Emerson 92S Installation Guide
Installation Guide
English – October 2008
Type 92S
Introduction
This installation guide provides instructions for
installation, startup, and adjustment. To receive a
copy of the instruction manual, contact your local
Sales Ofce or view a copy at www.emersonprocess.
com/regulators. For further information refer to:
Type 92S Instruction Manual, form 5234, D100637X012.
P.E.D. Categories
This product may be used as a safety accessory
with pressure equipment in the following Pressure
Equipment Directive 97/23/EC categories. It may
also be used out-side of the Pressure Equipment
Directive using sound engineering practice (SEP)
per table below.
PRODUCT SIZE CATEGORIES FLUID TYPE
DN 25 (1-inch) SEP
DN 40, 50, 65, 80, 100, and 150 x 100
(1, 1-1/2, 2, 2-1/2, 3, 4, and 6 x 4-inch)
I, II
1
Specications
Main Valve Body Sizes and End Connection Styles
BODY SIZE,
DN (INCHES)
25, 40 and 50
(1, 1-1/2, and 2)
25, 40, 50, 65, 80, and 100
(1, 1-1/2, 2, 2-1/2, 3, and 4)
150 x 100
(1)
(6 x 4)
Maximum Inlet and Pilot Supply Pressure
END CONNECTION STYLE AND RATING
Cast Iron Body
NPT NPT
CL125 FF or
CL250 RF anged
Not Available
Steel or
Stainless Steel Body
CL150 RF, CL300 RF
anged, or CL600 RF,
or PN 10/25/40
CL300 RF, CL600
RF anged, or
PN16/25/40/64/100
(1)
Cast Iron Main Valve and Pilot: 17,2 bar
(250 psig) or body rating limit, whichever is lower
Steel or Stainless Steel Main Valve and Pilot:
20,7 bar (300 psig) orbody rating limit, whichever
is lower
(1)
Minimum and Maximum Differential Pressures
BODY SIZE,
DN (INCHES)
25, 40, 50
(1, 1-1/2, 2)
65, 80, 100, 150 X 200
(2-1/2, 3, 4, 6 X 4
(1)
DIFFERENTIAL
PRESSURE
1,03 bar (15 psi)
(1)
1,38 bar (20 psi)
)
MINIMUM
Maximum Inlet and Outlet Pressures
MAXIMUM
DIFFERENTIAL
PRESSURE
13,8 bar (200 psi) or body
rating limit,
whichever is lower
12,1 bar (175 psi) or body
rating limit,
whichever is lower
(2)
See Table 1
Proof Test Pressure
All Pressure Retaining Components
have been proof tested per
Directive 97/23/EC - Annex 1, Section 7.4
Outlet (Control) Pressure Ranges
PILOT TYPE OUTLET PRESSURE RANGES, bar (PSIG)
6492L
6492H
6492HT
0,14 to 0,41
0,34 to 1, 03
0,90 to 1,72
0,69 to 2,07
1,72 to 5,17
4,83 to 10,3
1,03 to 6,90
5,52 to 17,2
(2)
(2 to 6)
(5 to 15)
(13 to 25)
(10 to 30)
(25 to 75)
(70 to 150)
(15 to 100)
(80 to 250)
Maximum Allowable Loading Pressure for Pilot
with Tapped Spring Case
PILOT TYPE
6492L 1,72 (25)
6492H 10,3 (150)
6492HT 17,2 (250)
MAXIMUM ALLOWABLE LOADING PRESSURE,
Maximum Material Temperature Capabilities
(2)
bar (PSIG)
(2)
Cast Iron Construction: 208°C (406°F)
Steel Construction: 260°C (500°F)
High Temperature Optional Steel and
Stainless steel Construction: 343°C (650°F)
(1)
Table 1. Maximum Inlet and Outlet Pressures
MAXIMUM ALLOWABLE INLET PRESSURE,
PILOT TYPE
6492L 17,2 (250) 20,7 (300) 1,72 (25) 6,90 bar (100 psig) 6,90 bar (100 psig)
6492H 17,2 (250) 20,7 (300) 10,3 (150)
6492HT - - - - 20,7 (300) 17,2 (250) - - - -
1. The two-number designation indicates end connection size by trim size.
2. The pressure/temperature limits in this installation guide and any applicable standard or code limitation should not be exceeded.
Cast Iron
bar (PSIG)
(1)
Steel or
Stainless Steel
MAXIMUM OPERATING
OUTLET PRESSURE,
bar (PSIG)
MAXIMUM EMERGENCY OUTLET PRESSURE
Cast Iron Main Valve
and Pilot Body
17,2 bar (250 psig) or main
valve body rating limit,
whichever is lower
Stainless Steel or Steel
Main Valve and Pilot Body
20,7 bar (300 psig) or main
valve body rating limit,
whichever is lower
20,7 bar (300 psig) or main
valve body rating limit,
whichever is lower
www.emersonprocess.com/regulators
D100637XUS2
2
Type 92S
Installation
WARNING
!
Only qualied personnel should install
or service a regulator. Regulators
should be installed, operated, and
maintained in accordance with
international and applicable codes and
regulations, and Fisher® instructions.
If the regulator vents uid 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 uid 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
Specications section, or where
conditions exceed any ratings of the
adjacent piping or piping connections.
To avoid such injury or damage,
provide pressure-relieving or pressurelimiting 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
uid. 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 threaded NPT bodies, apply
pipe compound to the male pipe threads. For anged
bodies, use suitable line gaskets and approved piping
and bolting practices. Install the regulator in any
position desired, unless otherwise specied, but be
sure ow 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 trafc 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 Stud Bolt
4 Stud Nut
5 Cage
6 Valve Plug
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