TT Temperature transmitter VA-LI Actuated valve, liquid XT Transmitter VA-GA Actuated valve, gas VA-EL-LI Actuated valve, electrical-operated, liquid VA-EL-GA Actuated valve, electrical-operated, gas VA-ESD-LI Actuated valve, emergency service, liquid VA-ESD-GA Actuated valve, emergency service, gas VE-LI Pressure vessel, liquid VE-LI-HP Pressure vessel, liquid, High Pressure VE-LI-LP Pressure vessel, liquid, Low Pressure VE-GA Pressure vessel, gas VE-GA-HP Pressure vessel, gas, High Pressure VE-GA-LP Pressure vessel, gas, Low Pressure COL-LT Column/Contactor, Low Temperature COL-HT Column/Contactor, High Temperature TA Tank HE-LI Heat Exchanger, liquid/liquid-gas HE-LI-LP Heat Exchanger, liquid/liquid-gas, Low Pressure HE-LI-HP Heat Exchanger, liquid/liquid-gas, High Pressure HE-GA Heat Exchanger, gas/gas HE-GA-LP Heat Exchanger, gas/gas, Low Pressure HE-GA-HP Heat Exchanger, gas/gas, High Pressure HC-LI Air cooler, liquid HC-LI-LP Air cooler, liquid, Low Pressure HC-LI-HP Air cooler, liquid, High Pressure HC-GA Air cooler, gas HC-GA-LP Air cooler, gas, Low Pressure HC-GA-HP Air cooler, gas, High Pressure BOIL Boiler BOIL-LP Boiler , Low Pressure BOIL-HP Boiler , High Pressure HM-INT Electrical Heater, internal component REA Reactor, high temperature FUR Furnace/thermal reactor CHI Chiller (air/water) PU Pump KG Integral Gear Compressors KZ Miscellaneous compressors/blowers/ventilators KA Centrifugal compressors KB Reciprocating compressors (diaphragm) KC Screw/rotary compressors KL Axial compressors HP Cooling tower (induced draft) KD Blowers KE Fans KP Reciprocating compressor (piston) PN canned motor pump PA Centrifugal (horizontal or vertical in line) PB Reciprocating GV Circulating pump PG diaphragm pump PV Vacuum pump PD Metering pump PC Rotary/gear/screw/sliding vane PH Submersible pump with external driver PS Submersible pump with submersible motor MS Steam turbine MT Gas turbine MD Diesel engine MG Gas engine (internal combustion) FA Direct fired heater FE Cabin furnace FF Special furnace FG Water-tube boiler, fire-tube boiler, drum boiler FJ Incinerator (including thermo disposal equipment and evaporating candles) FL Economizer FX Burner FY Indirect fired heater GD Water Boiler/Heater HD Quench boiler/cooler HE Recovery boiler HS Water cooler HT Super heater HW Waste heat recovery unit HM Electric exchanger (not sanitary) HN Electric heating system applied to equipment FR Glycol regenerator VA Horizontal/Vertical pressure vessel (general) VB Expansion tank, Pressurizer, Compensation tank, Expansion vessel, Damper VC Extractor, Scrubber, Evaporator (Vessels, columns and reactors) VD Gas boot VE Column VH Deaerator/degasser/flash tank VJ Contact absorption equipment/Regenerator VK Dryer VN Knock out drum, gun barrel and scrubber VQ Slug catcher VS Production separator VY Horizontal and vertical vessel at atmosphere pressure VO Extractor, scrubber, evaporator CF Mechanical separator/screen/vibrating screen VP Test separator VU Desalted, electrostatic separator HA Exchanger Shell and Tube HB Plate exchanger Shell HC Air cooled exchanger HF Double pipe exchanger HH Printed circuit heat exchanger HK Finned or not finned tube exchanger without shell HQ Cooling tower (natural draft) HX Spiral heat exchanger HY Cryogenic heat exchanger HZ Miscellaneous heat transfer equipment EG Electric generators (AC or DC) MW Aero Generator FS FLOW SWITCH FSH FLOW SWITCH HIGH FSHH FLOW SWITCH HIGH HIGH FSHL FLOW RATE SWITCH HIGH LOW FSL FLOW RATE SWITCH LOW FT FLOW TRANSMITTER LDT LEVEL DIFFERENTIAL TRANSMITTER LG LEVEL GLASS GAUGE LSH LEVEL SWITCH HIGH LSHH LEVEL SWITCH HIGH HIGH LSHL LEVEL SWITCH HIGH LOW LSL LEVEL SWITCH LOW LSLL LEVEL SWITCH LOW LOW LT LEVEL TRANSMITTER PDT PRESSURE DIFFERENTIAL TRANSMITTER PSH PRESSURE SWITCH HIGH PSHH PRESSURE SWITCH HIGH HIGH PSHL PRESSURE SWITCH HIGH LOW PSL PRESSURE SWITCH LOW PSLL PRESSURE SWITCH LOW LOW PT PRESSURE TRANSMITTER TDT TEMPERATURE DIFFERENTIAL TRANSMITTER TS TEMPERATURE SWITCH TSH TEMPERATURE SWITCH HIGH TSHH TEMPERATURE SWITCH HIGH HIGH TSHL TEMPERATURE SWITCH HIGH LOW TSL TEMPERATURE SWITCH LOW TSLL TEMPERATURE SWITCH LOW LOW AT ANALYSIS TRANSMITTER EC Control boards (e.g. EMS, LLS, etc.) EJ Interconnecting panels, Junction boxes EL Auxiliary Service Panel (ASP), Lighting, Small Power, tracing distribution boards ER Electrical Power Unit (EPU) ES Motor Driver panel (e.g. VFD, VSD, Soft-Starter, etc.) JI Master Control Station (MCS) JP Pneumatic and/or hydraulic Control panel, any Local Control Panel JQ I/O Remote cabinet JT Junction box JW Well head Control Panel FCM Flow Control Module JE Safety integrated System (SIS), Emergency shutdown (ESD)equipment JG Power Distribution Panel for control or safety equipment JH High Integrity Protection Pressure System (HIPPS) JL Safety (ESD /F&G) Unit Control Panel (UCP-S), Package Safety System (PLC based, or Relays based) JU Extinguishing gas panel, Deluge panel, Firefighting panel JX Flare ignition panel JK Process or Generic Unit Control Panel (UCP-C), Package Control System (PLC based, or Relays based) JD Process Control System (PCS)/ Distributed Control System equipment (DCS) R* Manual Valve RB Ball valve UV ON/OFF (NOT SAFETY) VALVE RF Butterfly valve RC Check valve RD Diaphragm valve RG Gate valve MOV MOTOR OPERATED VALVE RA Globe valve FCV FLOW RATE CONTROL VALVE FV FLOW VALVE LCV LEVEL CONTROL VALVE LDCV LEVEL DIFFERENTIAL CONTROL VALVE LV LEVEL VALVE PCV PRESSURE CONTROL VALVE PDCV PRESSURE DIFFERENTIAL CONTROL VALVE TCV TEMPERATURE CONTROL VALVE TDCV TEMPERATURE DIFFERENTIAL CONTROL VALVE TV TEMPERATURE VALVE PSV PRESSURE SAFETY VALVE PVSV PRESSURE VACUUM SAFETY VALVE US HIPPS UT SSIV Module SSSV SUBSURFACE SAFETY VALVE BDV BLOW DOWN VALVE ESDV EMERGENCY SHUTDOWN VALVE PSDV PRODUCTION SHUTDOWN VALVE SDV SHUT DOWN VALVE SSV SURFACE SAFETY VALVE SCSSV Surface Controlled Subsurface Safety Valve SSCV SUBSURFACE CONTROL VALVE SSIV SUBSEA ISOLATION VALVE HFL Hydraulic/Chemical flying lead EFL Electrical flying lead EHFL Electro-Hydraulic Flying Lead EOFL Electro-Optic Flying Lead OFL Optic Flying Lead MPFL Multi-Purpose Flying Lead UJ Dynamic Umbilical UK Static Umbilical UL Integrated Pipeline Umbilical EB Accumulator Batteries JF Safety integrated System (SIS), Fire and Gas detection equipment, Fire Adressable Control Panel (FACP) BE FLAME DETECTOR CN Active carbon filter CK Basket Strainer CM Sand filter/"Dual media" filter CA Regenerative filter CL Cartridge filter CY Miscellaneous filters GC Specific filters for H.V.A.C. GY Chemical filter scrub CQ Coalescence filter and separator CE Static mixer CJ Mixer/Agitator (motorized) GL UV type sterilizer (for water), Water softener and Demineraliser ET Transformers and autotransformers EM MCC switchgears EH Medium Voltage switchgears TB Atmospheric storage tank, cylindrical (floating roof) TC Atmospheric storage tank, not cylindrical TD Spherical or spheroid tank TE Bin bulk storage TG Silos TH Drainage separator basin TJ Diaphragm Tank TF Cylinder storage tank (above and underground ML Turbo-expander ED DC UPS (Direct Current Panels - DCP) EK AC UPS UE Oil Production Xmas Tree UF Gas Production Xmas Tree UG Water Injection Xmas Tree UH Gas Injection Xmas Tree UI WAG Injection Xmas Tree SCK Subsea Choke Module CITV Chemical Injection Throttle Valve DCITV Dual Chemical Injection Throttle Valve PMV Production Master Valve PWV Production Wing Valve UPMV Upper Production Master Valve AVV Annulus vent valve XOV Crossover Valve SCM Subsea Control module UM Subsea Distribution Unit UO Gas Production Manifold / PLEM UN Oil Production Manifold / PLEM UP Water Injection Manifold / PLEM UQ Gas Injection Manifold / PLEM UR WAG Injection Manifold / PLEM DW Well-head and Christmas tree manifold UY Subsea Pump Module ESP Electrical Submersible Pump UU Multiphase Pump