipping. For NPT bodies,
apply pipe compound to the external pipe threads. For flanged
bodies, use suitable line gaskets and approved piping and
bolting practices. Install the regulator in any position desired,
unless otherwise specified, but be sure flow through the body is
in the direction indicated by the arrow on the body.
Note
It is important that the regulator be installed
so that the vent hole in the spring case
is unobstructed at all times. For outdoor
installations, the regulator should be located
away from vehicular traffic and positioned
so that water, ice and other foreign materials
cannot enter the spring case through the
vent. Avoid placing the regulator beneath
eaves or downspouts, and be sure it is above
the probable snow level.
Overpressure Protection
The recommended pressure limitations are stamped on the
regulator nameplate. Some type of overpressure protection
is needed if the actual inlet pressure exceeds the maximum
operating outlet pressure rating. Overpressure protection
should also be provided if the regulator inlet pressure is greater
than the safe working pressure of the downstream equipment.
Regulator operation below the maximum pressure limitations
does not preclude the possibility of damage from external
sources or debris in the line. The regulator should be
inspected for damage after any overpressure condition.
Startup
The regulator is factory set at approximately the midpoint
of the spring range or the pressure requested, so an initial
adjustment may be required to give the desired results.
With proper installation completed and relief valves properly
adjusted, slowly open the upstream and downstream
shutoff valves.
Adjustment
To change the outlet pressure, remove the closing cap or
loosen the locknut and turn the adjusting screw clockwise
to increase outlet pressure or counterclockwise to decrease
pressure. Monitor the outlet pressure with a test gauge
during the adjustment. Replace the closing cap or tighten the
locknut to maintain the desired setting.
Taking Out of Service (Shutdown)
!
WARNING
To avoid personal injury resulting from
sudden release of pressure, isolate
the regulator from all pressure before
attempting disassembly.
Parts List
Type 92S Main Valve
Key Description
1 Body
2
Body Flange
3
Cap Screw (For Cast Iron Body)
3
Stud Bolt (For Steel Body)
4
Stud Nut
5 Cage
6
Valve Plug
Type 92S
2
