Emerson 299Hs, 299H Instruction Manual

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Instruction Manual

Form 5497

January 2014

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. (Regulator Technologies) 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. Complete instructions and parts list for the 67C Series filtered pilot supply regulator and other Fisher equipment are found in separate instruction manuals.

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. The 299H Series regulators can handle inlet pressures up to 175 psi / 12.1 bar depending on orifice size.

W7513

Figure 1. 299H Series Pressure Reducing Regulator

The integral token relief on the Types 299HR and 299HSR regulators is located in the pilot and opens to relieve minor overpressure.

The Type 299HS provides overpressure or overpressure and underpressure protection by completely shutting off the flow of gas to the downstream system. It comes with a Type VSX-2 slam-shut device which can be configured 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 VSX-2 slam-shut device has internal or external registration. External registration requires a downstream sensing line.

D102684X012

www.fisherregulators.com

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 299HSR: Same as the Type 299HS with an internal token relief valve.

Body Size and End Connection Styles

See Table 1

Maximum Operating Inlet Pressureby Orifice Size(1)

1/4 x 3/8-inch / 6.4 x 9.5 mm..........	175 psig / 12.1 bar
3/8 inch / 9.5 mm...........................	175 psig / 12.1 bar
1/2 inch / 13 mm............................	175 psig / 12.1 bar
3/4 inch / 19 mm............................	150 psig / 10.3 bar
7/8 inch / 22 mm(5)...........................	125 psig / 8.6 bar
1 inch / 25 mm(5).................................	100 psig / 6.9 bar
1-3/16 inches / 30 mm(5)....................	80 psig / 5.5 bar

Maximum Casing and Emergency Outlet Pressure(1)

66 psig / 4.5 bar

Outlet (Control) Pressure Ranges(1)(2)

See Table 2

Maximum Set Pressure for Type 299HS(1)

16 psig / 1.1 bar

Maximum Set Pressure for Slam-Shut Device(1)

23 psig / 1.6 bar

Minimum and Maximum Trip Pressure Ranges

See Table 3

Type VSX-2 Sensing Line Connection

1/4 NPT

Pressure Control Accuracy (Fixed Factor)(PFM)

±1%(3) 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)

-20 to 150°F / -29 to 66°C

Approximate Weight

21 pounds / 10 kg

Pressure Registration

Internal, External or Dual Registration

See Figure 2

Fixed Restriction Sizes

0.044 inch / 1.1 mm, Red (standard gain)

0.071 inch / 1.8 mm, Green (low gain)

0.082 inch / 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.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 filter (only one may be used, not both) may be ordered with the Type 299H, but not both.

4.For inches 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 orifice size is not available for Types 299HS and 299HSR.

Table 1. Body Sizes and End Connection Styles

BODY SIZE,	BODY MATERIAL AND END CONNECTION STYLE
INCH / DN	Cast Iron (For Types 299H and 299HR only)	Ductile Iron	Steel (For Types 299H and 299HR only)
	Cast Iron (For Types 299H and 299HR only)	Ductile Iron	Steel (For Types 299H and 299HR only)

1-1/4	NPT	- - - -	- - - -
1-1/2	NPT	NPT	NPT

2 / 50	NPT and CL125 FF(1) flanged	NPT, CL125 FF and CL250 RF flanged	NPT and CL150 RF flanged
		and PN 10/16 flanged

1. This flange is available with a face-to-face dimension of 7.5 inches / 190 mm or 10 inches / 254 mm.

299H Series

Table 2. Outlet Pressure Ranges

TYPE

PILOT CONTROL SPRING

OUTLET (CONTROL)

PRESSURE RANGE

299H

299HR,

Part Number

Color

Free Length

Wire Diameter

299HS and

299HSR

Inch w.c.

mbar

Inch

3.5 to 6(1)

9 to 15(1)

T13707T0012

Black

1.86

47.2

0.055

1.40

5 to 9(1)

12 to 22(1)

T13589T0012

Yellow

2.05

52.1

0.051

1.30

7 to 20(1)

17 to 50(1)

1N3112X0012

Unpainted

2.18

55.4

0.075

1.90

16 to 40(1)

40 to 99(1)

1B413727222

Purple

2.12

53.8

0.092

2.34

1 to 3.25 psig

69 mbar to 0.22 bar

T13593T0012

Light blue

2.12

53.8

0.105

2.67

2.75 to 6 psig

0.19 to 0.41 bar

T13671T0012

Orange

2.40

61.0

0.120

3.05

5 to 16 psig

0.34 to 1.1 bar

T13600T0012

Red

2.10

53.3

0.142

3.61

14 to 35 psig

0.97 to 2.4 bar

- - - -

19B0432X012

Zinc

2.15

54.6

0.207

5.26

30 to 60 psig

2.1 to 4.1 bar

- - - -

19B0432X022

Green

2.75

69.8

0.225

5.71

1. Use a pilot supply regulator if actual inlet pressure varies more than ±20 psi / ±1.4 bar and the published accuracy is required.

Table 3. Type VSX-2 High and Low Trip Pressure Ranges

SLAM-SHUT

FOR USE WITH MAIN VALVE

MINIMUM TO MAXIMUM

TYPE VSX-2

SPRING FREE

SPRING WIRE

RANGE

SPRING RANGE

TRIP PRESSURE

SPRING PART

LENGTH

DIAMETER

REGISTRATION

Inch w.c.

mbar

Inch w.c.

mbar

NUMBER

Inch

3.5 to 6

9 to 15

12 to 25

30 to 62

T14162T0012

3.15

80.0

0.07

1.70

5 to 9

12 to 22

3.5 to 6

9 to 15

5 to 9

12 to 22

20 to 52

50 to 129

T14163T0012

3.15

80.0

0.08

2.03

7 to 20

17 to 50

High

Internal or

7 to 20

17 to 50

1.4 to 3.9 psig

97 to 269

T14164T0012

3.15

80.0

0.09

2.31

Pressure

16 to 40

40 to 99

External

Trip

16 to 40

40 to 99

1 to 3.25 psig

69 mbar to 0.22 bar

3.8 to 8.7 psig

262 to 600

T14165T0012

3.15

80.0

0.12

3.05

2.75 to 6 psig

0.19 to 0.41 bar

2.75 to 6 psig

0.19 to 0.41 bar

5.8 to 16 psig

400 to 1103

T14166T0012

3.15

80.0

0.14

3.51

5 to 16 psig

0.35 to 1.1 bar

5 to 16 psig

0.35 to 1.1 bar

11.6 to 23 psig

800 to 1586

T14167T0012

3.15

80.0

0.17

4.32

5 to 9

12 to 22

2 to 12

5 to 30

T14168T0012

3.15

80.0

0.04

1.09

7 to 20

17 to 50

7 to 20

17 to 50

4 to 30

10 to 75

T14169T0012

3.15

80.0

0.06

1.40

External

16 to 40

40 to 99

1 to 3.25 psig

69 mbar to 0.22 bar

0.36 to 2.3 psig

25 to 159

T14170T0012

3.15

80.0

0.07

1.70

2.75 to 6 psig

0.19 to 0.41 bar

2.75 to 6 psig

0.19 to 0.41 bar

1.5 to 10.8 psig

103 to 745

T14171T0012

3.15

80.0

0.13

3.17

5 to 16 psig

0.35 to 1.1 bar

Low

5 to 9(1)

12 to 22(1)

Pressure

7 to 20(1)

17 to 50(1)

- - - -

- - - - - - - - - - -

- - - -

Trip

16 to 40(1)

40 to 99(1)

1 to 3.25 psig(2)

69 mbar to

70% of regulator

0.22 bar

(2)

T14170T0012

3.15

80.0

0.07

1.70

setpoint to

Internal

2.75 to 6 psig(2)

0.19 to 0.41 bar(2)

2.3 psig

159 mbar

70% of regulator

2.75 to 6 psig(2)

0.19 to 0.41 bar(2)

setpoint to

T14171T0012

3.15

80.0

0.13

3.17

10.8 psig

745 mbar

75% of regulator

5 to 16 psig(3)

0.35 to 1.1 bar(3)

setpoint to

T14171T0012

3.15

80.0

0.13

3.17

10.8 psig

745 mbar

1. Low Pressure Trip cannot be used with this main valve spring range for an internally registered Type VSX-2 to provide underpressure shutoff under flowing conditions. If protection against loss of inlet pressure is the only required function for the Type VSX-2 then an internally registered Type VSX-2 may be used with the same minimum trip pressures as an externally registered Type VSX-2.

2. 70% of regulator setpoint is the minimum allowable Low Pressure Trip setting for an internally registered Type VSX-2 used with this main valve spring range. If protection against loss of inlet pressure is the only required function for the Type VSX-2 then an internally registered Type VSX-2 may be used with the same minimum trip pressures as an externally registered Type VSX-2.

3. 75% of regulator setpoint is the minimum allowable Low Pressure Trip setting for an internally registered Type VSX-2 used with this main valve spring range. If protection against loss of inlet pressure is the only required function for the Type VSX-2 then an internally registered Type VSX-2 may be used with the same minimum trip pressures as an externally registered Type VSX-2.

Note: Other spring combinations are available, please contact your local Sales Office for additional information.

299H Series

			B
		J
	OUTLET		E
	OUTLET		H
			J
			3/4 NPT
			DOWNSTREAM	G
			CONTROL LINE
			CONNECTION	EXTERNAL REGISTRATION
				EXTERNAL REGISTRATION
		3/4 NPT
	INLET	CONTROL LINE
	INLET	CONNECTION	PILOT SUPPLY
		CONNECTION

			SCREEN
		G
		K	C
		K	A
		F	J
			J
			3/4 NPT
			DOWNSTREAM	G
			CONTROL LINE	G
		INTERNAL	CONTROL LINE
		INTERNAL	CONNECTION	DUAL REGISTRATION
E0070		REGISTRATION		DUAL REGISTRATION

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

LOADING PRESSURE

TYPE 299H

A7272	A7272
A7272
TOKEN RELIEF CLOSED	TOKEN RELIEF OPEN
	TYPE 299HR (TOKEN RELIEF DETAIL)

Figure 2. 299H Series Operational Schematics

299H Series

E0069

EXTERNAL REGISTRATION

E0070

INTERNAL REGISTRATION

E0072

INLET PRESSURE

OUTLET PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE

TYPE 299HS

Figure 2. 299H Series Operational Schematics (continued)

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).

299H Series

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.

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

The Type VSX-2 slam-shut device on the Type 299HS 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 main regulator and of the variations to the inlet pressure. The Type VSX-2 has internal or external registration. External registration requires a downstream sensing line.

The slam-shut disk is held in the open position (reset position) by a small ball holding the disk stem. If

the pressure below the diaphragm increases (or decreases) reaching the Type VSX-2 setpoint, the diaphragm will travel upwards (or downwards) operating a lever which in turn releases the ball.

Once the ball is 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 VSX-2 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

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