Bulletin 71.2:1098-EGR July 2011 Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators •  Differential as low as   1 psi / 70 mbar •  Materials of Construction   Compatible with Below   Grade Installations •  Quick Change    Trim Package •  In-Service Travel Inspection •  Optional Noise Abatement Trim   (Up to 30dBA reduction) •  NPS 1 through 12 x 6 / DN 25 through   300 x 150 Body Sizes   Available •  No Atmospheric   Bleed •  Aqueous Trim Packages (Application Specific) W6956 •  Easy Top Entry In-Line Maintenance D100143X012 •  Stainless Steel Construction  for Corrosive Environments and Oxygen Service www.fisherregulators.com

Body Sizes and End Connection Styles Main Valve Maximum Inlet Pressure^) 400 psig / 27,6 bar or body rating limit Maximum Pilot Supply PressureCX2) Outlet Pressure Ranges Maximum and Minimum Differential Pressures Actuator Sizes and Maximum Pressures Supply Pressure Settings Required for the Pressure Registration except water is limited to 0° to 200°F / -18° to 93°C • NACE Construction • Monitor Configuration • Boiler Fuel Construction • Aqueous (Liquid) Service Construction • Noise Abatement Trim Port Diameters and Travels Construction Materials Main Valve Body and Body Flange: Cast iron, WCC...

Bulletin 71.2:1098-EGR Specifications (continued) Type 6352, 6353, 6354L, 6354M, or     6354H Pilot (continued)     Filter: Brass (Type P594-1 standard) or Aluminum (Type P593-1), except cellulose for filter 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...

Table 2. Outlet Pressure Ranges Table 3. Actuator Sizes and Maximum Pressures Table 4. Maximum and Minimum Differential Pressures for Main Valve Selection

Bulletin 71.2:1098-EGR Introduction 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...

Bulletin 71.2:1098-EGR TYPE 6351 TYPE 1098-EGR TYPES 6352, 6353, 6354 INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE ATMOSPHERIC PRESSURE A6563 Type 1098-EGR with 6350 series pilot TYPE 1098-EGR TYPE 1806 TYPE 61LD INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE ATMOSPHERIC PRESSURE A6641 Type 1098-EGR with type 61lD pilot and type 1806 relief valve Figure 2. Operational Schematics 6

Bulletin 71.2:1098-EGR TYPE 1098-EGR TYPE 95H OPTIONAL: TYPE 112 RESTRICTOR TYPE Y600AM INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE PILOT SUPPLY PRESSURE FIXED RESTRICTOR M1008 Type 1098-EGR with type y600AM pilot and type 95h pressure supply regulator Figure 2. Operational Schematics (continued) 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 configurations to meet your specific application needs – Type 61L low pressure pilot, Type 61LE low pressure, wide proportional band pilot,...

Table 5. Supply Pressure Settings Required for the Type 95H Regulator 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 final pilot light gas pressure, if required (see Figures 5 and 6). This allows 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 fire load. This configuration significantly increases the stroking...

Bulletin 71.2:1098-EGR VENT VALVE UPSTREAM PRESSURE VENT VALVE HAND VALVE UPSTREAM BLOCK VALVE INTERMEDIATE PRESSURE HAND VALVE DOWNSTREAM PRESSURE VENT VALVE VENT VALVE HAND VALVE HAND VALVE SECOND STAGE REGULATOR TYPE 1098-EGR OR 1098H-EGR WORKING MONITOR REGULATOR TYPE 161AYW or 627-109 MONITORING PILOT DOWNSTREAM BLOCK VALVE STANDARD 6350 SERIES PILOT FOR TYPE 1098-EGR OR 1098H-EGR REGULATOR 26A4298–A A2118–2 Figure 3. Working Monitor System Table 6. Working Monitor Performance MONITORING PILOT INFORMATION Spring Part Number MINIMUM PRESSURE AT WHICH WORKING MONITOR REGULATOR CAN BE SET 7...

Bulletin 71.2:1098-EGR 16A4296–A FLEXIBLE WIDE-OPEN MONITOR ARRANGEMENT THAT PERMITS WIDE-OPEN MONITOR TO BE EITHER UPSTREAM OR DOWNSTREAM 16A4297–A MINIMUM PIPING WIDE-OPEN MONITOR ARRANGEMENT THAT REQUIRES WIDE-OPEN MONITOR ALWAYS TO BE UPSTREAM Figure 4. Wide-Open Monitor System 10

Bulletin 71.2:1098-EGR TYPE 1098-EGR SIZE 70 WITH QUICK OPENING CAGE AND YELLOW MAIN SPRING TO BURNER PILOT 20 psi / 1,4 bar MAxIMUM TO MAIN BURNER TYPE 6352 WORKING PILOT TYPE Y600AM AUxILIARY PILOT E0711 Figure 5. Boiler Fuel Configuration Wide-Open Monitor (Figure 4) Either the upstream or downstream regulator can be the monitoring regulator. 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...