GE Mooney Flowgrid Instruction Manual

Contents

6 | GE Oil & Gas© 2015 General Electric Company. All rights reserved.InstallationWARNING1. PERSONNEL: Installation of the Flowgrid regulatorshould be made by qualified personnel familiar withhigh pressure piping and pilot operated regulators.2. PRIOR INSPECTION: Inspect the main regulator,pilot, and tubing for any damage that might haveoccurred in shipping. Make sure the body, pilot lines,and inlet piping are clear and free from foreignmaterial.3. ORIENTATION: The Flowgrid regulator may beinstalled in any position - the best position being onethat provides easiest access for pilot adjustmentand regulator maintenance.4. SCREWED END REGULATORS: Apply pipecompound to the male threads starting one or twothreads back from the end prior to assembling thejoint.5. FLANGED END REGULATORS: Use suitable linegaskets and good bolting practices with flangedbodies. A crisscross pattern of incrementallytightening the line bolts is recommended.6. WELD END BODIES: Remove the Spring Case andall trim parts including diaphragm and O-ringsbefore welding a buttweld and/or a socket weldend Flowgrid regulator. Electric arc welding isrecommended to minimize heat build-up on thebody assembly. Reassemble regulator (refer to theMaintenance section of this manual for Disassemblyand Assembly procedures) and pressurize with airto check for leaks prior to putting the regulator inservice.Personal injury, equipment damage, or leakage dueto explosion of accumulated gas or bursting of pres-sure containing parts may result if this regulator isoverpressured or is installed where service conditionscould exceed the limits given in the specification ofthis manual or on the nameplate, or where conditionsexceed any ratings of the adjacent piping or pipingconnections. Verify the limitations of both regulatorand pilot to ensure neither device is overpressured.To avoid such injury or damage, provide pressurerelieving or pressure limiting devices (as requiredby Title 49, Part 192, of the U.S. code of FederalRegulations, by the National Fire Codes of theNational Fire Protection Association, or applicablecodes) to prevent service conditions from exceed-ing those limits. Additionally, physical damage tothe regulator/regulator could break the pilot off themain regulator, causing personal injury and/or prop-erty damage due to explosion of accumulated gas. Toavoid such injury and damage, install the regulatorin a safe location.WARNINGGas Regulators installed in confined or enclosedspaces should be provided with adequate ventilationto prevent the possibility of gas buildup or accumula-tion from leaks and venting. Leaks or vented gas mayaccumulate causing personal injury, death, or propertydamage. Pilot spring cases and the regulator enclosureshould be vented to a safe area away from air intakes,or any hazardous location. The vent lines and stacksmust be protected against condensation and clogging.7. PILOT SUPPLY LINES: Run a 3/8” or 1/2”pilot supplyline from the regulator body connection on the inletside of the Flowgrid regulator to the pilot supplyFilter or directly to the pilot Restrictor.NOTE: A shutoff regulator is not required in the supplyto the pilot, but if one is installed it should be a fullopening ball regulator type.8. A TYPE 30 FILTER in the pilot supply line is recom-mended to clean dirt and other particulates thatcould affect the restrictor or variable orifice in thepilot. Use a 1/4” nipple to mount the filter to thebody tap on the Flowgrid regulator.9. FILTER OUTLET: Run 3/8” tubing or 1/4” pipe fromthe filter OUTLET port to the INLET side of the restric-tor in the pilot system of the regulator. The TYPE30/30A/30S FILTER has two OUTLET ports for ease oftubing. Block the other port with the plug provided ormount a gage to monitor inlet pressure if desired.NOTE: To avoid galling when stainless steel to stain-less steel connections are made use a lubricant (suchas NEVER SEEZ by Bostik). For best results Lightlylubricate the female threads. Mixing the lubricant withpipe dope is also acceptable. Do not exceed more than1/4 turn past the point the threads start to bind.10. PILOT GAS HEATERS (OPTIONAL): Pilot supply gascan be heated to prevent the formation of ice orhydrates in the pilot system. Pilot supply gas heatersshould be connected after the pilot filter (if one isused). Do not directly heat to entire Flowgridregulator to prevent freezing; internal rubbercomponents can be heated beyond their maxtemperature rating causing potential damage.11. SENSE LINES (CONTROL LINES): Sense lines shouldbe run from the pilot mounted on the Flowgridregulator to a point 8 to 10 pipe diameters awayfrom the regulator (Refer to Piping Schematics). UseTable 5 as a guide for the ideal tubing to use. Reduceas necessary to connect to the pilot.