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Bulletin 71.4:MR108
October 2014
D103257X012
www.fisherregulators.com
Contents
Introduction ................................................................ 3
Specications ............................................................. 2
Features ..................................................................... 3
Principle of Operation ................................................. 3
Overpressure Condition ............................................ 6
Installation .................................................................. 6
Applications................................................................. 6
Universal NACE Compliance .................................... 7
Ordering Information .................................................. 15
Ordering Guide ........................................................ 15
Features
• LargeFlow
• Stability
• FastResponse
• SteelandStainlessSteelConstructionsMeet
API614Requirements
•AvailableConstructionstoMeetNACEMR0175-
2003andMR0103RequirementsforSourGas
ServiceCapability
• MultipleTrimMaterialsAvailable
• ANSI/FCI70-3-2004ClassVIShutoff
• MultipleEndConnectionOptions
• P
1
= P
2
onHigh-PressureActuator
• SuitableforHigh-TemperatureApplicationsup
to250°F/121°C
• DrainValve
• Pressure-LoadedActuator
• Bleedvalve(forHigh-PressureActuatoronly)
TypeMR108Direct-Operated
BackpressureRegulators
TYPEMR108WITH
LOW-PRESSUREACTUATOR
Figure 1. Type MR108 Direct-Operated Backpressure Regulators
TYPEMR108WITH
HIGH-PRESSUREACTUATOR
P1202 P1203
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Resumo do Conteúdo

Página 1 - BackpressureRegulators

Bulletin 71.4:MR108October 2014D103257X012www.fisherregulators.comContentsIntroduction ...

Página 2

Bulletin 71.4:MR10810Table 9. Typical Air Capacities with Quick Opening Cage - Setpoint Made at 10% Flow (For Type MR108 High-Pressure Actuator)SPRING

Página 3

Bulletin 71.4:MR10811Table 10. Typical Water Capacities with Quick Opening Cage - Setpoint Made at 10% Flow (For Type MR108 Low-Pressure Actuator)Tabl

Página 4

Bulletin 71.4:MR10812Table 11. Typical Water Capacities with Quick Opening Cage - Setpoint Made at 10% Flow (For Type MR108 High-Pressure Actuator)SPR

Página 5

Bulletin 71.4:MR10813 ERAA00137Figure 4. Type MR108 with Low-Pressure Actuator DimensionsDIMENSIONSBodySizeIn./mmAD G RNPS DN NPTCL125FF/CL150R

Página 6

Bulletin 71.4:MR10814DIMENSIONSBodySizeIn./mmAD G RNPS DN NPTCL125FF/CL150RFCL250RF/CL300RFCL600RF PN16/25/40RF1 25 8.25 / 210 7.25 / 184

Página 7

Bulletin 71.4:MR10815OrderingInformationUse the Specications section on page 2 and carefully review the description to the right of each specicatio

Página 8

Bulletin 71.4:MR108©Emerson Process Management Regulator Technologies, Inc., 2010, 2014; All Rights ReservedThe Emerson logo is a trademark and servic

Página 9

Bulletin 71.4:MR1082SpecicationsThe Specications section on this page provides the ratings and other specications for the Type MR108. The following

Página 10 - Bulletin 71.4:MR108

Bulletin 71.4:MR1083IntroductionThe Type MR108 regulators are direct-operated, backpressure, high-capacity, multi-purpose regulators. They are designe

Página 11

Bulletin 71.4:MR1084Figure 2. Type MR108 Backpressure Regulator Operational SchematicTYPEMR108WITHHIGH-PRESSUREACTUATORTYPEMR108WITHLOW-PRESSUR

Página 12

Bulletin 71.4:MR1085Table 3. Construction MaterialsPART STANDARD OPTIONALBody WCC Steel(1)Cast Iron, CF8M, CF3M Stainless steelBody Flange WCC Steel(

Página 13

Bulletin 71.4:MR1086with actuator on the side, however, this could result in premature wear of parts. Orientation of the two vents should always be do

Página 14

Bulletin 71.4:MR1087 • Auxiliary pump (Pump 2) and lter system is brought into operation while main pump is in operation. • Auxiliary pump ramp u

Página 15

Bulletin 71.4:MR1088SPRINGRANGE, PARTNUMBER, COLORCODERELIEFPRESSURESETTINGCv at % BUILDUPNPS1/DN25Body NPS2/DN50Body NPS3/DN80B

Página 16

Bulletin 71.4:MR1089Table 8. Typical Air Capacities with Quick Opening Cage - Setpoint Made at 10% Flow (For Type MR108 Low-Pressure Actuator)SPRINGR

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