Brand: Fisher

Fisher 1098-EGR Pressure Reducing Regulator

Name: Fisher 1098-EGR Regulator – Datasheet & Price Quote
Brand: Fisher

Description

Overview

The Fisher 1098-EGR is a pilot-operated pressure reducing regulator from Emerson, engineered to deliver economical and accurate downstream pressure control across natural gas distribution systems, fuel gas supply to industrial boilers, furnaces, ovens, and mixers, and large commercial or industrial facilities such as shopping centers, schools, and data centers. Built around a pilot-operated control system, the Fisher 1098-EGR maintains stable outlet pressure even as load demand or inlet pressure varies, while eliminating the nuisance and wasteful atmospheric bleed that direct-operated regulators commonly vent to atmosphere.

Backed by manufacturer datasheet documentation, Seven Star LLC proudly supplies the Fisher 1098-EGR Pressure Reducing Regulator to gas distribution utilities, industrial plants, and commercial developments throughout the Sultanate of Oman and the wider GCC, with manufacturer documentation and technical support. Gas network operators and facility managers in Muscat, Sohar, and across the region can source 1098-EGR regulators through Seven Star LLC with manufacturer documentation.

Operating Principle

The Fisher 1098-EGR uses a pilot-operated control architecture in which a smaller pilot regulator senses downstream pressure and, in turn, precisely modulates the loading pressure applied to the main regulator’s large, oversized diaphragm. Because the main valve plug position is controlled indirectly through this pilot loading signal rather than being sprung directly against process pressure, the 1098-EGR achieves substantially tighter pressure control than a comparable direct-operated spring-loaded regulator, particularly at low differential pressures as small as 1 psid across the regulator.

The oversized diaphragm and linear control cage together give the Fisher 1098-EGR a high turndown capability, meaning the regulator maintains stable, accurate downstream pressure across a wide range of flow demand rather than only performing well near its rated capacity. Because the pilot system routes all bleed gas downstream rather than venting it to atmosphere, the 1098-EGR eliminates the fugitive emissions and wasted gas associated with conventional bleed-type pilots, a meaningful advantage for gas utilities under increasing environmental and safety scrutiny.

Engineering Design of the Fisher 1098-EGR

The Fisher 1098-EGR is available across a wide range of body sizes and end connection styles, from NPS 1 through NPS 12 x 6, in NPT, raised-face flanged, and butt-weld or socket-weld configurations, giving specifying engineers flexibility to match the regulator directly to existing pipeline connections. The top-entry trim design is a defining feature of the regulator’s maintainability: trim parts can be inspected, cleaned, and replaced without removing the regulator body from the pipeline, dramatically reducing the labor and downtime associated with routine maintenance on buried or hard-to-access gas distribution stations.

An optional Whisper Trim cage reduces regulator noise by as much as 30 dBA, an important consideration for regulator stations located near residential areas or inside commercial buildings such as shopping centers and schools. Elastomer diaphragm and seat materials are selected to match the service temperature, with nitrile, fluorocarbon, and ethylene propylene options covering a combined range from -29°C up to 149°C, and the maximum inlet pressure rating of 400 psig or the body’s pressure class limit, whichever is lower, defines the regulator’s upstream operating envelope.

Key Features

The Fisher 1098-EGR combines pilot-operated precision with practical maintenance and noise-control features for demanding gas and fuel supply applications.

Low differential applications are supported with accurate control at pressure differentials as low as 1 psid or 70 mbar differential.
Precise pilot-operated pressure control provides stable downstream pressure regardless of load changes or inlet pressure variations.
The optional Whisper Trim cage reduces regulator noise by up to 30 dBA for installations near sensitive occupied spaces.
A top-entry design enables easier in-line maintenance, since trim parts can be inspected and replaced without removing the body from the pipeline.
The pilot-operated control system eliminates nuisance bleed to atmosphere by routing all bleed gas downstream instead.
An oversized diaphragm and linear cage provide high turndown capability across widely varying downstream flow demand.
Body sizes from NPS 1 through NPS 12 x 6 and multiple end connection styles support a broad range of pipeline configurations.
Elastomer options covering nitrile, fluorocarbon, and ethylene propylene extend the regulator’s usable temperature range.

Industrial Applications

The Fisher 1098-EGR Pressure Reducing Regulator is a standard choice across natural gas distribution networks, industrial fuel gas supply to boilers and furnaces, and pressure reduction stations serving large commercial complexes, shopping centers, schools, and data center power generation, wherever accurate, low-bleed pressure control is required at the point of use. Its high turndown capability makes it especially well suited to facilities with widely fluctuating gas demand across a working day.

Working closely with plant engineers in the region, Seven Star LLC distributes the 1098-EGR to gas utilities, industrial plants, and EPC contractors across Oman and the GCC, supporting fuel gas and distribution projects in the Sohar and Salalah economic zones as well as commercial and utility developments around Muscat. Buyers sourcing the Fisher 1098-EGR through Seven Star LLC’s trusted supply channel receive genuine Emerson-manufactured regulators along with local engineering support for trim and end-connection selection.

Technical Specifications

The table below summarizes the primary Fisher 1098-EGR specifications relevant to sizing and material selection.

Parameter	Specification
Model	Fisher 1098-EGR Pressure Reducing Regulator
Regulator Type	Pilot-operated pressure reducing regulator
Body Sizes	NPS 1, 2, 3, 4, 6, 8 x 6, 12 x 6 (DN 25–300 x 150)
End Connections	NPT, CL150/300/600 RF, CL125FF, CL250RF, BWE, SWE, PN 16/24/40
Maximum Inlet Pressure	400 psig / 28 bar, or body rating limit, whichever is lower
Low Differential Capability	Accurate control down to 1 psid / 70 mbar differential
Noise Reduction	Optional Whisper Trim cage, up to 30 dBA reduction
Temperature Range (Nitrile)	-29 to 82°C
Temperature Range (Fluorocarbon)	-18 to 149°C
Temperature Range (EPR)	-29 to 135°C

Request a Quote for Fisher 1098-EGR Pressure Reducing Regulator

Seven Star LLC invites gas utilities, industrial plants, and procurement teams across Oman and the GCC to submit a formal RFQ for the Fisher 1098-EGR Pressure Reducing Regulator. With fast quotation turnaround and technical support, Seven Star LLC supplies on request, provides full technical datasheets on request, and connects buyers directly with our instrumentation division for sizing and trim selection support. Contact Seven Star LLC today for a quotation on the Fisher 1098-EGR with local engineering support.

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About brand

Fisher is the control valve brand of Emerson. Its history starts in 1880 in Marshalltown, Iowa, where William Fisher, working at the town waterworks, invented a constant-pressure pump governor and founded a company to make it. Emerson bought Fisher Controls in 1992, and Marshalltown remains a main engineering and manufacturing site for Fisher valves. The brand covers control valves, actuators, FIELDVUE digital valve controllers, regulators and level controllers.

Seven Star LLC is an independent supplier listing Fisher control valves, actuators, positioners, regulators and spare parts for buyers in Oman and the GCC. Replacement valves and trim are matched from the serial number on the valve nameplate.

Fisher company profile

Origin	William Fisher's constant-pressure pump governor, Marshalltown, Iowa, USA (1880)
Ownership	Owned by Monsanto from 1969; sold to Emerson in 1992 and combined with Rosemount as Fisher-Rosemount, later Emerson Process Management. Today a brand of Emerson.
Main site	Marshalltown, Iowa, USA
Product families	Sliding-stem and rotary control valves, spring-diaphragm and piston actuators, FIELDVUE digital valve controllers, pressure regulators, displacer and digital level controllers
Typical duty	Throttling control of liquids, gas and steam, high-pressure and severe service, instrument supply and gas pressure reduction

Milestones

1880: William Fisher builds a constant-pressure pump governor in Marshalltown, Iowa.
1969: Monsanto acquires Fisher Controls.
1992: Emerson buys Fisher and combines it with Rosemount as Fisher-Rosemount, later Emerson Process Management.

Fisher valves, actuators and instruments

Series	Type	Typical use
easy-e ES, ET, EZ	Sliding-stem globe and angle valves	Cage-guided globe valves: ES with unbalanced plug, ET with balanced trim for higher pressure drop; EZ unbalanced with a seat ring retainer for viscous or dirty fluids
GX	Compact globe valve with integral actuator	Standard chemical and process duty where a compact valve package is preferred
HPT, HPAT	High-pressure globe and angle valves	Pressure classes up to ASME CL2500, compressor recycle and high-pressure letdown
V150, V200, V300, V250	Vee-Ball segmented ball and full-bore ball control valves	High-capacity control of liquids, gas and fibrous or slurry service
CV500	Eccentric rotating plug valve	Erosive, coking and dirty service
8560, 8580	High-performance butterfly valves	Large-line throttling and on-off control
657, 667, 1052, 1061, easy-Drive	Spring-diaphragm, piston and electric actuators	657 and 667 for sliding-stem valves; 1052 and 1061 for rotary valves; easy-Drive where no air is available
FIELDVUE DVC6200, DVC2000, 3610J	Digital valve controllers and positioners	HART positioning with valve diagnostics; 3610J pneumatic positioner for rotary actuators
627, 1098-EGR, 67C	Pressure regulators	Gas pressure reduction, pilot-operated regulation and instrument air supply
DLC3100, 2500	Digital and pneumatic level controllers	Displacer level and interface on separators and scrubbers

Where Fisher valves are used

Fisher control valves and regulators are standard equipment in oil and gas production, refineries, gas processing and LNG, petrochemicals, power plants and water systems. Typical loops are separator level and pressure, compressor anti-surge and recycle, fuel gas pressure reduction, feedwater and steam control, and chemical dosing. FIELDVUE controllers add diagnostics that help plan valve maintenance before a turnaround.

Ordering Fisher valves and spare parts: what we need

For spares, send the serial number from the valve nameplate together with the valve type, size, pressure class, trim and actuator type and size. Emerson keeps the build record behind the serial number, so plug, seat ring, cage, packing and diaphragm kits can be matched without guesswork. For a FIELDVUE or regulator, send the full model and type number and the mounting details. For a new valve add the process data: fluid, flow range, inlet and outlet pressure, temperature, leakage class, fail position, air supply and signal.

Facts checked against Emerson Fisher product information and published company histories, October 2026.

Browse Fisher products by category: Control Valves, Valve Actuator, Valve Positioner, Regulators, Level Transmitter.

FAQ

Questions about the Fisher 1098-EGR Pressure Reducing Regulator

Answers from our engineering team on installation, compatibility and integration.

01What makes the Fisher 1098-EGR different from a direct-operated regulator?

The 1098-EGR uses a pilot-operated control system rather than a simple direct spring-loaded mechanism, giving it tighter pressure control, higher turndown, and the ability to route bleed gas downstream instead of venting to atmosphere.

02What is the lowest differential pressure the Fisher 1098-EGR can control?

The 1098-EGR can accurately control at pressure differentials as low as 1 psid or 70 mbar, making it suitable for low-differential distribution and industrial supply applications.

03Can the Fisher 1098-EGR be maintained without removing it from the pipeline?

Yes. Its top-entry design allows trim parts to be inspected, cleaned, and replaced in place, without removing the regulator body from the pipeline, significantly reducing maintenance downtime.

04Is a low-noise version of the Fisher 1098-EGR available?

Yes. An optional Whisper Trim cage is available that reduces regulator noise by up to 30 dBA, suitable for installations near residential or occupied commercial spaces.

05Is Seven Star LLC an experienced supply partner for Fisher products?

Yes, Seven Star LLC is an experienced supplier of Fisher in Oman and the GCC, supplying Emerson-manufactured regulators, valves, and instrumentation with local technical support.