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Type EZL

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.

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.

Figure 1.

Type EZL Pressure Reducing Regulator

Summary of Contents for Fisher EZL

Page 1: ...gulator Information on other equipment used with this regulator is found in separate manuals 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 operati...

Page 2: ...to 200 200 to 350 0 34 to 1 0 0 69 to 2 8 2 1 to 5 2 4 8 to 9 6 9 0 to 13 8 13 8 to 24 1 White Yellow Black Green Blue Red 17B1260X012 17B1262X012 17B1259X012 17B1261X012 17B1263X012 17B1264X012 1 Without diaphragm limiter 2 With diaphragm limiter 2 Type EZL Specifications The Specifications section lists the specifications for Type EZL pressure reducing regulator Factory specifications for specif...

Page 3: ...he downstream control line and acts on the pilot E0944_06 2015 Figure 2 Type EZL with Type 6352 Pilot diaphragm This pressure exceeds the pilot spring setting and moves the diaphragm closing the orifice The loading pressure acting on the main diaphragm bleeds to the downstream system through a bleed restriction in the pilot Monitoring Systems Monitoring regulation is overpressure protection by con...

Page 4: ... with a pilot supply regulator set to 5 psig 0 34 bar plus the monitor minimum differential pressure above the working TYPE EZL MAIN VALVE E0959_08 2015 Figure 3 Type EZL with Type 61L Pilot SENSE PRESSURE regulator pressure setting Since the pilot on the monitoring regulator is wide open during normal operation the pilot supply regulator prevents differential check valve chatter on the monitoring...

Page 5: ...service conditions could exceed the limits given in the Specification section and on the appropriate nameplate or where conditions exceed any rating of the adjacent piping or piping connections To avoid such injury or damage provide pressure relieving or pressure limiting devices to prevent service conditions from exceeding those limits Also be sure the installation is in compliance with all appli...

Page 6: ...tweld end connections remove trim before welding and make sure to use approved welding practices Use approved piping procedures when installing the regulator WARNING A regulator may vent some gas to the atmosphere In hazardous or flammable gas service vented gas may accumulate causing personal injury death or property damage due to bursting of pressure retaining parts Vent a regulator in hazardous...

Page 7: ...lt the appropriate instruction manual for installation of an optional pneumatic or electric remote control drive unit For optional remote pneumatic loading of a 6350 or 61 Series pilot make the loading piping connections to the 1 4 in NPT vent connection Wide Open Monitor Regulator Figure 4 1 Follow the procedures in the All Installations section and then continue with step 2 of this section 2 Con...

Page 8: ...r pilot Type PRX 125 Drive in the adjusting screw of the downstream pilot Adjust the upstream monitor pilot to the desired setpoint Establish final desired downstream pressure by adjusting the downstream pilot 6 After adjusting the pilot s to the desired pressure setting s slowly open the downstream block valve wide open 7 Close the bypass valve if used Pilot Adjustment The adjustment of the regul...

Page 9: ...g before placing in the sleeve adaptor key 27 7a On the 2 and 3 in DN 50 and 80 sizes remove the seat ring key 2 spring washer key 72 and O ring key 34 see Figure 7 Detail A 2 Inspect the O ring for damage or wear replace if necessary 7b On the 4 in DN 100 size the seat ring key 2 can be moved out of the way and the o ring key 75 can be removed without removing the intermediate flange key 25 For e...

Page 10: ...2 Lift off the disk holder assembly key 30 and disk retainer key 31 7 Slide the sleeve key 14 out of the lower actuator casing key 5 and slide the outlet plate key 19 off of the sleeve Check the sleeve for scratches burrs or other damage and replace if necessary 8 Inspect the lower actuator casing key 5 O ring key 9 anti friction split rings key 8 and anti friction ring key 4 for damage or wear If...

Page 11: ...d the stem for wear and replace if necessary 4 Insert the travel indicator stem key 54 and spring collet key 57 back into the diaphragm head groove Replace the indicator fitting key 56 and O ring key 70 and tighten with a referenced torque of 20 ft lbs 27 1 N m 5 Lubricate the O ring key 12B and backup rings key 76 2 required Place one back up ring on the stem key 54 followed by the O ring and the...

Page 12: ...eads keys 16 and 17 The projecting prong in the body may be used as the restraining member to keep the yoke from turning while removing the nuts Also inspect the O ring key 12 and replace any parts as necessary 5 Take the yoke key 4 and attached parts out of the body to examine the disk holder assembly key 9 Remove the relay orifice key 8 to check for clogging and replace if necessary 6 To replace...

Page 13: ... the body assembly key 1 Remove the control spring seat key 8 the control spring key 9 and if used the diaphragm limiter key 10 3 Remove the diaphragm assembly key 7 and inspect the diaphragm 4 To gain access to the stem guide seal O ring remove and inspect the stem guide seal assembly key 19 and if damaged replace the complete assembly Inspect the outer O ring key 22 replace if necessary 5 Instal...

Page 14: ...RF Standard GE10699X012 Tapped inlet and outlet 14B5835X032 CL300 RF Standard GE10700X012 Tapped inlet and outlet 14B5835X042 CL600 RF Standard GE10701X012 Tapped inlet and outlet 14B5835X052 BWE Schedule 40 GE10702X012 4 in DN 100 Cast iron CL125 FF GE10707X012 Steel CL150 RF Standard GE10835X012 Tapped inlet and outlet 14B5836X032 CL300 RF Standard GE10839X012 Tapped inlet and outlet 14B5836X042...

Page 15: ...2 29 O ring 2 in DN 50 M6020112X12 3 and 4 in DN 80 and 100 M6020147X12 Key Description Part Number 30 Disk Holder Assembly 2 in DN 50 Nitrile NBR M0279110X12 Fluorocarbon FKM M0281870X12 3 and 4 in DN 80 and 100 Nitrile NBR M0276830X12 Fluorocarbon FKM M0282120X12 31 Disk Retainer 2 in DN 50 100 Capacity M0272750X12 80 Capacity M0297340X12 50 Capacity M0297430X12 30 Capacity M0297440X12 3 and 4 i...

Page 16: ...rile NBR 15A6216X012 Type 6353 Nitrile NBR 15A6216X022 Type 6353 Fluorocarbon FKM 15A6216X092 Type 6353 Fluorocarbon FKM 15A6216X162 Type 6354 Neoprene CR 15A6216X032 Type 6354 Fluorocarbon FKM 15A6216X152 6 Control Spring Type 6352 2 in w c to 2 psig 5 to 140 mbar 14A9672X012 2 to 10 psig 0 14 to 0 69 bar Black 14A9673X012 DVGW 4 to 10 psig 0 30 to 0 69 bar 14A9673X012 Type 6353 3 to 40 psig 0 21...

Page 17: ...rd 1C216032992 Pressure loaded capped adjusting screw 1F6635X0012 61 Series Pilots Figure 9 continued Key Description Part Number 7 Control Spring Type 61L 0 25 to 2 psig 0 02 to 0 14 bar 1B886327022 1 to 5 psig 0 07 to 0 34 bar 1J857827022 2 to 10 psig 0 14 to 0 69 bar 1B886427022 5 to 15 psig 0 34 to 1 0 bar 1J857927142 10 to 20 psig 0 69 to 1 4 bar 1B886527022 Type 61HP 15 to 45 psig 1 0 to 3 1...

Page 18: ...es Filter Figure 11 Key Description Part Number 1 Filter Body Type P594 1 Brass 1E312414012 Type P593 1 Aluminum 1E312409012 2 Filter Element Cellulose 1E312606992 3 Filter Head Type P594 1 Brass 1E312514012 Type P593 1 Aluminum 1E312509012 4 Machine Screw Type P594 1 Brass 1J500218992 Type P593 1 Aluminum 1J500209012 5 Washer 2 required Type P594 1 Brass 1J500018992 Type P593 1 Aluminum 1J5000100...

Page 19: ...T FOR NUTS AND BOLTS S2 ANAEROBIC METHACRYLATE SEALANT FOR THREADS S3 MULTI PURPOSE POLYTETRAFLUOROETHYLENE PTFE THREAD SEALANT 1 Lubricant and sealants must be selected such that they meet the temperature requirements A 2 1 72 22 23 24 25 34 26 6 27 28 29 30 31 32 33 34 32 33 21 20 19 18 17 16 15 8 9 10 8 4 14 13 3 4 5 6 7 8 9 8 11 L1 L1 L1 L1 S3 L1 L1 L1 S1 L1 L1 L1 L1 L1 L1 L1 L1 S1 S1 L1 L1 L1...

Page 20: ...blies COMPLETE TYPE 6352 6353 OR 6354L PILOT 35A6236 35A8889 DETAIL OF TYPE 6354M OR 6354H PILOT GE10987 8 Figure 7 Type EZL Main Valve Assembly continued 37 36 43 39 60 37 59 35 23 11 10 14 20 22 15 13 16 19 21 12 17 9 2 7 6 5 8 4 1 3 20 Type EZL ...

Page 21: ...e 9 Type 61L Pilot Assembly DETAIL OF CAPPED ADJUSTING SCREW OPTION 20A6328 DETAIL OF HANDWHEEL OPTION 30A6327 1 35 40 34 33 43 28 5 6 44 35 28 1 13 3 26 11 50 25 15 17 22 19 27 1 28 16 14 24 4 10 12 9 8 18 6 5 7 20 2 21 Type EZL ...

Page 22: ...SEIZE LUBRICANT L2 EXTREME LOW TEMPERATURE BEARING GREASE 1 Lubricants must be selected such that they meet the temperature requirements 9 8 2 1 3 6 4 7 9 8 10 13 14 4 6 1 1 1 1 12 11 18 15 17 16 22 19 11 12 10 7 L L L3 L2 L2 37B1208 30B4395 E 1 22 19 L2 11 16 17 18 15 L2 L1 12 38 13 8 2 1 3 7 4 6 9 22 Type EZL ...

Page 23: ...Figure 11 P590 Series Filter A7008 A7013 Figure 12 Type 252 Filter EXTENDED BODY STANDARD BODY OPTIONAL DRAIN VALVE 6 5 2 5 7 1 4 3 7 3 4 5 1 8 2 6 23 Type EZL ...

Page 24: ...k owned by Fisher Controls International LLC a business of Emerson Automation Solutions The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are...

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