Instruction Manual
D102684X012
May 2017
299H Series
299H Series Pressure Reducing Regulators
WARNING
!
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fire causing property damage and
personal injury or death.
Fisher™ regulators must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies, Inc.
(Emerson) instructions.
If the regulator vents gas or a leak
develops in the system, service to the unit
may be required. Failure to correct trouble
could result in a hazardous condition.
Call a gas service person to service the
unit. Only a qualified person must install
or service the regulator.
Introduction
Scope of the Manual
This Instruction Manual provides installation,
adjustment and maintenance instructions and parts
ordering information for the 299H Series regulators.
Instructions and parts list for the 67C Series
Instrument Supply Regulators are found in Instruction
Manual D102601X012. Instructions and parts list
for the P590 Series Filters are found in Instruction
Manual D101555X012. Instructions and parts list for
the Type VSX2 slam-shut are found in Instruction
Manual D103695X012. Instructions and parts list for
the Type VSX8 slam-shut are found in Instruction
Manual D103127X012.
Description
The 299H Series pressure reducing regulators provide
a broad capacity of controlled pressure ranges and
capacities in a wide variety of distribution, industrial
and commercial applications. A 299H Series regulator
has a pilot integrally mounted to the actuator casing.
Figure 1. 299H Series Pressure Reducing Regulator
The 299H Series regulators can handle inlet pressures
up to 175 psi / 12.1 bar depending on orifice size.
The integral token relief on the Types 299HR and
299HSR regulators is located in the pilot and opens to
relieve minor overpressure.
The Types 299HS and 299HV provide overpressure
or overpressure and underpressure protection
by completely shutting off the ow of gas
to the downstream system. It comes with a
Type VSX2 (299HS) or VSX8 (299HV) slam-shut
device which can be congured for Ovepressure
Shutoff (OPSO) or Overpressure and Underpressure
Shutoff (OPSO/UPSO). The slam-shut device’s actions
are independent of the main valve and of variations
to the inlet pressure. The Type VSX2 (299HS) or
VSX8 (299HV) slam-shut device has internal or
external registration. External registration requires a
downstream sensing line.
299H Series
Specifications
Specifications for 299H Series constructions are given below. Some specifications for a given regulator as it
originally comes from the factory are stamped on a nameplate located on the actuator upper casing.
Available Constructions
Type 299H: Pilot-operated pressure reducing
regulator with a pilot integrally mounted to the
actuator casing.
Type 299HR: A Type 299H with a token internal
relief valve to relieve minor overpressure caused
by thermal expansion.
Type 299HS: Same as the Type 299H
with a Type VSX-2 slam-shut valve which
provides overpressure or overpressure and
underpressure protection.
Type 299HV: Same as the Type 299H
with a Type VSX8 slam-shut valve which
provides overpressure or overpressure and
underpressure protection.
Type 299HSR: Same as the Type 299HS with an
internal token relief valve.
Type 299HVR: Same as the Type 299HV with an
internal token relief valve.
Body Size and End Connection Styles
See Table 1
Maximum Operating Inlet Pressure by Orifice Size
(1)
1/4 x 3/8 in. / 6.4 x 9.5 mm .......175 psig / 12.1 bar
3/8 in. / 9.5 mm ................175 psig / 12.1 bar
1/2 in. / 13 mm ................175 psig / 12.1 bar
3/4 in. / 19 mm ................150 psig / 10.3 bar
7/8 in. / 22 mm
1 in. / 25 mm
1-3/16 in. / 30 mm
Maximum Casing and Emergency Outlet Pressure
(5)
...............125 psig / 8.6 bar
(5)
.................100 psig / 6.9 bar
(5)
........... 80 psig / 5.5 bar
(1)
66 psig / 4.5 bar
Outlet (Control) Pressure Ranges
(1)(2)
See Table 2
Maximum Set Pressure for Types 299HS and 299HV
16 psig / 1.1 bar
Maximum Set Pressure for Slam-Shut Device
See Table 2
Minimum and Maximum Trip Pressure Ranges
See Type VSX2 slam-shut Instruction Manual
D103695X012 or Type VSX8 slam-shut Instruction
Manual D103127X012.
Types VSX2 and VSX8 Sensing Line Connection
1/4 NPT
Pressure Control Accuracy (Fixed Factor)(PFM)
(3)
±1%
of absolute control pressure
Minimum Differential Pressure For Full Stroke
1.5 psid / 0.10 bar d
Control Line Connections
3/4 NPT
Temperature Capabilities
(1)(6)
-20 to 150°F / -29 to 66°C
Approximate Weight
21 lbs / 10 kg
Pressure Registration
Internal, External or Dual Registration
See Figure 2
Fixed Restriction Sizes
0.044 in. / 1.1 mm, Red (standard gain)
0.071 in. / 1.8 mm, Green (low gain)
0.082 in. / 2.1 mm, Blue (lower gain)
Options
• Filter
(3)
: A P590 Series filter installed in the pilot
supply tubing between main body and pilot
• Filtered pilot supply regulator
(3)(4)
: A Type 67CF
supply regulator with integral 5 micron
Polyethylene filter
(1)
(1)
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2. For optimum performance, a pilot supply regulator may be installed in the pilot supply tubing between the main valve and pilot.
3. A pilot supply regulator or a P590 Series lter (only one may be used, not both) may be ordered with the Type 299H, but not both.
4. For in. w.c., use a pilot supply regulator if actual inlet pressure varies more than ±20 psi / ±1.4 bar and published accuracy is required.
5. This orice size is not available for Types 299HS, 299HV, 299HSR and 299HVR.
6. Product has passed Emerson testing for lockup, relief start-to-discharge and reseal down to -40°.
2
299H Series
Table 1. Body Sizes and End Connection Styles
BODY SIZE,
IN. / DN
1-1/4
1-1/2
2 / 50 NPT and CL125
1. This ange is available with a face-to-face dimension of 7.5 in. / 190 mm or 10 in. / 254 mm.
OUTLET (CONTROL)
PRESSURE RANGE
In. w.c. mbar In. mm In. mm
(1)
3.5 to 6
(1)
5 to 9
(1)
7 to 20
(1)
16 to 40
1 to 3.25 psig
2.75 to 6 psig
5 to 16 psig
14 to 35 psig
30 to 60 psig
1. Use a pilot supply regulator if actual inlet pressure varies more than ±20 psi / ±1.4 bar and the published accuracy is required.
Cast Iron (For Types 299H and 299HR only) Ductile Iron Steel (For Types 299H and 299HR only)
NPT
NPT
FF(1)
flanged
TYPE PILOT CONTROL SPRING
299HR,
299HS,
299HSR,
299HV
299HVR
X
X
X
X
X
X
X
X
X
- - - -
- - - -
(1)
9 to 15
(1)
12 to 22
(1)
17 to 50
(1)
40 to 99
69 mbar to 0.22 bar
0.19 to 0.41 bar
0.34 to 1.1 bar
0.97 to 2.4 bar
2.1 to 4.1 bar
299H
BODY MATERIAL AND END CONNECTION STYLE
- - - NPT
NPT, CL125 FF and CL250 RF flanged
and PN 10/16 flanged
Table 2. Outlet Pressure Ranges
Part Number Color
and
X
X
X
X
X
X
X
T13707T0012
T13589T0012
1N3112X0012
1B413727222
T13593T0012
T13671T0012
T13600T0012
19B0432X012
19B0432X022
Black
Yellow
Unpainted
Purple
Light blue
Orange
Red
Zinc
Green
- - - NPT
NPT and CL150 RF flanged
Free Length Wire Diameter
1.86
2.05
2.18
2.12
2.12
2.40
2.10
2.15
2.75
47.2
52.1
55.4
53.8
53.8
61.0
53.3
54.6
69.8
0.055
0.051
0.075
0.092
0.105
0.120
0.142
0.207
0.225
1.40
1.30
1.90
2.34
2.67
3.05
3.61
5.26
5.71
Principle of Operation
WARNING
!
Since a pilot-operated regulator is
constructed of both a pilot and a main
valve, do not exceed the maximum inlet
pressure shown on the nameplate.
Letter keys in this section refer to Figure 2 unless
otherwise noted. Fast response and accuracy are
made possible by the amplifying effect of the 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 control system.
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. Downstream or outlet
pressure registers underneath the main diaphragm (E)
and on top of pilot diaphragm (F). There are three
different versions of pressure registration for the
299H Series.
Internal registration—Outlet pressure is registered
through the throat (J) to the main diaphragm chamber
and then through a small port (G) to the top of the
pilot diaphragm.
External registration—The throat (J) is blocked and a
downstream control line is connected to the pilot upper
diaphragm chamber or the actuator lower diaphragm
chamber. A small port (G) connects the two chambers.
Dual registration—The lower main diaphragm chamber
registers outlet pressure through the throat (J) and the
upper pilot diaphragm chamber registers downstream
pressure by using a downstream control line. The port (G)
between the chambers is blocked.
Type 299H
In operation, assume the outlet pressure is less than
the setting of the pilot control spring (A). The top side
of pilot diaphragm assembly (F) will have a lower
pressure than the setting of the control spring (A).
The control spring (A) forces the diaphragm assembly
upward, opening the pilot orifice (C). Additional loading
pressure is supplied from the pilot orifice to the top
side of the main diaphragm (E).
3
Type 299H
Type 299H with Dual Registration
November 2008
Type 299H Internal Registration
July 2008
Type 299H
OUTLET
INLET
K
G
C
A
B
E
H
F
J
3/4 NPT
CONTROL LINE
CONNECTION
PILOT SUPPLY
SCREEN
299H Series
J
B
OUTLET
3/4 NPT
INLET
E0070
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
CONTROL LINE
CONNECTION
K
G
F
INTERNAL
REGISTRATION
E
A
H
PILOT SUPPLY
SCREEN
C
TYPE 299H
J
3/4 NPT
DOWNSTREAM
CONTROL LINE
CONNECTION
3/4 NPT
DOWNSTREAM
CONTROL LINE
CONNECTION
EXTERNAL REGISTRATION
J
DUAL REGISTRATION
G
G
A7272
TOKEN RELIEF CLOSED TOKEN RELIEF OPEN
TYPE 299HR (TOKEN RELIEF DETAIL)
Figure 2. 299H Series Operational Schematics
A7272
4
Type 299HV
Type 299HV
EXTERNAL REGISTRATION
INTERNAL REGISTRATION
September 2016
Type 299HV
Type 299HV
September 2016
Type 299HV
Type 299HS
EXTERNAL REGISTRATION
INTERNAL REGISTRATION
299H Series
EXTERNAL REGISTRATION
E0072_09/2016
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 (K) open,
allowing inlet pressure to flow through the valve.
When the demand in the downstream system has been
satisfied, the outlet pressure increases. The increased
pressure is transmitted through the downstream control
line (for external or dual registration) or through the
port (G) (for internal registration) and acts on top of the
pilot diaphragm (F). This pressure exceeds the pilot
spring setting and forces the diaphragm down, closing
the orifice (C). The loading pressure acting on the
main diaphragm (E) bleeds to the downstream system
through a bleed restriction (H).
With a decrease in loading pressure on top of the
main diaphragm (E), the main closing spring (B)
exerts an upward force on the diaphragm post which
is connected to the main diaphragm (E), pulling it
upward. This moves the main valve disk (K) toward its
seat, decreasing flow to the downstream system.
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
TYPE 299HV
Figure 2. 299H Series Operational Schematics (continued)
Type 299HR
During normal operation the Type 299HR performance
is identical to the Type 299H. If an overpressure
condition occurs, the pilot diaphragm head will
separate from the pilot diaphragm post and travel until
it contacts the pilot spring case. The movement of the
diaphragm head creates a path and a token or small
amount of gas will be released.
When the overpressure condition ceases, the pilot
diaphragm head will return to the diaphragm post and
the regulator will return to normal operation.
Type 299HS or 299HV
The Type VSX2 (299HS) or VSX8 (299HV) slam-shut
device on the Type 299HS or 299HV regulator is a fast
acting slam-shut valve which provides overpressure or
overpressure and underpressure protection by completely
shutting off the flow of gas to the downstream system.
The slam-shut module’s actions are independent of
the Type 299HS or 299HV main regulator and of the
variations to the inlet pressure. The Types VSX2 and
VSX8 have internal or external registration. External
registration requires a downstream sensing line.
5
299H Series
The slam-shut disk is held in the open position (reset
position) by an internal latching mechanism that holds
the valve stem and disk assembly. If the pressure
below the diaphragm increases (or decreases)
reaching the Types VSX2 and VSX8 setpoint, the
diaphragm will travel upwards (or downwards)
operating a lever which in turn releases the valve
stem assembly.
Once released, the spring force on the stem will push
the stem and disk to the closed position against the seat
shutting off all gas flow. The pilot supply pressure is also
shut off when the Type VSX2 or VSX8 is closed. The
manual reset has an internal bypass to equalize the
reset pressure on either side on the slam-shut disk.
In order for the Underpressure Shutoff (UPSO) of
any slam shut to be triggered, the downstream pipe
pressure must drop below the UPSO setpoint. In the
case of a downstream line break, numerous factors
can prevent the downstream pipe pressure from
decreasing below the slam-shut UPSO setpoint. These
factors include the distance of pipe to the break, the
diameter of the pipe, size of the break and the number
of restrictions, such as valves, elbows and bends,
downstream of the regulator and/or slam-shut device.
Due to these factors additional protections should be
installed to stop flow in the event of a line break.
Overpressure Protection
Like most regulators, the Type 299H has outlet
pressure ratings lower than the inlet pressure ratings.
Complete downstream overpressure protection is
needed if the actual inlet pressure exceeds the outlet
pressure rating.
Overpressure protection for internal parts is built
into the main and pilot diaphragms by means of a
small spring on each post. The springs will allow
the diaphragm heads to move farther on the posts
avoiding damage to or bending of the valve trim.
Overpressuring any portion of a regulator or
associated equipment may cause leakage, parts
damage or personal injury due to bursting of
pressure-containing parts or explosion of accumulated
gas. Regulator operation within ratings does not
preclude the possibility of damage from external
sources or from debris in the pipeline. A regulator
should be inspected for damage periodically and after
any overpressure condition.
The pilot vent is provided with a 1/4 NPT tapped
connection in the spring case.
Installation
!
WARNING
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-relieving
or pressure-limiting devices (as required
by the appropriate code, regulation or
standard) to prevent service conditions
from exceeding those limits.
A regulator may vent some gas to the
atmosphere in hazardous or flammable
gas service. Vented gas might 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. Protect
the vent line or stack opening against
condensation or clogging.
If the regulator is exposed to an
overpressure condition, it should be
inspected for any damage that may have
occurred. Operation below these limits
does not preclude the possibility of
damage from external sources or from
debris in the pipeline.
If the Type VSX2 or VSX8 is exposed
to an overpressure condition, it should
be inspected for any damage that may
have occurred. Operation below these
limits does not preclude the possibility
of damage from external sources or from
debris in the pipeline.
In the case of a downstream line break,
numerous factors affect the capability
to evacuate gas from the pipeline.
These factors include the distance of
pipe to the break, the diameter of the
pipe, size of the break and the number
of restrictions, such as valves, elbows
and bends, downstream of the regulator
6
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