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Instruction Manual
D103091X012
August 2019
Type EZL Pressure Reducing Regulator for
Low Pressure Applications
Introduction
Scope of the Manual
This manual provides installation, startup,
maintenance and parts ordering information for the
Type EZL pressure reducing regulator. Information on
other equipment used with this regulator is found in
separate manuals.
Figure 1. Type EZL Pressure Reducing Regulator
Product Description
Type EZL regulators are accurate pilot-operated,
pressure balanced and soft seated regulators. They
are designed for use in natural gas distribution
applications such as district regulating stations and
commercial/industrial meter sets. They provide low
differential, smooth, reliable operation, tight shutoff and
long life.
Type EZL
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Related Manuals for Emerson Fisher EZL
Summary of Contents for Emerson Fisher EZL
- Page 1 Instruction Manual Type EZL D103091X012 August 2019 Type EZL Pressure Reducing Regulator for Low Pressure Applications Figure 1. Type EZL Pressure Reducing Regulator Introduction Product Description Scope of the Manual Type EZL regulators are accurate pilot-operated, This manual provides installation, startup, pressure balanced and soft seated regulators.
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Page 2: Specifications
Type EZL Specifications The Specifications section lists the specifications for Type EZL pressure reducing regulator. Factory specifications for specific regulator constructions are stamped on the nameplate fastened to either the main actuator or the pilot spring case. Available Configuration Minimum Differential Pressure Type EZL: Pilot-operated pressure reducing MINIMUM DIFFERENTIAL regulator for low to high outlet pressure... -
Page 3: Monitoring Systems
Type EZL June 2015 Type EZL Type EZL with 6350 Series Pilot and Type P590 Pilot Supply Filter “C” PORT LOADING PRESSURE TYPE 6352 PILOT “D” PORT SENSE PRESSURE “A” PORT INLET PRESSURE P590 SERIES PILOT SUPPLY FILTER TYPE EZL MAIN VALVE E0944_06/2015 INLET PRESSURE INLET PRESSURE... - Page 4 Type EZL Type EZL August 2015 Type EZL with Type 61L Pilot SENSE PRESSURE INLET PRESSURE LOADING PRESSURE P590 SERIES PILOT SUPPLY FILTER TYPE 61L PILOT TYPE EZL MAIN VALVE E0959_08/2015 INLET PRESSURE INLET PRESSURE OUTLET PRESSURE OUTLET PRESSURE LOADING PRESSURE ATMOSPHERIC PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE...
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Page 5: All Installations
Type EZL Type EZL November 2015 Type EZL Downstream Wide-Open Monitor P590 SERIES PILOT SUPPLY FILTER TYPE 67C PILOT SUPPLY REGULATOR P590 SERIES PILOT SUPPLY FILTER TYPE 6352 PILOT TYPE 6352 PILOT TYPE EZL MAIN VALVE TYPE EZL MAIN VALVE INLET PRESSURE E0948_08/2015 OUTLET PRESSURE... - Page 6 Type EZL Type EZL August 2015 Type EZL Working Monitor 161EB SERIES PILOT P590 SERIES PILOT P590 SERIES SUPPLY FILTER PILOT SUPPLY FILTER TYPE 6352 PILOT TYPE 6352 PILOT TYPE EZL MAIN VALVE TYPE EZL MAIN VALVE INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE E0946_08/2015 INLET PRESSURE...
- Page 7 Type EZL 4. Pilots have a 1/4 in. NPT vent connection in the pneumatic loading of a 6350 or 61 Series pilot, spring case. To remotely vent gas from the spring make the loading piping connections to the case, remove the screened vent and connect 1/4 in.
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Page 8: Pilot Adjustment
Type EZL • Block valves isolate the regulator the upstream monitor pilot to the desired setpoint. Establish final desired downstream pressure by • Vent valves are closed adjusting the downstream pilot. • A bypass, if any, is in operation 6. After adjusting the pilot(s) to the desired pressure In all cases, check the control spring setting to make setting(s), slowly open the downstream block sure it is correct for the application. -
Page 9: Maintenance
Type EZL Maintenance 5. Remove the hex socket cap screws (key 33) and spring lock washers (key 32). Lift off the disk holder The regulator parts are subject to normal wear assembly (key 30) and disk retainer (key 31). and must be inspected periodically and replaced 6. - Page 10 Type EZL Table 3. Torque Specifications TORQUE SPECIFICATIONS, FT-LBS / N•m Indicator Fitting Stud Nuts Socket Head Cap Cap Screws Cap Screws Socket Head Cap Body Size (key 56) or (key 26) Screws (key 16) (keys 21 and 39) (key 6) Screws (key 33) (1)(2) Plug (key 38)
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Page 11: Pilot Maintenance
Type EZL Secure with stud bolts and nuts (keys 24 and 26). 5. Lubricate the O-ring (key 12B) and backup rings See Torque Specification table for proper torque. (key 76, 2 required). Place one back-up ring on the stem (key 54) followed by the O-ring and then 12. - Page 12 Type EZL TOP VIEW TOP VIEW LEGACY TRAVEL INDICATOR DETAIL IMPROVED TRAVEL INDICATOR DETAIL P1765 APPLY LUBRICANT (L) OR SEALANT (S) L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS 1. Lubricant and sealant must be selected such that they meet the temperature requirements. Figure 6.
- Page 13 Type EZL b. Avoid wrinkling the diaphragms when replacing 3. Remove the diaphragm assembly (key 7) and the diaphragm case and spring case. inspect the diaphragm. c. Replace the diaphragm case, carefully working 4. To gain access to the stem guide seal O-ring, the upper relay diaphragm (key 14) into the remove and inspect the stem guide seal assembly recess in the diaphragm case.
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Page 14: Parts Ordering
Type EZL Parts Ordering Description Part Number Body (continued) Each Type EZL regulator is assigned a serial number, 3 in. / DN 80 which can be found on the nameplate. Refer to the Cast Iron number when contacting your local Sales Office for CL125 FF GE10689X012 Steel... - Page 15 Type EZL Type EZL Main Valve Description Part Number (Figure 7) (continued) 30* Disk Holder Assembly 2 in. / DN 50 Nitrile (NBR) M0279110X12 Description Part Number Fluorocarbon (FKM) M0281870X12 3 and 4 in. / DN 80 and 100 Pipe Plug (up to 3 required), All sizes 1A767524662 Nitrile (NBR) M0276830X12...
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Page 16: Mounting Parts
Type EZL Types 6352, 6353, 6354L, 6354M and Mounting Parts 6354H Pilots (Figure 8) (continued) Standard Single Pilot Configuration for Mounting Type 6352, 6353 or 6354 Description Part Number Diaphragm Assembly Description Part Number Type 6352, Nitrile (NBR) 15A6216X012 Type 6353, Nitrile (NBR) 15A6216X022 Pipe Nipple 1C782526012... - Page 17 Type EZL Types 6352, 6353, 6354L, 6354M and 61 Series Pilots (Figure 9) (continued) 6354H Pilots (Figure 8) (continued) Description Part Number Control Spring Description Part Number Type 61L Pipe Nipple 0.25 to 2 psig / 0.02 to 0.14 bar 1B886327022 For standard and corrosive service 1C488226232...
- Page 18 Type EZL Table 4. 161EBM Series Monitor Pilot Part Numbers (keys 7, 8, 9, 10 and 11, Figure 10) CONTROL SPRING RANGE IN psig / bar AND SPRING COLOR CODE 5 to 15 / 10 to 40 / 30 to 75 / 70 to 140 / 130 to 200 / 200 to 350 /...
- Page 19 Type EZL DETAIL A.1 DETAIL A.2 4 IN. / DN 100 BODY SIZE ONLY 2 AND 3 IN. / DN 50 AND 80 BODY SIZES ONLY GE10987 APPLY LUBRICANT (L) OR SEALANT (S) L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS S3 = MULTI-PURPOSE POLYTETRAFLUOROETHYLENE (PTFE) THREAD SEALANT...
- Page 20 Type EZL GE10987-8 Figure 7. Type EZL Main Valve Assembly (continued) 35A8889 35A6236 DETAIL OF TYPE 6354M OR 6354H PILOT COMPLETE TYPE 6352, 6353 OR 6354L PILOT Figure 8. Types 6352 through 6354H Pilot Assemblies...
- Page 21 Type EZL 30A6327 20A6328 DETAIL OF CAPPED ADJUSTING SCREW OPTION DETAIL OF HANDWHEEL OPTION TYPE 61L PILOT 20A6326 Figure 9. Type 61L Pilot Assembly...
- Page 22 Type EZL SENSE (CONTROL) PORT BLEED (EXHAUST) PORT IN PORT 30B4395-E 37B1208 APPLY LUBRICANT (L) L1 = ANTI-SEIZE LUBRICANT L2 = EXTREME LOW TEMPERATURE BEARING GREASE 1. Lubricants must be selected such that they meet the temperature requirements. Figure 10. Type 161EBM Pilot Assembly...
- Page 23 Type EZL A7008 Figure 11. P590 Series Filter OPTIONAL DRAIN VALVE STANDARD BODY EXTENDED BODY A7013 Figure 12. Type 252 Filter...
- Page 24 Technologies, Inc. All rights reserved. 08/19. Emerson Automation Solutions The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher™ is a mark owned by Fisher Controls International LLC, a business...