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

Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators
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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 1

Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators • ifferential as low as D 1 psi / 70 mbar • Quick Change Trim Package • Materials of Construction Compatible with Below Grade Installations • In-Service Travel Inspection • Optional Noise Abatement Trim (Up to 30dBA reduction) • Easy Top Entry In-Line Maintenance Figure 1. Types 1098-EGR Pressure Reducing Regulator • PS 1 through 12 x 6 / N DN 25 through 300 x 150 Body Sizes Available • Aqueous Trim Packages (Application Specific) • Stainless Steel Construction for Corr

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 2

Type 1098-EGR Specifications The Specifications section lists pressure limitations and other specifications for various Types 1098-EGR and 1098H-EGR constructions. Specifications 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). To determine maximum pressure ratings, the individual ratings for the main valve, actuator...

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 3

Type 1098-EGR Specifications (continued) 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 and Connector Fittings: Steel (standard) or Tubing Stainless steel Pipe Bushing: Malleable iron, Stainless steel Pipe Nipples:...

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 4

INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE ATMOSPHERIC PRESSURE TYPE 1098-EGR WITH 6350 SERIES PILOT Figure 2. Operational Schematics 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. The pilot-operated Types 1098-EGR and 1098H-EGR regulators both use inlet...

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 5

INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE ATMOSPHERIC PRESSURE TYPE 1098-EGR WITH TYPE 61LD PILOT OPTIONAL: TYPE 112 RESTRICTOR INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE PILOT SUPPLY PRESSURE FIXED RESTRICTOR TYPE 1098-EGR WITH TYPE Y600AM PILOT AND TYPE MR95H PRESSURE SUPPLY REGULATOR Figure 2. Operational Schematics (continued)

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 6

Type 1098-EGR pressure on the actuator diaphragm escapes downstream through the bleed hole (Type 6351 pilot), bleed orifice (61 Series pilot), restriction (Types 6352 through 6354M pilots) or fixed 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 6350 Series pilots have an integral check valve that allows...

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 7

SPRING COLOR SPRING PART NUMBER Green Unpainted Red Yellow Black Yellow Red Blue Blue Green Red Yellow Blue Brown Green Green Stripe Yellow Blue Red Red Unpainted Yellow Green Light Blue Black 1. Without diaphragm limiter. 2. With diaphragm limiter. Table 3. Actuator Sizes and Maximum Pressures ACTUATOR TYPE Table 4. Maximum and Minimum Differential Pressures for Main Valve Selection BODY SIZE NPS SPRING PART NUMBER SPRING COLOR MAXIMUM ALLOWABLE DIFFERENTIAL PRESSURE(1)

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 8

Type 1098-EGR Table 5. Recommended Type MR95H Pressure Settings for Use with the Type Y600AM Pilot SUPPLY PRESSURE Type Y600AM Spring Color TYPE EGR SPRING COLOR Light Blue 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. 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...

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 9

TYPE Y600M OR 627-109 MONITORING PILOT INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE ATMOSPHERIC PRESSURE INTERMEDIATE PRESSURE Figure 3. Working Monitor System Table 6. Working Monitor Performance MONITORING PILOT INFORMATION Construction Type 161AYW pilot and 150 psig / 10.3 bar maximum allowable pilot inlet pressure Type 627-109 pilot and 1000 psi / 69 bar maximum allowable pilot inlet pressure Spring Part Number MINIMUM PRESSURE AT WHICH WORKING MONITOR REGULATOR CAN BE SET 3 in. w.c. / 7 mbar over normal distribution pressure 14 in. w.c. / 34 mbar over normal distribution pressure...

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 10

PILOT SUPPLY REGULATOR PILOT SUPPLY REGULATOR INLET PRESSURE INLET PRESSURE OUTLET PRESSURE OUTLET PRESSURE LOADING PRESSURE LOADING PRESSURE PILOT SUPPLY PRESSURE PILOT SUPPLY PRESSURE ATMOSPHERIC PRESSURE ATMOSPHERIC PRESSURE INTERMEDIATE PRESSURE INTERMEDIATE PRESSURE Figure 4. Downstream Wide-Open Monitor System 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 configuration: Type 1098‑EGR with Yellow Main Spring, Quick...

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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators - 11

TYPE 1098-EGR SIZE 70 REGULATOR WITH QUICK OPENING CAGE TYPE Y600AM AUXILIARY PILOT TYPE 6352 WORKING PILOT Figure 5. Boiler Fuel Configuration Table 7. Auxiliary Pilot Selection (Fast Stroke Dual Pilot) SPRING NUMBER SPRING COLOR Light Blue MINIMUM PRESSURE AT WHICH AUXILIARY PILOT CAN BE SET SPRING RANGE 1 in. w.c. / 2 mbar Under working pilot setpoint 6 in. w.c. / 14 mbar Under working pilot setpoint 8 in. w.c. / 21 mbar Under working pilot setpoint

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