Emerson MR98 Datasheet Page 1

Bulletin 71.4:MR98January 2015D103743X012www.fisherregulators.comFigure 1. Typical MR98 Series Backpressure Regulators, Relief and Differential Relief

Bulletin 71.4:MR9810Typical relieving capacities in lbs per hour and kilogram per hour of saturated steam are shown in Tables 9, 14 and 19.Tables 7, 8

Bulletin 71.4:MR9811Table 4. MR98 Series Trim MaterialsTRIM NUMBERSEATORIFICE/ VALVE PLUGVALVE PLUG GUIDESTEM/STEM GUIDE BOTTOM PLUG WASHER1 416 Stain

Bulletin 71.4:MR9812- continued -Table 7. Water Relief Capacities in Gallons per Minute / L/min, Types MR98L and MR98LD with Elastomer DiaphragmNOMINA

Bulletin 71.4:MR9813Table 7. Water Relief Capacities in Gallons per Minute / L/min, Types MR98L and MR98LD with Elastomer Diaphragm (continued)NOMINAL

Bulletin 71.4:MR9814- continued -Table 8. Water Relief Capacities in Gallons per Minute / L/min, Types MR98L and MR98LD with Metal DiaphragmNOMINAL BO

Bulletin 71.4:MR9815NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, p

Bulletin 71.4:MR9816Table 9. Steam Relief Capacities in Lbs per Hour / kg/h, Types MR98L and MR98LD with Metal Diaphragm Only- continued -NOMINAL BODY

Bulletin 71.4:MR9817NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, ps

Bulletin 71.4:MR9818Table 10. Air Relief Capacities in SCFH / Nm3/h, Types MR98L and MR98LD with Elastomer DiaphragmNOMINAL BODY SIZE, In. / DNSPRING

Bulletin 71.4:MR9819NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, p

Bulletin 71.4:MR9821. The pressure/temperature limits in this Bulletin and any applicable standard limitation should not be exceeded.2. Loading pressu

Bulletin 71.4:MR9820- continued -Table 11. Air Relief Capacities in SCFH / Nm3/h, Types MR98L and MR98LD with Metal DiaphragmNOMINAL BODY SIZE, In. /

Bulletin 71.4:MR9821NOMINAL BODY SIZE, In. / DNSPRINGRELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, psi

Bulletin 71.4:MR9822- continued -Table 12. Water Relief Capacities in Gallons per Minute / L/min, Types MR98H and MR98HD with Elastomer DiaphragmNOMIN

Bulletin 71.4:MR9823NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, ps

Bulletin 71.4:MR9824- continued -Table 13. Water Relief Capacities in Gallons per Minute / L/min, Types MR98H and MR98HD with Metal DiaphragmNOMINAL B

Bulletin 71.4:MR9825NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, ps

Bulletin 71.4:MR9826- continued -Table 14. Steam Relief Capacities in Lbs per Hour / kg/h, Types MR98H and MR98HD with Metal Diaphragm OnlyNOMINAL BOD

Bulletin 71.4:MR9827Table 14. Steam Relief Capacities in Lbs per Hour / kg/h, Types MR98H and MR98HD with Metal Diaphragm Only (continued)NOMINAL BODY

Bulletin 71.4:MR9828Table 15. Air Relief Capacities in SCFH / Nm3/h, Types MR98H and MR98HD with Elastomer DiaphragmNOMINAL BODY SIZE, In. / DNSPRING

Bulletin 71.4:MR9829NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, ps

Bulletin 71.4:MR983pusher post assembly provides positive guiding for improved shutoff.  Small size allows

Bulletin 71.4:MR9830Table 16. Air Relief Capacities in SCFH / Nm3/h, Types MR98H and MR98HD with Metal DiaphragmNOMINAL BODY SIZE, In. / DNSPRING REL

Bulletin 71.4:MR9831NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGECOLOR CODERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, ps

Bulletin 71.4:MR9832NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, psig / bar30

Bulletin 71.4:MR9833Table 18. Water Relief Capacities in Gallons per Minute / L/min, Types MR98HH and MR98HHD with Metal DiaphragmNOMINAL BODY SIZE, I

Bulletin 71.4:MR9834- continued -NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING,

Bulletin 71.4:MR9835NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, psig / bar30

Bulletin 71.4:MR9836NOMINAL BODY SIZE, In. / DNSPRING RELIEF PRESSURE RANGERELIEF PRESSURE SETTINGPRESSURE BUILD-UP OVER RELIEF SETTING, psig / bar30

Bulletin 71.4:MR9837Figure 4. Dimensions (See Table 22)*Only when specied.In. / mmD (MAX)1/4 NPT*NPT OR SWEBØCATEE HANDLE DETAIL FOR ALL SIZES EXCEPT

Bulletin 71.4:MR9838D (MAX)1/4 NPT*NPT OR SWEBØCATEE HANDLE DETAIL FOR ALL SIZES EXCEPT 1/2 IN. / DN 15GFLANGED (MAX)B14.00 / 355.6ØC1/4 NPT*NPT OR SW

Bulletin 71.4:MR9839Ordering Guide (continued)Body Size (Select One)  1/4 NPT(1)  1/2 in. / DN 15  3/4 in. / DN 20  1 in. / DN 25   1-1/2

Bulletin 71.4:MR984BODY SIZE BODY CONSTRUCTION END CONNECTION STYLEBODY MATERIALGray Cast IronWCC or LCC SteelCF8M Stainless Steel(1)CF3M Stainless St

Bulletin 71.4:MR98Bulletin 71.4:MR98©Emerson Process Management Regulator Technologies, Inc., 2013, 2015; All Rights ReservedThe Emerson logo is a tra

Bulletin 71.4:MR985Table 2. Types MR98H, MR98HD, MR98HH and MR98HHD Regulators Body ConstructionsBODY SIZE BODY CONSTRUCTION END CONNECTION STYLEBODY

Bulletin 71.4:MR986Table 2. Types MR98H, MR98HD, MR98HH and MR98HHD Regulators Body Constructions (continued)BODY SIZE BODY CONSTRUCTION END CONNECTIO

Bulletin 71.4:MR987Table 3. MR98 Series Body Sizes, Pressure Ranges and Spring InformationTYPEBODY SIZECONTROL PRESSURE RANGE(1)SPRING WIRE DIAMETERS

Bulletin 71.4:MR988Principle of OperationRelief or backpressure valves respond to changes in upstream pressure. Pressure changes register under the di

Bulletin 71.4:MR989FOR TYPES MR98HD, MR98HHD AND MR98LD WITH METAL DIAPHRAGMS, ASSEMBLE DIAPHRAGM GASKETS UNDER AND ABOVE THE METAL DIAPHRAGMS AS SH