Masoneilan* 78400/18400 Series - Valvenco

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GE Oil & GasMasoneilan*78400/18400 SeriesLincolnLog* High Pressure Anti-CavitationControl ValveInstruction Manual (Rev. C)GE Data Classification : Public

THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT PROJECT-SPECIFIC REFERENCEINFORMATION IN ADDITION TO THE CUSTOMER/OPERATOR’S NORMAL OPERATION AND MAINTENANCEPROCEDURES. SINCE OPERATION AND MAINTENANCE PHILOSOPHIES VARY, GE (GENERAL ELECTRIC COMPANYAND ITS SUBSIDIARIES AND AFFILIATES) DOES NOT ATTEMPT TO DICTATE SPECIFIC PROCEDURES, BUT TOPROVIDE BASIC LIMITATIONS AND REQUIREMENTS CREATED BY THE TYPE OF EQUIPMENT PROVIDED.THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL UNDERSTANDING OF THEREQUIREMENTS FOR SAFE OPERATION OF MECHANICAL AND ELECTRICAL EQUIPMENT IN POTENTIALLYHAZARDOUS ENVIRONMENTS. THEREFORE, THESE INSTRUCTIONS SHOULD BE INTERPRETED AND APPLIED INCONJUNCTION WITH THE SAFETY RULES AND REGULATIONS APPLICABLE AT THE SITE AND THE PARTICULARREQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT AT THE SITE.THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT NOR TOPROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH INSTALLATION, OPERATIONOR MAINTENANCE. SHOULD FURTHER INFORMATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISEWHICH ARE NOT COVERED SUFFICIENTLY FOR THE CUSTOMER/OPERATOR'S PURPOSES THE MATTER SHOULD BEREFERRED TO GE.THE RIGHTS, OBLIGATIONS AND LIABILITIES OF GE AND THE CUSTOMER/OPERATOR ARE STRICTLY LIMITED TOTHOSE EXPRESSLY PROVIDED IN THE CONTRACT RELATING TO THE SUPPLY OF THE EQUIPMENT. NO ADDITIONALREPRESENTATIONS OR WARRANTIES BY GE REGARDING THE EQUIPMENT OR ITS USE ARE GIVEN OR IMPLIED BYTHE ISSUE OF THESE INSTRUCTIONS.THESE INSTRUCTIONS ARE FURNISHED TO THE CUSTOMER/OPERATOR SOLELY TO ASSIST IN THE INSTALLATION,TESTING, OPERATION, AND/OR MAINTENANCE OF THE EQUIPMENT DESCRIBED. THIS DOCUMENT SHALL NOT BEREPRODUCED IN WHOLE OR IN PART TO ANY THIRD PARTY WITHOUT THE WRITTEN APPROVAL OF GE.b GE Oil & Gas 2016 General Electric Company. All rights reserved.

ContentsSafety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1About this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Serial Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2After Sales Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Actuator and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Numbering System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Recommended Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Piping Cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Isolation Bypass Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Heat Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Hydrostatic Testing and Line Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Flow Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Welded Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Pre-Weld Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Welding Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Post Weld Cleaning & Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Actuator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Valve Actuation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Disconnect Instrumentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Air-to-Retract Actuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Threaded Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Stem Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Air-to-Extend Actuators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Actuator Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Valve Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2016 General Electric Company. All rights reserved.Masoneilan 78400/18400 Series LincolnLog Valve Instruction Manual c

Maintenance & Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Packing Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Packing Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Parts Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Guiding Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Seating Surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Seat Lapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Soft Seat Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Gaskets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Metal Seal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Valve Plug and Stem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Plug Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Valve Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Plug Stem Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Assembly Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Valve Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Valve Sizes 1" and 1-1/2" Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Valve Sizes 2" to 8" Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Body Bolting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Packing Box Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Low Emissions LE* Packing (Optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Packing Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Packaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Spring Loaded Follower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Packing Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Valve Travel Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Parts References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Actuation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Type 87/88 Multi-Spring Diaphragm Actuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Parts Reference Table 87/88 Actuators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Type 51/52/53 Cylinder Actuators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Connecting Double Acting (Model 51). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Connecting Air to Extend (Model 52) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Connecting Air to Retract (Model 53). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Parts Reference Table 51/52/53 Actuators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26d GE Oil & Gas 2016 General Electric Company. All rights reserved.

Safety InformationImportant - Please Read BeforeInstallationMasoneilan 78400/18400 Series instructions contain DANGER,WARNING, and CAUTION labels, where necessary, to alert youto safety related or other important information. Read theinstructions carefully before installing and maintaining yourcontrol valve. DANGER and WARNING hazards are relatedto personal injury. CAUTION hazards involve equipment orproperty damage. Operation of damaged equipment can,under certain operational conditions, result in degradedprocess system performance that can lead to injury or death.Total compliance with all DANGER, WARNING, and CAUTIONnotices is required for safe operation.This is the safety alert symbol. It alerts you to potentialpersonal injury hazards. Obey all safety messages thatfollow this symbol to avoid possible injury or death.About this Manual The information in this manual is subject to change withoutprior notice. The information contained in this manual, in whole or part,shall not be transcribed or copied without GE's writtenpermission. Please report any errors or questions about the informationin this manual to your local supplier. These instructions are written specifically for the78400/18400 LincolnLog control valves, and do not applyto other valves outside of this product line.Useful LifeThe current estimated useful life period for the Masoneilan78400/18400 Series control valve is 25 years. To maximizethe useful life of the product it is essential to conduct annualinspections, routine maintenance and ensure properinstallation to avoid any unintended stresses on the product.The specific operating conditions will also impact the usefullife of the product. Consult the factory for guidance on specificapplications if required prior to installation.WarrantyIndicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.Indicates a potentially hazardous situation which, if notavoided, could result in serious injury.Items sold by General Electric are warranted to be free fromdefects in materials and workmanship for a period of oneyear from the date of shipment provided said items are usedaccording to GE recommended usages. GE reserves theright to discontinue manufacture of any product or changeproduct materials, design or specifications without notice.This instruction manual applies to the Masoneilan78400/18400 Series control valves.Note:Indicates a potentially hazardous situation which, if notavoided, could result in minor or moderate injury.When used without the safety alert symbol indicates apotentially hazardous situation which, if not avoided, couldresult in property damage.Note: Indicates important facts and conditions. The control valve MUST BE installed, put intoserviceandmaintainedbyqualifiedandcompetent professionals who have undergonesuitable training. Under certain operating conditions, the use of damagedequipment could cause a degradation of the performanceof the system which may lead to personal injury or death. Changes to specifications, structure, and componentsused may not lead to the revision of this manual unlesssuch changes affect the function and performance of theproduct. All surrounding pipe lines must be thoroughly flushed toensure all entrained debris has been removed from thesystem. 2016 General Electric Company. All rights reserved.Masoneilan 78400/18400 Series LincolnLog Valve Instruction Manual 1

IntroductionAfter Sales ServiceScopeThe following instructions are designed to guide theuser through the installation and maintenance of theMasoneilan 78400/18400 Series control valves.The Masoneilan 78400/18400 Series control valve ispart of Masoneilan’s Engineered Product portfolio, andis custom designed to fit our customer’s most difficultapplications. This document provides detailed installationand maintenance instructions for all sizes, ratings and trimtypes used in the LincolnLog product line.Serial PlateThe serial plate is usually fixed to the side of the actuatoryoke. It indicates information about the valve includingsize and type, pressure class rating, body/bonnet material,and serial number.GE offers After Sales Service comprised of highly qualifiedtechnicians to support the installation operation,maintenance and repair of its Masoneilan equipment. Forsupport contact the local GE representative or Masoneilanfactory located closest to you.Spare PartsOnly Masoneilan replacement parts should be used whencarrying out maintenance operations. Obtain replacementparts through local GE representatives or MasoneilanParts Department.When ordering spare parts, the model and serialnumbers indicated on the manufacturer’s serial platemust be given.Actuator and AccessoriesActuators and other valve accessories have their owninstruction manuals, that provide information and detailson the assembly and installation. Refer to the appropriateinstruction manual for each unique accessory.Numbering System1st2ndActuator Type87 Spring-DiaphragmAir to Close88 Spring-DiaphragmAir to Open51 CylinderDouble Acting52 Cylinder SpringReturn (Air To Extend)53 Cylinder SpringReturn (Air To Retract)20 Top MountedManual Handwheel1stBodySeries1 Globe7 Angle2nd8Trim Type4 Axial FlowHigh Resistance(Downseating)3rd4No. ofStages*3 Three4 Four6 Six4th5th6thOptionalConfigurationTrim Size0 Optional Trim1 Trim A, BalancedHard Seat2 Trim B, BalancedHard Seat3 Trim C, BalancedHard Seat4 Trim A, BalancedSoft Seat5 Trim B, BalancedSoft Seat6 Trim C, BalancedSoft Seat7 Trim A, UnbalancedHard Seat8 Trim B, UnbalancedHard Seat9 Trim C,Unbalanced HardSeatFForged BodyDesignEB ExtensionBonnet* Additional stages are available to meet specific operating conditions.Please consult GE.2 GE Oil & Gas 2016 General Electric Company. All rights reserved.

Unpackingvalve bonnet and take protective measures relative topersonal safety.Care must be exercised when unpacking the valve toprevent damage to the accessories and component parts.Contact the local GE Sales Office or Service Center with anyissues or problems. Be sure to note the Masoneilan valvemodel number and serial number in all correspondences.Hydrostatic Testing and Line CleaningInstallationDuring this operation, the control valve must not be usedas an isolating valve. This means that the valve mustalways be opened before carrying out pressure tests in theprocess line, cleaning of pipes, etc. Otherwise equipmentdamage or failure of the seal rings could result. Flushingand hydrostatic test equipment can be purchased fromthe Masoneilan factory.Flow DirectionThe 78400/18400 Series valve must always be installedwith the flow tending to open the valve plug. Forapplications where insulation of the valve body isrequired, do not insulate the valve bonnet.The valve must be installed so that the process fluid willflow through the valve in the direction indicated by theflow arrow located on the body.Welded ConnectionsRecommended InstallationIt is recommended to install the 78400/18400 Series valvesin the vertical position with the actuator extended upwhenever possible. This orientation eliminates the needfor additional pipe support, reduces the side load frictionon the actuator, and provides ease of removal of the trimduring maintenance for weld-end construction designs.Piping CleanlinessBefore installing the valve in the line, clean piping andvalve of all foreign material such as welding chips, scale,oil, grease or dirt. Gasket mating surfaces must bethoroughly cleaned to ensure leak-free joints. Sacrificialstart-up fixtures can be purchased from GE to protect theoperational trim during the installation and line flushingphases.If major system or piping modifications (or repairs) areperformed, thorough flushing and blowdown of thesystem will be required prior to reinstalling the LincolnLogtrim. Sacrificial flushing trim should be installed in thisvalve to protect the integrity of the flow passages. Failureto follow this warning will violate the valve warrantyagreement and could result in control instability,excessive noise levels, and valve leakage.Isolation Bypass ValveTo allow for in-line inspection, maintenance and removal ofthe valve without service interruption, provide a manuallyoperated shutoff valve on each side of the control valve anda manually operated throttling valve in the bypass line.Heat InsulationIn case of a heat-insulated installation, do not insulate the 2016 General Electric Company. All rights reserved.Carefully review the information in this section prior towelding any valves inline. Refer any additional questionsto the local GE Sales Office or Service Center.Pre-Weld PreparationCarefully follow the installation steps defined in the sectionsnoted above prior to performing weld procedures.Welding ProcessPerform welding process in accordance with the standardrequirements for the materials and weld constructionof the specific valve. Apply post weld heat treatment ifrequired.Internal valve components should be removed priorto performing any post weld heat treatment in orderto prevent damaging any soft goods (such as teflonseals). If unable to remove the elastomeric components,then other methods must be employed to prevent thelocal temperature around the seals from exceeding themaximum material limits (typically 450 F / 232 C forTeflon-based materials).Post Weld Cleaning & AssemblyInspect the body, bonnet, and trim components forcleanliness and surface condition. Remove any foreignmaterials, such as weld chips, slag or scale. Make surethere are no nicks, scratches, burrs or sharp corners onsealing and sliding surfaces. Clean all gasket interfacesurfaces and reassemble using new gaskets to ensuresealing integrity.Masoneilan 78400/18400 Series LincolnLog Valve Instruction Manual 3

Actuator Assemblyfrom the valve and actuator stems.Assemble the actuator onto the control valve using theappropriate instructions for the specific actuator modeland type. Connect air pressure lines to the actuator portsto meet intended operating mode (i.e., air-to-extend,air-to-retract, or double-acting).Air-to-Extend ActuatorsDisassemblyPrior to performing any maintenance on the valve,isolate the valve and vent the process pressure.Valve ActuationAccess to the internal components of the valve shouldbe accomplished with the actuator removed. Follow thedetailed instructions below and refer to the appropriateactuator instruction manuals.For this actuator configuration, the valve plug is already inthe fully retracted position without any air pressure applied.Disconnect the plug stem and actuator stem as describedin the threaded connection and stem connector sectionsabove depending on the connection type.Actuator RemovalDisconnect all electrical and air connections to and fromthe actuator. Disassemble yoke nut or yoke attachmentscrews, and lift the actuator off of the valve being carefulnot to damage the bonnet threads.Valve DisassemblyThe valve must always be reassembled with new packingset and gaskets. Before disassembly, make sure therecommended spare parts are available for reassembly.1.Disconnect the piping to the leak detector connectionon the bonnet (if applicable).2.Remove the body stud nuts (7).Note: For valve sizes 1" through 2", the bonnet (23) is aone-piece construction. Valve sizes 3" and larger havea bonnet (23) with a separate bonnet flange (24). Theselarger sizes also use a metal seal (10) and multiple seatring gaskets (11) at various locations.Actuator may be pre-loaded with tension from air pressureor springs. Prior to disconnecting instrumentation readall instructions for the specific actuator.Disconnect InstrumentationDisconnect all mechanical connections between thepositioner and the other instruments. Disassemble thevalve stem and actuator stem coupling as described in thefollowing sections.Air-to-Retract ActuatorsApply sufficient air pressure to the actuator to retractthe stem completely. Disconnect the plug stem fromthe actuator stem depending on the connection type asdescribed below.For valve sizes 1" through 2" follow disassembly instructions3-10:3.Disassemble the bonnet (23) and plug (20) / stem (21)subassembly from the valve body as a single unit.4.Remove the packing flange nuts (2), packing flange (3),and the packing follower (4).5.Remove the plug (20) and stem (21) subassembly fromthe valve bonnet (23).Threaded ConnectionUnscrew the plug stem from the actuator stem, makingsure the plug never contacts the seating area (liner or seatring) at any time during disassembly.Contact between the plug and seating area duringthis disassembly process may cause damage to theseating surfaces. It may be necessary to disassemblethe actuator yoke from the valve bonnet and lifting theactuator off the valve to avoid plug to seating surfacecontact.Stem ConnectorRemove the screws and disassemble the stem connector4 GE Oil & GasBe careful not to damage the plug (20) or liner (18) whileremoving the plug/stem subassembly.6.Remove the old packing set (22) and lantern ring (17).Note: Applicable only for units with the optional leakdetector bonnet option.7.Remove the body gasket (10), liner (18), and seat ring(19) from the body.Note: Valve sizes 1" and 1.5" have integral seat ringsin the liners.8.Remove the retainer (8), seal ring, and back-up rings(9) from the liner.Note: The retainer, seal ring and back-up rings areonly used in the balanced valve assemblies. 2016 General Electric Company. All rights reserved.

9.Remove the seat ring gasket (11).Note: 2" size valves have multiple seat ring gaskets.10. Inspect the bonnet (23), plug (20) and stem (21)assembly, liner (18), seat ring (19), and body (25) forany visual defects or damage. Carefully inspect thedynamic sliding surfaces and the seal interface areas.For valve sizes 3" and larger follow disassemblyinstructions 11-19:11. Disassemble the bonnet flange (24) and metal seal (10)from the valve.Note: The metal seal (10) will require some force toremove from the valve. Using a common tool, suchas an open-end wrench, lever the seal up at variouspoints to lift out evenly.12. Remove the bonnet (23) and plug (20) / stem (21)subassembly from the valve body as a single unit.Packing BoxPacking box maintenance is one of the principal tasksduring routine servicing. Tightness of the packing (22)is maintained by proper compression. Compression isachieved by evenly tightening the packing flange nuts (2)against the packing flange (3). Periodic re-tightening of thepacking flange nuts may be required to maintain propersealing.Care must be taken not to over tighten, as this couldcreate unnecessary friction preventing smooth valveoperation. If packing leakage persists after applyingmaximum compression, then the packing needs to bereplaced.13. Remove the packing flange nuts (2), packing flange (3),and the packing follower (4).14. Remove the plug (20) and stem (21) subassembly fromthe valve bonnet (23).The valve must be isolated and the process pressurevented prior to performing any packing box maintenance.Packing ReplacementBe careful not to damage the plug (20) or liner (18)while removing the plug/stem subassembly.15. Remove the old packing set (22) and lantern ring (17).Note: Applicable only for units with the optional leakdetector bonnet option.Disassembly of the valve bonnet from the body isrecommended before replacing the standard Teflon

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