Emerson LR128 Manual de Instruções

Type LR128D103578X012Instruction ManualNovember 2014www.fisherregulators.comType LR128 Relief Valve or Backpressure Liquid RegulatorFigure 1. Type LR1

Type LR12810Table 6. Type LR128 Main Valve Minimum Differential Pressures(1)MAIN VALVE BODY SIZEDIAPHRAGMMINIMUM DIFFERENTIAL, PERCENT OF CAPACITYFor

Type LR12811Table 8. Troubleshooting GuideISSUE POSSIBLE SOLUTION (SEE FIGURES 7 AND 14 FOR PARTS LOCATION) Unit does not provide tight shutoff when

Type LR12812B2615INDICATOR PROTECTOR (KEY 22)HEX NUTS(KEY 4)BONNET(KEY 2)O-RING(KEY 28)MAIN SPRING(KEY 12)CAP SCREWS (KEY 3)INDICATOR COVER (KEY 21)IN

Type LR1281349B6019_AMAIN VALVE ASSEMBLY FOR 1 IN. / DN 25 BODY SIZE Figure 7. Type LR128 Main ValveAPPLY LUBRICANT(1):L1 = LITHIUM POLYMER TYPE LUBRI

Type LR1281448B2142_CMAIN VALVE ASSEMBLY FOR 2, 3 AND 4 IN. / DN 50, 80 AND 100 BODY SIZES Figure 7. Type LR128 Main Valve (continued)APPLY LUBRICANT

Type LR12815Figure 8. Type LR128 Nameplate and Flow ArrowFigure 10. Type LR128 Cage O-ring PlacementFigure 11. Type LR128 Travel Indicator Plug Option

Type LR12816Diaphragm and Plug Assembly MaintenanceThe diaphragm and plug assembly can be replaced as a single unit (a diaphragm cartridge) or individ

Type LR12817!WARNINGAvoid personal injury or damage to property from sudden release of pressure or uncontrolled process uid. Before starting to disas

Type LR12818Type MR98H Pilot Maintenance!WARNINGTo avoid personal injury, property damage or equipment damage caused by sudden release of pressure or

Type LR12819Figure 14. Type MR98H Pilot AssemblyL2 1517113129L2 10L2(2)161228586329L2735814L2L2L2L1GF04916APPLY LUBRICANT / SEALANT(1):L1 = GENERAL PU

Type LR1282IntroductionScope of the ManualThis Instruction Manual provides installation, startup, adjustment, maintenance and parts ordering informati

Type LR12820Figure 16. Type 112 Restrictor20B4393-EAPPLY LUBRICANT / SEALANT(1):S = THREAD SEALANTL = ANTI-SEIZE LUBRICANT1. Lubricant and sealant mus

Type LR12821CRITERIA17E68 NITRILE (NBR) (STANDARD)17E97 NITRILE (NBR) 17E88 FLUOROCARBON (FKM)Liquid Temperature -20 to 150°F / -29 to 66°C 0 to 150°F

Type LR12822Figure 18. Standard Type LR128 with Type MR98H Pilot and Type 112 Restrictor4529TYPE MR98H PILOTTYPE 112RESTRICTORERAA031094529

Type LR12823ERAA03110Figure 19. Type LR128 with Type MR98H Pilot and Type 112 Restrictor with Pre-piped Pilot SupplyTYPE 112RESTRICTOR456162602959TYPE

Type LR12824Key Description Part NumberParts ListMain Valve (Figures 6 to 13)Key Description Part Number Parts Kits Diaphragm Car

Type LR12825BODY SIZEBODY MATERIAL END CONNECTION STYLE PART NUMBERIn. DN1 25WCC SteelNPT GE11581X012SWE GE11440X012CL150 RF GE11583X012CL300 RF GE

Type LR1282611 Bottom Plug, Stainless steel 1 in. / DN 25 body 19B2407X012 2 in. / DN 50 body 18B2127X012 3 in. / DN 80 body 18B8513X012

Type LR12827* Recommended spare part.Type MR98H Pilot (Figure 14)Key Description Part Number Parts Kit (includes keys: 3, 4, 12, 29, 59 and 63)

Type LR128©Emerson Process Management Regulator Technologies, Inc., 2012, 2014; All Rights ReservedThe Emerson logo is a trademark and service mark of

Type LR1283Figure 2. Type LR128 Operational SchematicINLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSURELOADING PRESSURETYPE LR128 WITH TYPE MR98H PILOT

Type LR1284Pilot Type DescriptionType MR98H – High-pressure relief pilot for 25 to 375 psig / 1.7 to 25.9 bar set pressures. Designed to handle inlet

Type LR1285Table 1. Type LR128 Main Valve Body Sizes, End Connection Styles, Structural Design Ratings and Maximum Operating Inlet Pressures(1)MAIN VA

Type LR1286NoteThe Type LR128 internal inlet strainer is intended to prevent occasional large particles from entering the main valve. If the owing me

Type LR1287RELIEF PRESSURE CONTROLBACKPRESSURE CONTROLFigure 3. Typical Type LR128 Installation SchematicA - VENT (TO DOWNSTREAM PIPING)C - TO TYPE LR

Type LR1288PILOT SUPPLY CONNECTION: 1/4 NPT PIPE CONNECTS TO UPSTREAM PILOT SUPPLY TAPLOADING CONNECTION: 1/4 NPT PIPE CONNECTS TO TYPE LR128 DIAPHRAG

Type LR1289W4559_1RESTRICTOR ADJUSTMENTFigure 5. Restrictor Adjustment and Restrictor Setting GuideRESTRICTOR SETTING GUIDETYPE 112 RESTRICTOR ADJUSTM