Fisher 1098-EGR - Page 5

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Types 1098-EGR and 1098H-EGR

Figure 2. Operational Schematics (continued)

DETAIL OF TYPE 1098H ACTUATOR

DETAIL OF OPTIONAL

RESTRICTED CAPACITY CONSTRUCTION

W3161–1*

W3419–1

SCREW-ON

TRAVEL STOP

THREADED

SPRING SEAT

TYPE Y600AM WITH TYPE 95H SUPPLY REGULATOR

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

LOADING PRESSURE

PILOT SUPPLY PRESSURE

M1008

95 SERIES

TYPE Y600AM

OPTIONAL:

TYPE 112 RESTRICTOR

Main Page

Description1
Specifications1
Body Sizes and End Connection Styles2
Outlet Pressure Ranges2
Specifications2
Actuator Sizes and Maximum Pressures3
Maximum and Minimum Differential Pressures for Main Valve Selection3
Supply Pressure Settings Required for the Type 95H Regulator3
Types 1098-EGR and 1098H-EGR4
Principle of Operation6
40 Psi (2,8 Bar) Relief Valve6
Installation and Startup6
Standard Single-Pilot Regulator6
Prestartup Considerations7
Pilot Adjustment8
Typical Dual-Pilot Boiler Fuel Installation9
Startup9
Dual-Pilot Boiler Fuel Control9
Boiler Fuel Pressure Control9
Boiler Fuel Configuration10
Installation10
Auxiliary Pilot Selection (Fast Stroke Dual Pilot)10
Working Monitor11
Working Monitor Performance11
Typical Working Monitor Installation12
Typical Wide-Open Monitor Installations13
Adjustment Recommendations for Monitor Applications13
Wide-Open Monitor13
Trim Package Removal14
Shutdown14
Single-Pilot, Dual-Pilot Regulator, or Wide-Open Monitor14
Maintenance14
Design Type EGR Main Valve15
Replacing Quick-Change Trim Package15
Types 1098-EGR and 1098H-EGR Travel Indicator Assembly15
Replacing Travel Indicator Assembly16
Type EGR Cap Screw (Key 3) Torque, FOOT-POUNDS (N-M)16
Replacing Trim Parts16
P590 Series Filter17
Type 6351 Pilot17
Types 6352 through 6354M Pilots18
61 Series Pilot and Type 1806 Relief Valve18
Type Y600AM Pilot19
Body Area19
Diaphragm and Spring Case Area19
Types 1098 and 1098H Actuator and Pilot Mounting Parts20
Parts Ordering21
Parts List21
Type EGR Main Valve22
Type EGR Valve Bodies23
Spring24
Type EGR Main Valve Construction25
Indicator Plug Assembly25
Complete Cast Iron Full-Capacity Main Valve Assembly25
Type EGR Main Valve Internal Constructions26
Quick-Change Trim Package Assembly26
Detail of Optional Restricted Capacity Construction26
Types 1098 and 1098H Actuators28
Types 1098 and 1098H Actuator Assemblies29
Standard P590 Series Filter Assembly30
Standard P590 Series Filter31
Type 6351 Pilot Assembly31
Old Type 6351 Assembly Drawing Showing Old Body Plug and Body Plug Gasket31
New Type 6351 Assembly Drawing Showing New Body Plug and Body Plug O-Ring31
Types 6352 through 6354H Pilot Assemblies32
Detail of Type 6354M or 6354H Pilot32
Complete Type 6352, 6353, or 6354L Pilot32
Types 61L, 61LD, and 61LE Pilot Assemblies33
Detail Handwheel Option33
Type 61H Pilot Assembly34
Type 61HP Pilot Assembly34
61 Series Pilots35
Type Y600A Regulator Assembly36
Type Y600AM Regulator Assembly37
Diaphragm Casing Cap Screw Location37
Types Y600A and Y600AM Parts List37
Type 95H Supply Pressure Regulator38
Type 95H Regulator38
Single-Pilot Mounting Assembly39
6350 Series Mounting Parts39
61 Series Pilot and Type 1806 Relief Valve Mounting40
61 Series Mounting Parts40
Auxiliary Pilot Mounting Parts40
Working Monitor Assembly41
Type 1098-EGR with Type Y600AM Mounting Parts42
Type Y600AM and Size 70 Type 1098 Combination43
Type 627M and Size 70 Type 1098 Combination43
Boiler Fuel Pressure Control Assembly43

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Fisher 1098-EGR - Page 5

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