Emerson Process Management 99 User Manual
Instruction Manual
Form 589
April 2008
Type 99 Pressure Reducing Regulators
Introduction
Scope of the Manual
This manual describes and provides instructions and
parts lists for Type 99 pressure reducing regulators
complete with standard P590 Series integral lter.
However, complete instructions and parts listing for the
Type 1301F pilot supply regulator, and other Fisher®
equipment, such as monitoring pilots will be found in
separate instruction manuals.
Description
The Type 99 gas regulators provide a broad capacity
for controlled pressure ranges and capacities
in a wide variety of distribution, industrial, and
commercial applications.
Type 99
A Type 99 regulator has a Type 61L (low pressure),
Type 61H (high pressure), or a Type 61HP (extra
high pressure) pilot integrally mounted to the actuator
casing as shown in Figure 1. The Type 99 regulator
can handle up to 1000 psig (69,0 bar) inlet pressures
(the 1000 psig (69,0 bar) regulator requires a
Type 1301F pilot supply regulator and a Type H110 pop
relief valve). The pilot supply regulator reduces inlet
pressure to a usable 200 psig (13,8 bar) for the extra
high pressure pilot. This regulator comes standard with
O-ring seals on the guide bushing and valve carrier
(key 26, Figure 7) to keep main valve body outlet
pressure from interfering with outlet pressure in the
lower casing assembly (key 29, Figure 9).
Specications
WARNING
!
Since a pilot-operated regulator is
constructed of both a pilot and a main
valve, care should be used not to exceed
W2676
Figure 1. Type 99 Regulator with Type 61H (high pressure) Pilot
the maximum inlet pressure shown on
the nameplate of either unit. When inlet
pressure exceeds the pilot limitation, a
pilot supply reducing regulator and/or
relief valve will be required.
Specications and ratings for various Type 99
constructions are listed in the Specications section
on page 2. Some specications for a given regulator
as it originally comes from the factory are stamped
on nameplates located on the pilot and actuator
spring cases. A tag (key 159, Parts List) additionally
may be installed on the pilot to indicate a regulator
with O-ring stem seal. These regulators and their
installations should be checked for compliance with
applicable codes.
www.emersonprocess.com/regulators
D100260X012
Type 99
Specications
Body Size and End Connection Styles
2-inch (DN 50) body with NPT; CL125, CL150,
CL250, or CL300 anged; or SWE
Maximum Allowable Inlet Pressure
(1)
160 psig (11,0 bar): When using Type 61LD pilot
400 psig (27,6 bar): When using Types 61L/
61H pilots
600 psig (41,4 bar): Type 61HP pilot
Maximum Actuator Pressures
Operating: 100 psig (6,90 bar)
Emergency: 110 psig (7,58 bar)
Maximum Pilot Spring Case Pressure for
Pressure Loading
Types 61L, 61LD
(1, 2)
(3)
with special steel closing cap
Types 61H and 61HP: 100 psi (6,90 bar)
(5/8-inch (15,9 mm) orice maximum)
1000 psig (69,0 bar): Type 61HP pilot, along with
Type 1301F pilot supply regulator and Type H110
relief valve (1/2-inch (12,7 mm) orice only)
Outlet (Control) Pressure Ranges
See Table 1
Approximate Proportional Bands
See Table 2
Maximum Allowable Pressure Drop
(1)
See Table 3
Minimum Differential Pressure Required for
Full Stroke
See Table 3
Maximum Rated Travel
1/4-inch (6,35 mm)
Temperature Capabilities
With Nitrile (NBR) / Neoprene (CR):
-20° to 180°F (-29° to 82°C)
With Fluorocarbon (FKM):
0° to 300°F (-18° to 149°C)
1. The pressure/temperature limits in this Instruction manual and any applicable standard or code limitation should not be exceeded.
2. For stability or overpressure protection, a pilot supply regulator may be installed in the pilot supply tubing between the main valve and pilot.
3. Type 61LD construction has narrower proportional band than does the standard Type 61L pilot.
4. Type 61LE construction has broader proportional band than does the standard Type 61L pilot.
(1)
, and 61LE
(1)
(4)
: 50 psi (3,45 bar)
Table 1. Outlet Pressure Ranges
PILOT
TYPE
61L 400 (27,6)
61LD
61LE
61H 400 (27,6) 10 to 65 psig (0,69 to 4,48 bar) 0Y0664000A2 Green stripe 0.363 (0,92) 6 (15,2)
61HP 600 (41,4) 35 to 100 psig (2,41 to 6,90 bar) 1D387227022 Blue 0.200 (0,51) 1-11/16 (4,29)
1. Type 61LD construction has narrower proportional band than does the standard Type 61L Pilot.
2. Type 61LE construction has broader proportional band than does the standard Type 61L Pilot.
MAXIMUM PILOT
SUPPLY PRESSURE,
PSIG (bar)
(1)
(2)
160 (11,0)
400 (27,6)
OUTLET (CONTROL)
PRESSURE RANGES
2 to 4-inches w.c.
3 to 12-inches w.c.
0.25 to 2 psig
1 to 5 psig
2 to 10 psig
5 to 15 psig
10 to 20 psig
(5 to 10 mbar)
(7 to 30 mbar)
(0,02 to 0,14 bar)
(0,07 to 0,34 bar)
(0,14 to 0,69 bar)
(0,34 to 1,03 bar)
(0,69 to 1,38 bar)
Part Number Color Code
1B558527052
1C680627222
1B886327022
1J857827022
1B886427022
1J857927142
1B886527022
PILOT CONTROL SPRING
Wire Diameter,
Inches (cm)
Orange
Unpainted
Red
Yellow
Blue
Brown
Green
0.075
0.080
0.109
0.142
0.172
0.187
0.363
(0,19)
(0,20)
(0,28)
(0,36)
(0,44)
(0,47)
(0,92)
Free Length,
Inches (cm)
4-1/8
3-1/4
2-3/4
2-3/4
2-7/8
2-7/8
3-1/8
Table 2. Proportional Bands
PILOT TYPES
61LD
61L 1B886327022 Red 0.109 (0,28) 2-3/4 (7,00) 1 to 2-inches w.c. (2 to 5 mbar)
61LD 1B886327022 Red 0.109 (0,28) 2-3/4 (7,00) 0.25 to 1-inch w.c. (0,62 to 2 mbar)
61LE 1B886327022 Red 0.109 (0,28) 2-3/4 (7,00) 5 to 8-inches w.c. (12 to 20 mbar)
61L, 61LD, 61LE
61H 0Y0664000A2 Green stripe 0.363 (0,92) 6 (15,2) 0.1 to 0.3 psi (0,007 to 0,02 bar)
61HP 1D387227022 Blue 0.200 (0,51) 1-11/16 (4,29) 1 to 2 psi (0,069 to 0,14 bar)
Part Number Color Code
1B558527052
1C680627222
1B886527022
1J857927142
1B886427022
1J857827022
PILOT CONTROL SPRING
Wire Diameter,
Inches (cm)
Orange
Unpainted
Green
Brown
Blue
Yellow
0.075 (0,19)
0.080 (0,20)
0.207 (0,53)
0.187 (0,47)
0.172 (0,44)
0.142 (0,36)
Free Length,
Inches (cm)
4-1/8 (10,5)
3-1/4 (8,26)
3-1/8 (7,94)
2-7/8 (7,30)
2-7/8 (7,30)
2-3/4 (7,00)
PROPORTIONAL BANDS
0.1 to 0.5-inch w.c. (0,25 to 1,0 mbar)
0.1 to 0.3 psi (0,007 to 0,02 bar)
(10,5)
(8,26)
(7,00)
(7,00)
(7,30)
(7,30)
(7,94)
2
Type 99
A6469
Type 99
Type 99
A6469
January 2008
Type 99
INLET PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
ATMOSPHERIC PRESSURE
A6814
Principle of Operation
The key to the operation of a Type 99 regulator is the
yoked double-diaphragm pilot (letter keys in this section
refer to both Figures 2 and 3 unless otherwise noted).
Fast response and accuracy are made possible by the
amplifying effect of the pressure-balanced pilot and
by the two-path control system. The function of the
pilot is to sense change in the controlled pressure and
amplify it into a larger change in the loading pressure.
Any changes in outlet pressure act quickly on both the
actuator diaphragm and the loading pilot, thus providing
the precise pressure control that is characteristic of a
two-path system.
INLET PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
ATMOSPHERIC PRESSURE
H
B
E
K
F
G
Figure 2. Schematic of Type 99 Regulator with Type 61L (Low Pressure) Pilot
C
A
D
OUTLET PIPE
INLET
In operation, assume the outlet pressure is less
than the setting of pilot control spring (A). The top
side of pilot diaphragm assembly (F) will have a
lower pressure than the setting of spring (A). Spring
(A) forces the diaphragm head assembly upward,
opening the relay or inlet orice (C). Additional loading
pressure is supplied to the pilot body and to the top
side of main diaphragm (E).
This creates a higher pressure on the top side of the
main diaphragm (E) than on the bottom side, forcing
the diaphragm downward. This motion is transmitted
through a lever, which pulls the valve disk open,
allowing more gas to ow through the valve.
A typical pilot has an approximate gain of 20, which
means the outlet pressure needs to droop only 1/20 as
much as a self-operated regulator in order to obtain the
same pressure differences across the main diaphragm.
Advantages of a pilot operated regulator are high
accuracy and high capacity.
Upstream or inlet pressure is utilized as the operating
medium, which is reduced through pilot operation to
load the main diaphragm chamber. Tubing connects
the inlet pressure to the pilot through a lter assembly.
Downstream or outlet pressure registers underneath the
main diaphragm (E) through the downstream control line.
When the gas demand in the downstream system
has been satised, the outlet pressure increases.
The increased pressure is transmitted through the
downstream control line and acts on top of the
pilot diaphragm head assembly (F). This pressure
exceeds the pilot spring setting and forces the head
assembly down, closing orice (C). The loading
pressure acting on the main diaphragm (E) bleeds to
the downstream system through a small slot between
the pilot bleed valve (D) and the bleed orice (H).
Normally, excess loading pressure slowly escapes
downstream around bleed valve (D) (Figure 3) or
3
Type 99
A2505
Type 99
Type 99
A6469
January 2008
Type 99
INLET PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
ATMOSPHERIC PRESSURE
DOWNSTREAM
CONTROL LINE
B
RELIEF
VALVE
CAP
through the relief valve body (J) (Figure 4). Since
loading pressure needs to exceed outlet pressure
only moderately to stroke the main valve fully open,
a continued increase in loading pressure differential
extends the main diaphragm (E) and the pusher
post assembly (K) far enough to separate the bleed
valve (D) and the bleed orice (H). This permits
quick dumping of excess loading pressure into the
downstream system.
With a decrease in loading pressure on top of the
main diaphragm (E), the main spring (B) exerts an
upward force on the diaphragm rod connected to the
main diaphragm (E), pulling it upward. This moves
the main valve toward its seat, decreasing ow to the
downstream system.
Diaphragm (G) in the pilot valve acts as a sealing
member for the loading chamber and as a balancing
member to diaphragm (F). These two diaphragms are
connected by a yoke so any pressure change in the
pilot chamber has little effect on the position of the pilot
valve. Therefore, the active diaphragm in the pilot is
(F) and the pressure on the top side of this diaphragm
opposes the force of the pilot control spring (A).
INLET PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
ATMOSPHERIC PRESSURE
54A2767-a
A2505
E
K
YOKE
LEG
FLANGE
ADAPTOR
G
Figure 3. Schematic of Type 99 Regulator with Type 61HP (Extra High Pressure) Pilot
INLET PRESSURE
TUBING CONNECTION
A
YOKE
CAP
YOKE
CAP
H
D
J
RELAY
VALVE
Monitoring Systems
Monitoring regulators serve as overpressure protection
devices to limit system pressure in the event of open
failure of a working regulator feeding the system. Two
methods of using Type 99 regulators in monitoring
systems are as follows:
Working Monitor
On a working monitor installation (Figure 4), the
control line of the monitoring pilot is connected
downstream of the working regulator. During
normal operation, distribution pressure causes
the monitoring pilot to stand wide open. Full pilot
supply pressure enters the working monitor pilot and
permits the working monitor regulator to control at its
intermediate pressure setting.
Open failure of the working regulator increases
distribution pressure as the working regulator goes
wide-open. Intermediate pressure is then ignored by
the monitoring regulator, which controls downstream
pressure at its own pressure setting (slightly higher
than the normal control pressure).
F
C
4
TYPE 161AYW MONITORING
PILOT (ALSO REPRESENTATIVE
OF TYPE 627-109)
PILOT SUPPLY LINE
WORKING
MONITOR PILOT
DISTRIBUTION PRESSURE
CONTROL LINE
INTERMEDIATE PRESSURE
CONTROL LINE
Type 99
LOADING
PRESSURE
OPTIONAL
PILOT SUPPLY
REGULATOR
UPSTREAM
PRESSURE
20A1389-A
B2484
Figure 4. Working Monitor Installation
The monitoring pilot should be upstream of the working
monitor regulator. This enables a closer setpoint
between the working regulator and the monitoring
pilot. Special Types 161AYW and 627-109 monitoring
pilots with quick-bleed operation have been designed
to give faster response to abnormal downstream
conditions. Table 4 gives the spread between normal
distribution pressure and the minimum pressure at
which the working monitor regulator can be set to take
over if the working regulator fails open.
INTERMEDIATE
PRESSURE
WORKING
MONITOR
REGULATOR
PILOT SUPPLY PIPING FOR WORKING REGULATOR
WHEN PILOT IS REQUIRED TO BE SUPPLIED FROM
UPSTREAM PRESSURE
UPSTREAM
REGULATOR
(REQUIRES O-RING
STEM SEAL)
10A1388-A
A2504
OPTIONAL PILOT
SUPPLY REGULATOR
FLEXIBLE ARRANGEMENT THAT PERMITS WIDE-OPEN
MONITOR TO BE EITHER UPSTREAM OR DOWNSTREAM
WORKING
REGULATOR
OPTIONAL
PILOT SUPPLY
REGULATOR
DISTRIBUTION
PRESSURE
Wide-Open Monitor
The control line of the upstream regulator is
connected downstream of the second regulator
(Figure 5), so that during normal operation the
monitoring regulator is standing wide open with the
reduction to distribution pressure being taken across
the working regulator. Only in case of open failure of
the working regulator does the wide-open monitoring
regulator take control at its slightly higher setting.
The upstream regulator must have an O-ring seal on
the valve carrier assembly. This seals off the leak
path that otherwise would let line pressure ahead of
the working regulator inlet try to close the wide-open
monitoring regulator.
UPSTREAM
REGULATOR
(REQUIRES O-RING
STEM SEAL)
10A1386-A
A2503
OPTIONAL PILOT
SUPPLY REGULATOR
FLEXIBLE ARRANGEMENT THAT PERMITS WIDE-OPEN
MONITOR TO BE EITHER UPSTREAM OR DOWNSTREAM
WORKING
REGULATOR
Figure 5. Typical Wide-Open Monitor Installations
5
Type 99
Table 3. Maximum Allowable Drop and Minimum Differential Pressures
MAXIMUM
ALLOWABLE
PRESSURE
DROP, PSIG (bar)
25 (1,72) 1C277127022 0.148 (0,38) 6 (15,2) 0.75 (0,05)
50 (3,45) 1N801927022 0.156 (0,40) 7-1/8 (18,1) 1.5 (0,10)
150 (10,3) 1B883327022 0.187 (0,47) 6-5/8 (16,8) 3 (0,21)
175 (12,1) 1B883327022 0.187 (0,47) 6-5/8 (16,8) 3 (0,21)
250 (17,2)
300 (20,7) 0W019127022 0.281 (0,71) 6 (15,2) 10 (0,69) Nylon (PA) 1-1/8 (28,6)
400 (27,6) 0W019127022 0.281 (0,71) 6 (15,2) 10 (0,69) Nylon (PA) 7/8 (22,2)
600 (41,4) 0W019127022 0.281 (0,71) 6 (15,2) 10 (0,69) Nylon (PA) 5/8 (15,9)
1000 (69,0) 0W019127022 0.281 (0,71) 6 (15,2) 10 (0,69) Nylon (PA) 1/2 (12,7)
1. Can use all port diameters up to maximum size listed.
2. CL125 FF anged body only.
3. O-ring seat only.
4. 1/2-inch (12,7 mm) is the only orice available for 1000 psig (69,0 bar) maximum inlet pressure regulator.
1B883327022 0.187 (0,47) 6-5/8 (16,8) 3 (0,21) Nitrile (NBR), Fluorocarbon (FKM) 7/8 (22,2)
0W019127022 0.281 (0,71) 6 (15,2) 10 (0,69) Nitrile (NBR)
Installation
MAIN VALVE SPRING MINIMUM
Part
Number
Wire Diameter,
Inches (cm)
Free Length,
Inches (cm)
DIFFERENTIAL
PRESSURE FOR FULL
STROKE, PSIG (bar)
Like most regulators, the Type 99 regulator has a outlet
SEAT MATERIAL
Nitrile (NBR), Neoprene (CR),
Fluorocarbon (FKM)
Nitrile (NBR), Neoprene (CR),
Fluorocarbon (FKM)
Nitrile (NBR), Neoprene (CR),
Fluorocarbon (FKM)
Nitrile (NBR)
(2)
, Neoprene (CR)
Fluorocarbon (FKM)
(3)
, Fluorocarbon (FKM)
(2)
(2)
,
(3)
MAXIMUM PORT
DIAMETER
INCHES (mm)
1-1/8 (28,6)
1-1/8 (28,6)
1-1/8 (28,6)
7/8 (22,2)
1-1/8 (28,6)
pressure rating lower than its inlet pressure rating.
WARNING
!
Complete downstream overpressure protection is
needed if the actual inlet pressure can exceed the
• Personal injury, equipment damage, or
leakage due to escaping gas or
bursting of pressure-containing
parts might result if this regulator
is overpressured or is installed where
service conditions could exceed
the limits for which the regulator was
designed, or where conditions exceed
any ratings of the adjacent piping or
piping connections. To avoid such
injury or damage, provide pressure-
regulator outlet pressure rating or the pressure ratings
of any downstream equipment. Although the Type H110
relief valve provides sufcient relief capacity to protect
the extra high pressure pilot of the 1000 psig (69,0 bar)
maximum inlet regulator in case the Type 1301F supply
regulator fails open, this protection is insufcient if the
main valve body fails open. Regulator operation within
ratings does not preclude the possibility of damage from
external sources or from debris in the lines. A regulator
should be inspected for damage periodically and after
any overpressure condition.
relieving or pressure-limiting devices
(as required by the appropriate code,
WARNING
regulation, or standard) to prevent
!
service conditions from exceeding
those limits.
• A regulator may vent some gas to the
atmosphere in hazardous or ammable
gas service, vented gas might
accumulate and cause personal injury,
death or property damage due to re 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.
The 1000 psig (69,0 bar) maximum
inlet regulator must not be used on
hazardous gas service unless the
Type H110 relief valve can be vented
into a safe area. If vented gas can
accumulate and become a hazard in
enclosed conditions such as in a pit,
underground, or indoors, the relief valve
must be repiped to carry the gas to a
safe location.
A repiped vent line or stack must be
located to avoid venting gas near
buildings, air intakes, or any hazardous
(1)
,
(4)
6
Loading...