Emerson EZH and EZHSO Series Pressure Reducing Regulators Instruction Manual

Standard Pilot SystemsInstruction ManualNTAPIL0805June 2010Francel Pilot SystemsINTRODUCTIONScope of ManualThis manual provides instructions for opera

10Standard PilotsRemove impulse (key 3)• Check impulse element –Control tightshut joints –Pilot Body (Figure 13)Remove nozzle(s) (pilot block(s)) (key

11Standard PilotsFigure 9. Manometric BoxFigure 13. Pilot System Body TypesA96BSL 85 Pre-expansion BodyBSL 85 Pilot BodyCompact Pilot Body Figure 10

12Standard PilotsTable 3. Standard ConnectionsREGULATORSBERTIN EZ NOMPNOEZHFO, EZHSOBERTIN EZMPEZHMPSK3000K1000EZRAssembly TypeStand-alone X X X XMoni

13Standard PilotsOPTIONSRPE (Electric Heater)The RPE is used for reheating gas supplying pressure reducing regulator pilots. It avoids the inconvenien

14Standard PilotsOperating Instructions and Regulation OptimizationTable 7. Operating Instructions and Regulation OptimizationUNIT OR PARAMETER INDIC

15Standard PilotsPILOT SETTING RANGESTable 8. Distribution Regulators RangeA108DISTRIBUTION REGULATORSPd (bar) PRE-EXPANSION RELAY PILOTAGEMANOMETER

16Standard PilotsPILOT SETTING RANGES (continued)Table 9. Transmission Regulator RangeA109TRANSMISSION REGULATORSPd (bar)PRE-EXPANSION RELAY PILOT SY

17Standard PilotsPILOT SETTING RANGES (continued)Table 10. Transmission Regulators – Working MonitorA110Table 11. Pi Range for Defi nition of Manomet

18Standard PilotsPILOT SETTING RANGES (continued)Table 11. Transmission CPV RegulatorsA119TRANSMISSION REGULATORSPd (bar)PRE-EXPANSION RELAY PILOT SY

19Standard PilotsSPARE PARTSTable 13. Spare Parts (Figures 15 to 19)KEY DESCRIPTIONDIAPHRAGM BMP SIZE BELLOWS BMP SIZE71 162 114 114 DA 114 DR 114 MD

2Standard PilotsTable 2. Setting Ranges for Manometric BoxesSIZESPRING SETTING RANGE Wds*PSDPILOT SYSTEMWire (mm)Reference Min Max Pre-expansion Pi

20Standard PilotsSPARE PARTS (continued)Manometric BoxesFigure 15. BMP 071, 114, 162Figure 16. BMP 236, 222, 227A113a92105138111312467A113b925138111

21Standard PilotsSPARE PARTS (continued)NOZZLE TYPE PRE-EXPANSION RELAY PILOT 3.2 (1 O-ring)Transmission Applications 25 to 80 barCircularmarkCircula

22Standard PilotsTable 15. Adjustment Tap Spare PartsDESCRIPTION KEY. CODEBody 24 144491O-ring 25 400506Masking 26 119946Square spanner 27 46150860°

23Standard PilotsTable 17. Filter Spare PartsA117aTable 18. Relief Valve CodesFigure 22. FilterA117b363744453938404145444342DESCRIPTION KEY. CODESPS

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3Standard PilotsDESCRIPTION Figure 3. Body LabellingBody Description (Figure 3)1. Pilot feed2. Pilot impulse line (IP)3. Pre-expansion manometer4. P

4Standard PilotsPRINCIPLE OF OPERATIONHard Trim Pilot SystemsPrinciple of Operation based on Compact Pilot System Figure 4. Principle of Operation wi

5Standard PilotsPuPdR1PMRM1F1RP1PR1RP IPUpperDiaphragmLower DiaphragmIS2010212213251112231014151626Figure 5. Type EZH Regulator with Type BSL 85 Pilo

6Standard PilotsFigure 6a. Type EZHFO Regulator with Type BSL 85 Pilot SystemHard Trim Pilot Systems (continued)Principle of operation based on BSL 8

7Standard PilotsHard Trim Pilot Systems (continued)Figure 6b: the regulator spring tries to open, the “Fail to Open” mode is also managed by the regul

8Standard PilotsThe regulator opens with a decrease (unloading) of the modulated pressure (Pm).OpeningThe fl ow demand increases, the decrease in the o

9Standard PilotsBoot Trim Pilot Systems (continued)Principle of operation based on BSL 85 Pilot SystemIPRPPdISCNALBFERME==ETIHWCLSODECNALBFERME==ETIHW