Emerson 1098H-EGRs, 1098-EGR Data Sheet

Bulletin 71.2:1098-EGR

Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators

• Differential as low as

1 psi / 70 mbar

• Quick Change Trim Package

• Materials of Construction Compatible with Below

Grade Installations

• In-Service Travel

Inspection

February 2015

• No Atmospheric

Bleed

W6956

• Optional Noise

Abatement Trim (Up to 30dBA reduction)

• Easy Top Entry In-Line

Maintenance

• NPS 1 through 12 x 6 / DN 25 through 300 x 150 Body Sizes

Available

• Aqueous

Trim Packages (Application Specic)

• Stainless Steel Construction for Corrosive Environments and Oxygen Service

www.fisherregulators.com

D100143X012

Bulletin 71.2:1098-EGR

Specications

The Specications section lists pressure limitations and other specications for various Types 1098-EGR and 1098H-EGR constructions. Specications for a given regulator as it originally comes from the factory are stamped on nameplates located on both the actuator and main valve body, while the pilot control spring range is displayed on the pilot spring case and the pilot restriction code is stamped on the pilot body (S = standard gain, L = low gain and H = high gain).

Body Sizes and End Connection Styles

See Table 1

Main Valve Maximum Inlet Pressure

(1)

400 psig / 27.6 bar or body rating limit

whichever is lower

Maximum Pilot Supply Pressure

(1)(2)

600 psig / 41.4 bar

Outlet Pressure Ranges

See Table 2

Maximum and Minimum Differential Pressures

See Table 4

Actuator Sizes and Maximum Pressures

See Table 3

Supply Pressure Settings Required for the Type 95H Regulator

See Table 5

Pressure Registration

External

Temperature Capabilities

(1)

Nitrile (NBR): -20 to 180°F / -29 to 82°C Fluorocarbon (FKM): 0 to 300°F / -18 to 149°C, except water is limited to 0 to 200°F / -18 to 93°C

Ethylenepropylene (EPR):

-20 to 275°F / -29 to 135°C

Options

• NACE Construction

• Monitor Conguration

• Boiler Fuel Construction

• Aqueous (Liquid) Service Construction

• Noise Abatement Trim

Port Diameters and Travels

BODY SIZE

NPS DN In. mm In. mm

1 25 1-5/16 33.3 3/4 19 - - - - - - - - - - - -

2 50 2-3/8 60.3 1-1/8 29

3 80 3-3/8 85.7 1-1/2 38 40 7/8 22

4 100 4-3/8 111

6 150

200 x

8 x 6

150 and

and

300 x

12 x 6

150

PORT

DIAMETER

7-3/16 183

Standard Restricted

2 51

TRAVEL

Percentage of Flow Capacity

30 3/8 9.5

70 5/8 16

40 1 25

- - - - - - - -

In. mm

Construction Materials

Main Valve

Body and Body Flange: Cast iron,

WCC Steel, CF8M Stainless steel Cage: CF8M Stainless steel (Linear), 416 or 316 Stainless steel (Whisper Trim™) or hardened ENC coated Cast iron (Quick Opening)

Seat Ring and Valve Plug: Hardened 416 Stainless steel or 316 Stainless steel Travel Indicator Assembly: Steel or Stainless steel

except plastic for indicator scale Piston Ring: Polytetrauoroethylene (PTFE) O-rings and Soft Parts: Nitrile (NBR) (standard),

Fluorocarbon (FKM) or Ethylenepropylene (EPR)

Spring: Steel or Inconel® X-750 Bolting: Steel, Stainless steel

1. The pressure/temperature limits in this Bulletin or any applicable standard limitation should not be exceeded.

2. For stability or overpressure protection, a reducing regulator may be installed upstream of the pilot according to the Installation section.

- continued -

Inconel® is a mark owned by Special Metals Corporation.

Specications (continued)

Bulletin 71.2:1098-EGR

Construction Materials (continued)

Actuator

Bonnet: Zinc-plated Steel or 304 Stainless steel Diaphragm Case: Steel or Stainless steel Bolting: Steel, Stainless steel Diaphragm Plate: Cast iron,

316 or WCC Stainless steel

Stem Guide: Stainless steel Diaphragm and O-rings: Nitrile (NBR) (standard),

Fluorocarbon (FKM), Ethylenepropylene (EPDM)

Stem: 17-4 PH Stainless steel (standard) or 316 Stainless steel

Pilot Mounting Parts

Tubing and Connector Fittings: Steel (standard) or Stainless steel Pipe Bushing: Malleable iron, Stainless steel Pipe Nipples: Galvanized steel, Stainless steel

Type 6351 Pilot

Body, Body Plug and Spring Case: Aluminum

Valve Plug Stem: Brass (standard) or Stainless steel Diaphragm, O-rings and Gaskets: Nitrile (NBR) (standard) or Fluorocarbon (FKM)

Type 6352, 6353, 6354L, 6354M or 6354H Pilot

Body, Body Plug, Spring Case and Closing Cap:

Aluminum (standard) or Stainless steel Diaphragm: Nitrile (NBR), Fluorocarbon (FKM)

or Ethylenepropylene (EPR)

Types 6354M and 6354H Diaphragm Limiter: Aluminum

O-rings and Soft Parts: Nitrile (NBR) (standard) or Fluorocarbon (FKM)

Filter: Brass (Type P594-1 standard) or Aluminum (Type P593-1), except cellulose for lter element

61 Series Pilots Body and Spring Case: Cast iron

Upper and Lower Diaphragm:

Nitrile (NBR),

Neoprene (CR) or Fluorocarbon (FKM)

Composition Seats: Nitrile (NBR) or

Fluorocarbon (FKM)

O-rings: Nitrile (NBR) or Fluorocarbon (FKM)

Type Y600AM Pilot Body, Spring Case and Lower Casing: Cast Iron

Diaphragm: Nitrile (NBR) Composition Seats: Nitrile (NBR) Trim: Aluminum

Pilot and Actuator Vents Type Y602 vent assembly

Approximate Weights (With Standard SinglePilot Construction)

Type 1098 Actuator

Size 30 NPS 1 / DN 25 Body: 55 lbs / 25 kg

NPS 2 / DN 50 Body: 75 lbs / 34 kg NPS 3 / DN 80 Body: 115 lbs / 52 kg NPS 4 / DN 100 Body: 165 lbs / 75 kg NPS 6 / DN 150 Body: 350 lbs / 159 kg NPS 8 x 6 / DN 200 x 150 Body: 625 lbs / 284 kg NPS 12 x 6 / DN 300 x 150 Body: 1102 lbs / 500 kg

Size 40 (Standard)

NPS 1 / DN 25 Body: 65 lbs / 29 kg NPS 2 / DN 50 Body: 85 lbs / 39 kg NPS 3 / DN 80 Body: 125 lbs / 57 kg NPS 4 / DN 100 Body: 175 lbs / 79 kg NPS 6 / DN 150 Body: 360 lbs / 163 kg NPS 8 x 6 / DN 200 x 150 Body: 635 lbs / 288 kg NPS 12 x 6 / DN 300 x 150 Body: 1112

lbs

/ 504 kg

Size 70 NPS 1 / DN 25 Body: 140 lbs / 64 kg

NPS 2 / DN 50 Body: 160 lbs / 73 kg NPS 3 / DN 80 Body: 200 lbs / 91 kg NPS 4 / DN 100 Body: 250 lbs / 113 kg NPS 6 / DN 150 Body: 435 lbs / 197 kg NPS 8 x 6 / DN 200 x 150 Body: 710 lbs / 322 kg NPS 12 x 6 / DN 300 x 150 Body: 1187

lbs

/ 538 kg

Type 1098H Size 30 Actuator NPS 1 / DN 25 Body: 80 lbs / 36 kg

NPS 2 / DN 50 Body: 100 lbs / 45 kg NPS 3 / DN 80 Body: 140 lbs / 64 kg NPS 4 / DN 100 Body: 190 lbs / 86 kg NPS 6 / DN 150 Body: 375 lbs / 170 kg NPS 8 x 6 / DN 200 x 150 Body: 650 lbs / 295 kg NPS 12 x 6 / DN 300 x 150 Body: 1127

lbs

/ 511 kg

Table 1. Body Sizes and End Connection Styles

BODY SIZE

NPS DN

1 or 2 25 or 50 NPT, CL125 FF or CL250 RF NPT, CL150 RF, CL300 RF, CL600 RF, BWE, SWE or PN 16/25/40

3, 4 or 6 80, 100 or 150 CL125 FF or CL250 RF CL150 RF, CL300 RF, CL600 RF, BWE or PN 16/25/40

8 x 6 or 12 x 6 200 x 150 or 300 x 150 - - - - CL150 RF, CL300 RF, CL600 RF or BWE

CAST IRON STEEL OR STAINLESS STEEL

Bulletin 71.2:1098-EGR

A6563

INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE ATMOSPHERIC PRESSURE

Figure 2. Operational Schematics

Introduction

TYPE 6351

TYPES 6352, 6353, 6354

TYPE 1098-EGR WITH 6350 SERIES PILOT

Principle of Operation

TYPE 1098-EGR

The Types 1098-EGR and 1098H-EGR regulators provide economical and accurate pressure control in a wide variety of applications: natural gas distribution systems; fuel gas supply to industrial boilers, furnaces, ovens and mixers; and large commercial/industrial establishments such as shopping centers and schools. They are also used in plant air service and in liquid service where a slow stroking time (approximately 30 to 90 seconds) is desired on both

opening and closing the main valve.

The superior performance of this regulator is due to the amplifying effect of the pilot and the two-path control system. Changes in outlet pressure act quickly on the actuator diaphragm to provide fast response to system changes. Then, the pilot amplies any small system changes to position the main valve for precise pressure control.

Bubble-tight shutoff is achieved utilizing knife-edged seats in the valve plug. When the regulator is in the closed position, the knife-edged seats make a gas-tight seal against the upper and lower (port) valve seal. A variety of cages are offered for standard, speed of response and noise applications. The cage-guided metal plug provides superior control and stability.

The pilot-operated Types 1098-EGR and 1098H-EGR regulators both use inlet pressure as the operating medium, which is reduced through pilot operation to load the actuator diaphragm. Outlet or downstream pressure opposes loading pressure in the actuator and also opposes the pilot control spring. The Type 1098-EGR regulator operation schematic is shown in Figure 2.

In operation, assume that outlet pressure is below the pilot control setting. Control spring force on the pilot diaphragm thus opens the pilot valve plug, providing additional loading pressure to the actuator diaphragm. This loading pressure

forces the actuator stem upward, opening the main valve plug via a bump connection. The upward motion of the plug allows gas to ow through the cage into the

downstream system.

When downstream demand has been satised, outlet pressure tends to increase, acting on the pilot and actuator diaphragms. This pressure exceeds the pilot

control spring setting, moving the pilot diaphragm away

and letting the valve plug spring (Type 6351, 61 Series or Type Y600AM pilots) or bellows (Types 6352 through 6354M pilots) close the pilot valve plug (unbalanced in the Type 6351 or 61 Series pilots but balanced in the Types 6352 through 6354M pilots). Excess loading

Bulletin 71.2:1098-EGR

TYPE 1098-EGR

TYPE 1806

A6641

INLET PRESSURE OUTLET PRESSURE

LOADING PRESSURE ATMOSPHERIC PRESSURE

TYPE 61LD

TYPE 1098-EGR WITH TYPE 61LD PILOT AND TYPE 1806 RELIEF VALVE

TYPE 1098-EGR

TYPE 95H

OPTIONAL:

TYPE 112 RESTRICTOR

TYPE Y600AM

M1008

INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE PILOT SUPPLY PRESSURE

TYPE 1098-EGR WITH TYPE Y600AM PILOT AND TYPE 95H PRESSURE SUPPLY REGULATOR

Figure 2. Operational Schematics (continued)

FIXED RESTRICTOR

Bulletin 71.2:1098-EGR

pressure on the actuator diaphragm escapes downstream through the bleed hole (Type 6351 pilot), bleed orice (61 Series pilot), restriction (Types 6352 through 6354M pilots) or xed restrictor (Type Y600AM pilot).

Reduced actuator loading pressure permits the main valve to close. The combination of main valve spring force and valve plug unbalance provides positive valve plug shutoff against the port and upper seals.

To protect the Type 1098 or 1098H actuator diaphragm from excessive differential pressure, the 6300 Series pilots have a relief valve that allows loading pressure

to bleed downstream at approximately 25 psig / 1.7 bar

differential across the actuator diaphragm. relief valve (Type 1806) is required when differential is higher than 25 psid / 1.7 bar d or when using the 61 Series or Y600AM pilots.

An external

Installation

On the Type EGR main valve, normal pressure drop assists shutoff. Therefore, leakage may result during any reverse pressure drop condition. The regulator may be installed in any position. The normal mounting position is with the pilot mounted to the right of the main valve when looking downstream; however, the pilot may be moved to the left side. Control and supply lines necessary for installation are not supplied with the regulator.

In some cases, good piping practice will require that outlet piping be swaged up above the body size to prevent excessive pressure drop along the outlet line. The piping should be as close to the regulator outlet size as possible.

Construction Features

The Y600AM and 61 Series pilots provide the option for low setpoints and improved accuracy. The 61 Series pilot is available in a variety of congurations to meet your specic application needs – Type 61L low pressure pilot, Type 61LE low pressure, wide proportional band pilot, Type 61LD low pressure,

narrow proportional band pilot and the Type 61H

high pressure pilot. These pilots can be congured to maximize the performance under various application

scenarios. For instance, the 61 Series pilots are

available for fast closing, fast opening or monitor applications. Refer to Bulletin 71.8:61 for specics.

Boiler Fuel Pressure Control

To enhance proper operation and adequate response to negative pressure shock condition in low differential pressure boiler fuel control applications, use the Type 1098-EGR boiler fuel conguration: Type 1098-EGR with Yellow Main Spring, Quick Opening Cage, Type 6352 pilot, Size 70 Actuator and Type Y600AM or 627M Auxiliary Pilot mounted in

parallel with the Type 6352 pilot.

To provide faster response, two pilots mounted in parallel sense the downstream pressure. The

Type 6352 pilot is the primary controlling pilot and the

Type Y600AM or 627M auxiliary pilot stands by until it senses a negative pressure shock condition. The auxiliary pilot opens, allowing additional ow into the actuator, increasing the stroking speed and providing faster response. See Figure 5 for schematic.

The quick opening cage allows maximum capacity at shorter travels to decrease stroking time in opening and closing directions. The Yellow Main Spring requires that service conditions not exceed 20 psig /

1.4 bar maximum inlet pressure and 10 psi / 0.69 bar maximum differential pressure.

Pilots for Application Versatility

The balanced valve plug in the Types 6352, 6353 and 6354 pilots provides fast closing action when quick response is required and also minimizes outlet pressure changes due to varying supply pressures. A tapped spring case with gasketed closing cap is standard for remote venting or for pressure loading applications involving differential pressure control or remote pneumatic adjustment of the downstream pressure setting.

Supply the boiler pilot light gas with the Type 1098-EGR. The pilot light gas supply line should branch off the main fuel line downstream of the Type 1098-EGR and include a separate regulator to control the pressure, if required (see Figures 5 and 6) the Type 1098-EGR to have its main valve plug just off the seat waiting for the sudden negative shock created

when the boiler solenoid valve is opened to light the

boiler to the high re load. This conguration signicantly increases the stroking speed of the Type 1098-EGR.

nal pilot light gas

. This allows

Table 2. Outlet Pressure Ranges

PILOT TYPE

6351

6352

6353

(1)

6354L

(2)

6354M

(2)

6354H

61L 61LD 61LE

61H 10 to 65 0.7 to 4.5 Green Stripe 0Y066427022

61HP

Y600AM

1. Without diaphragm limiter.

2. With diaphragm limiter.

14 in. w.c. to 2 psig

7 in. w.c. to 2 psig

15 in. w.c. to 1.2 psig

Bulletin 71.2:1098-EGR

OUTLET (CONTROL) PRESSURE RANGE

psig bar

3 to 20 5 to 35

35 to 100

2 to 10 3 to 40

35 to 125

85 to 200 5.9 to 13.8 Blue 1L346127142 175 to 220 12.1 to 15.2 Blue 1L346127142 200 to 300 13.8 to 20.7 Green 15A9258X012

1 to 5 2 to 10 5 to 15

10 to 20

15 to 45

35 to 100

100 to 300

4 to 8 in. w.c.

7 to 16 in. w.c.

1.2 to 2.5

2.5 to 4.5

4.5 to 7

0.2 to 1.4

0.3 to 2.4

2.4 to 6.9

35 mbar to 0.1 bar

0.1 to 0.7

0.2 to 2.8

2.4 to 8.6

17 mbar to 0.1 bar

0.07 to 0.3

0.1 to 0.7

0.3 to 1.0

0.7 to 1.4

1.0 to 3.1

2.4 to 6.9

6.9 to 20.7

10 to 20 mbar

17 to 4 mbar

37 mbar to 0.08 bar

0.08 to 0.17

0.17 to 0.31

0.31 to 0.48

SPRING COLOR SPRING PART NUMBER

Green

Unpainted

Red

Yellow

Black

Yellow

Red

Yellow

Blue Brown Green

Yellow

Blue

Red

Unpainted

Yellow

Green

Light Blue

Black

1B986027212 1B788327022 1K748527202

14A9672X012 14A9673X012

1E392527022

1K748527202

1B886327022

1J857827022

1B886427022

1J857927142

1B886527022

1E392527022

1D387227022 1D465127142

1B653827052 1B653927022 1B537027052 1B537127022 1B537227022 1B537327052

Table 3. Actuator Sizes and Maximum Pressures

ACTUATOR TYPE ACTUATOR SIZE

1098

1098H 30 350 24.1 400 27.6

40 (standard)

OUTLET CONTROL PRESSURE EMERGENCY CASING PRESSURE

psig bar psig bar

100

75 50

6.9

5.2

3.4

115

82 65

7.9

5.6

4.5

Table 4. Maximum and Minimum Differential Pressures for Main Valve Selection

BODY SIZE

NPS DN psig bar psig bar psig bar psig bar

1 25

2 50

3 80

4 100

6, 8 x 6

and 12 x 6

1. Maximum inlet pressure is equal to set pressure plus maximum differential.

2. Requires special 6300 Series pilot construction without integral relief valve and with external Type 1806 40 psid / 2.8 bar d relief valve.

3. Should not exceed the body rating limit. Use this pressure value or the body rating limit, whichever is lower.

150, 200 x 150

and 300 x 150

SPRING PART

NUMBER

14A9687X012 Green 60 4.1 3.5 0.24 2.5 0.17 1 0.07 14A9680X012 Blue 125 8.6 5 0.34 3 0.21 1.5 0.10 14A9679X012 Red 400 14A6768X012 Yellow 20 1.4 - - - - - - - - 2 0.14 1 0.07 14A6626X012 Green 60 4.1 4 0.28 3 0.21 1.5 0.10 14A6627X012 Blue 125 8.6 6 0.41 5 0.34 2 0.14 14A6628X012 Red 400 14A6771X012 Yellow 20 1.4 - - - - - - - - 2.5 0.17 1 0.07 14A6629X012 Green 60 4.1 5 0.34 4 0.28 2 0.14 14A6630X012 Blue 125 8.6 8 0.55 6 0.41 2.5 0.17 14A6631X012 Red 400 14A6770X012 Yellow 20 1.4 - - - - - - - - 3.5 0.25 1.3 0.09 14A6632X012 Green 60 4.1 10 0.69 5 0.34 2.5 0.17 14A6633X012 Blue 125 8.6 13 0.90 8 0.55 3 0.21 14A6634X012 Red 400 15A2253X012 Yellow 20 1.4 - - - - - - - - 6 0.42 2.2 0.15 14A9686X012 Green 60 4.1 13 0.90 9.5 0.66 4 0.28 14A9685X012 Blue 125 8.6 19 1.3 14 0.97 6 0.41 15A2615X012 Red 400

SPRING

COLOR

MAXIMUM ALLOWABLE

DIFFERENTIAL PRESSURE

(3)

27.6

(3)

27.6

(1)

Size 30 Actuator Size 40 Actuator Size 70 Actuator

(3)

7 0.48 5 0.34 2.5 0.17

11 0.76 10 0.69 3 0.21

14 0.97 11 0.76 4 0.28

22 1.5 13 0.90 5 0.34

(2)

MINIMUM DIFFERENTIAL PRESSURE

REQUIRED FOR FULL STROKE

1.9 19 1.3 8 0.55

Bulletin 71.2:1098-EGR

Table 5. Supply Pressure Settings Required for the Type 95H Regulator

BODY SIZE

NPS DN

1 25

2 50

3 80

4 100

6 or 8 x 6

1. The pressures shown in the table are the minimum supply pressures required by the pilot. If the inlet pressure is less than shown, an external pilot supply is necessary.

150 or

200 x 150

TYPE EGR

SPRING COLOR

Green

Blue Red

Green

Blue Red

Green

Blue Red

Green

Blue Red

Green

Blue Red

Red Unpainted Yellow Green Light Blue Black

psig bar psig bar psig bar psig bar psig bar psig bar

0.41

0.48

0.55

0.41

0.55

0.90

0.48

0.62

0.97

0.55

0.76

1.1

0.90

1.2

1.5

0.41

0.48

0.55

0.41

0.55

0.90

0.48

0.62

0.97

0.55

0.76

1.1

0.90

1.2

1.5

SUPPLY PRESSURE

Type Y600AM Spring Color

0.48

0.55

0.62

0.48

0.62

0.97

0.55

0.69

1.0

0.62

0.83

1.2

0.97

1.2

1.6

8 10 11

9 11 16

10 12 17

11 14 19

15 20 25

0.55

0.69

0.76

0.62

0.76

1.1

0.69

0.83

1.2

0.76

0.97

1.3

1.0

1.4

1.7

0.76

0.90

0.97

0.83

0.97

1.3

0.90

1.0

1.4

0.97

1.2

1.5

1.2

1.6

1.9

0.90

0.97

1.0

0.90

1.0

1.4

0.97

1.1

1.5

1.0

1.2

1.6

1.4

1.7

2.0

Protection from Foreign Material

The standard brass Type P594-1 lter or aluminum Type P593-1 lter in the pilot inlet connection has a replaceable cellulose lter element. A Type 252 lter is recommended for heavy amounts of foreign material in the lines. These lters are described in separate bulletins.

Noise Abatement Trim

At elevated pressure drops and ow rates regulators with standard trims can produce noise levels that exceed regulatory limits, causing a nuisance for neighbors and even causing mechanical damage to equipment and piping. Whisper Trim™ Cages are available with the Type 1098-EGR to reduce noise be up to 30 dBA.

Applications

Low Pressure Gas Distribution Systems

The Type 1098-EGR offers superior performance when utilized to supply low pressure (typically 4 to 12 in. w.c. / 10 to 30 mbar) at district stations operated

by gas distribution companies. The two path control system (outlet pressure by control pilot) allows for tight control over the large range of ows typical to district stations. The knife-edged seats in the main valve plug allow for tight shutoff and the cage-guided metal plug aids in stability. Droop can be reduced to a minimum by utilizing an application specic pilot control system, main valve spring and actuator combination (for example, a low droop system would utilize the 95 Series Pilot supplying a Type Y600AM control pilot, size 70 actuator, a xed restrictor or the Type 112

variable restrictor set at 3 and the smallest appropriate

main valve spring).

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 1098-EGR regulators in monitoring systems are as follows:

+ 16 hidden pages