CADXChange P&ID equipment and piping symbol library, ISO 10628-2 style (DWG)
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296 symbols as AutoCAD blocks, drawn in millimetres at 1:1. Plain DWG (AutoCAD 2018 format), no add-in needed.
The symbols are drawn after the common forms of ISO 10628-2 (equipment, valves, fittings and piping symbols for process flow diagrams and P&IDs).
They are our own drawings, not copies of the standard, and the library is not certified against it. Check your company or client standard before you rely on a shape.

Conventions
- One block per symbol, named PID_<NAME>, all geometry on layer SYMBOL.
- Equipment: the insertion point is the centre of the symbol. Short 5 mm stubs mark the preferred connection points; delete the ones you do not need.
  A visible TAG attribute (equipment tag, for example P-101) sits next to the symbol. The other attributes (SERVICE, capacity, design pressure and
  temperature, material, MANUFACTURER, MODEL, PID_NO ...) are invisible and show in the attribute editor (EATTEDIT, or double-click the block) and in exports.
- Valves: the insertion point is the left pipe connection, both connections sit on a 5 mm grid; the visible attributes are VALVE_TAG and SIZE.
- Pipeline symbols are 20 mm samples centred on the insertion point; use them as a pattern for your own polylines.
- Model space holds a catalog of all symbols (cells of 60 x 45 mm); the CATALOG layout shows it at 1:1 on an A2 sheet.
- To count the symbols or list their attributes in many drawings, export the blocks to Excel with BlockSync: https://cadxchange.net/blocksync

Symbols
Vessels and tanks
  PID_TANK                         Tank, vessel
  PID_TANK_OPEN                    Container, tank, cistern
  PID_TANK_CONE_ROOF               Tank, conical roof, flat bottom
  PID_TANK_DISHED_ROOF             Tank with dished roof
  PID_TANK_DISHED_ENDS             Tank, vessel with dished ends
  PID_VESSEL_TWO_DIA               Vessel, two diameters
  PID_VESSEL_SPHERE                Spherical vessel
  PID_BUNKER_CONE                  Bunker, conical bottom
  PID_TANK_CONE_BOTTOM             Closed tank, conical bottom
  PID_VESSEL_DISHED_CONE           Vessel, dished roof, cone bottom
  PID_VESSEL_CONE_ROOF_BOTTOM      Vessel, conical roof and bottom
  PID_CONTAINER                    Container (solids, liquids, gases)
  PID_BARREL                       Barrel, drum
  PID_GAS_CYLINDER                 Gas cylinder
  PID_BAG                          Bag
  PID_VESSEL_LEGS                  Vessel, dished ends, legs
  PID_VESSEL_BRACKETS              Vessel, dished ends, brackets
  PID_VESSEL_SKIRT                 Vessel, dished ends, skirt
  PID_VESSEL_RING                  Vessel, dished ends, support ring
  PID_VESSEL_JACKET                Vessel, heating / cooling jacket
  PID_VESSEL_ELECTRIC              Vessel, electrical heating
  PID_VESSEL_INSULATED             Vessel, thermal insulation
  PID_VESSEL_LEVEL                 Vessel, dished bottom, surface mark
  PID_SPHERE_LEGS                  Spherical vessel on legs
  PID_VESSEL_COIL_FULL             Vessel, full-tube coil
  PID_VESSEL_COIL_HALF             Vessel, half-tube coil
  PID_VESSEL_AGITATED_JACKET       Jacketed vessel with agitator
  PID_VESSEL_PIT                   Horizontal vessel with pit
  PID_BULK_STORAGE                 Open bulk storage

Columns
  PID_COLUMN                       Column (general)
  PID_COLUMN_TRAY                  Tray column (general)
  PID_COLUMN_FLUIDIZED             Column, fluidized bed
  PID_COLUMN_FIXED_BED             Column, fixed bed
  PID_COLUMN_BAFFLE                Column, staggered baffle trays
  PID_COLUMN_BUBBLE_CAP            Column, bubble cap trays
  PID_COLUMN_VALVE_TRAY            Column, valve trays
  PID_COLUMN_TWO_BEDS              Column, two fixed beds

Heat exchangers, boilers and cooling
  PID_HX_GENERAL                   Heat exchanger (general), condenser
  PID_HX_M_SHAPE                   Heat exchanger, M-shape
  PID_HX_FIXED_TUBE                Heat exchanger, straight tubes
  PID_HX_FLOATING_HEAD             Heat exchanger, floating head
  PID_HX_U_TUBE                    Heat exchanger, U-tubes
  PID_HX_PLATE                     Heat exchanger, plate type
  PID_HX_COIL                      Heat exchanger, coil tubes
  PID_HX_DOUBLE_PIPE               Heat exchanger, double pipe
  PID_HX_FINNED                    Heat exchanger, finned tube
  PID_HX_FINNED_FAN                Heat exchanger, finned tube + fan
  PID_HX_SPIRAL                    Heat exchanger, spiral
  PID_EVAPORATOR                   Evaporator, re-boiler
  PID_HEATER_ELECTRIC              Electric heater
  PID_EVAPORATOR_THIN_FILM         Thin-film evaporator
  PID_TUBE_BUNDLE_U                Tube bundle, U-tubes
  PID_TUBE_BUNDLE_FLOAT            Tube bundle, floating head
  PID_BOILER_DOME                  Boiler with dome
  PID_STEAM_GEN_LIQUID             Steam generator, hot liquid
  PID_FURNACE                      Furnace
  PID_BURNER                       Firing system, burner
  PID_COMBUSTION_CHAMBER           Combustion chamber
  PID_VESSEL_DOME_H                Vessel with dome
  PID_STACK                        Stack, chimney
  PID_FLARE                        Gas flare
  PID_COOLING_TOWER                Cooling tower (general)
  PID_CT_DRY_NATURAL               Cooling tower, dry natural draught
  PID_CT_DRY_FORCED                Cooling tower, dry forced draught
  PID_CT_DRY_INDUCED               Cooling tower, dry induced draught
  PID_CT_WET_NATURAL               Cooling tower, wet natural draught
  PID_CT_WET_FORCED                Cooling tower, wet forced draught
  PID_CT_WET_INDUCED               Cooling tower, wet induced draught
  PID_CT_WETDRY_NATURAL            Cooling tower, wet-dry natural
  PID_SPRAY_COOLER                 Spray cooler

Filters, screens, separators and centrifuges
  PID_FILTER_LIQUID                Liquid filter (general)
  PID_FILTER_CARTRIDGE             Liquid filter, bag / cartridge
  PID_FILTER_BED_FIXED             Liquid bed filter, fixed
  PID_FILTER_SUCTION               Suction filter
  PID_FILTER_ROTARY                Liquid rotary filter, drum / disc
  PID_FILTER_ROTARY_PRECOAT        Liquid rotary filter, precoat
  PID_FILTER_BELT                  Liquid filter, belt / roll
  PID_FILTER_PRESS                 Filter press
  PID_FILTER_ION                   Liquid bed filter, ion exchange
  PID_FILTER_BIO                   Liquid bed filter, biological
  PID_FILTER_GAS                   Gas filter (general)
  PID_FILTER_GAS_BAG               Gas filter, bag / cartridge
  PID_FILTER_GAS_BED               Gas bed filter, fixed
  PID_FILTER_HEPA                  Gas filter, HEPA
  PID_FILTER_GAS_BELT              Gas filter, belt / roll
  PID_SCREEN_GENERAL               Screening device, sieve (general)
  PID_SCREEN_COARSE_RAKE           Screening device, coarse rake
  PID_SCREEN_FINE_RAKE             Screening device, fine rake
  PID_SCREEN_COARSE_FINE           Screening device, coarse + fine
  PID_SCREEN_VIBRATING             Screening device, vibrating
  PID_SCREEN_DRUM                  Screening device, rotating drum
  PID_SCREEN_BASKET_REEL           Screening device, basket reel
  PID_SEP_GENERAL                  Separator, sifter (general)
  PID_SEP_IMPACT                   Impact separator
  PID_SEP_GRAVITY                  Gravity separator, settling chamber
  PID_SEP_SCRUBBER_WET             Separator, wet scrubber
  PID_SEP_SPRAY_SCRUBBER           Spray scrubber
  PID_SEP_ESP                      Separator, electrostatic precipitator
  PID_SEP_ESP_WET                  Precipitator, wet electrostatic
  PID_SEP_ELECTROMAGNETIC          Electromagnetic separator
  PID_SEP_MAGNET                   Permanent magnet separator
  PID_SEP_CYCLONE                  Separator, cyclone
  PID_SEP_VENTURI                  Separator, venturi scrubber
  PID_SOLIDIFIER_WASTEWATER        Solidifier, waste water plant
  PID_SOLIDIFIER_CLOSED            Solidifier, closed type
  PID_CENTRIFUGE_HIGH_SPEED        High speed centrifuge
  PID_CENTRIFUGE_PERFORATED        Centrifuge, perforated shell
  PID_CENTRIFUGE_SOLID             Centrifuge, solid shell
  PID_CENTRIFUGE_DISC              Centrifuge, disc separator
  PID_CENTRIFUGE_SCREW_PERF        Centrifuge, screw, perforated
  PID_DECANTER                     Decanter, screw, solid shell
  PID_CENTRIFUGE_PUSHER            Centrifuge, pusher type
  PID_CENTRIFUGE_SKIMMER           Centrifuge, skimmer type

Drying, crushing, mixing and shaping
  PID_DRIER                        Drier (general)
  PID_DRIER_OVEN                   Drying oven, shelf drier
  PID_DRIER_TURBO                  Turbo / disc drier
  PID_DRIER_FLUID_BED              Fluidized bed drier
  PID_DRIER_SPRAY                  Spray drier
  PID_DRIER_BELT                   Belt drier
  PID_DRIER_ROTARY                 Rotary drum drier
  PID_HEAT_CONSUMER                Heat consumer
  PID_CRUSHER_GENERAL_X            Crushing / grinding machine
  PID_CRUSHER                      Crusher (general)
  PID_CRUSHER_HAMMER               Crusher, hammer type
  PID_CRUSHER_IMPACT               Crusher, impact type
  PID_CRUSHER_JAW                  Crusher, jaw type
  PID_CRUSHER_ROLLER               Crusher, roller type
  PID_CRUSHER_CONE                 Crusher, cone type
  PID_MILL                         Mill, pulverizer (general)
  PID_MILL_HAMMER                  Mill, hammer type
  PID_MILL_IMPACT                  Mill, impact type
  PID_MILL_ROLLER                  Mill, horizontal roller
  PID_MILL_VIBRATION               Mill, vibration type
  PID_MIXER_ROTARY                 In-line rotary mixer
  PID_MIXER_STATIC                 In-line static mixer
  PID_MIXING_PATH                  Mixing path
  PID_KNEADER                      Kneader
  PID_SHAPING_V                    Shaping machine, vertical
  PID_PRESS_ROLLER                 Press, roller type
  PID_PRESS_PISTON                 Press, piston type
  PID_PELLETIZING_DISC             Pelletizing disc
  PID_SHAPING_H                    Shaping machine, horizontal
  PID_EXTRUDER_SCREW               Extruder, screw type
  PID_EXTRUDER_PISTON              Extruder, piston type

Pumps, compressors and fans
  PID_PUMP                         Pump, liquid (general)
  PID_PUMP_CENTRIFUGAL             Pump, centrifugal
  PID_PUMP_GEAR                    Pump, gear
  PID_PUMP_SCREW                   Pump, screw
  PID_PUMP_CAVITY                  Pump, progressive cavity
  PID_PUMP_PISTON                  Pump, reciprocating piston
  PID_PUMP_DIAPHRAGM               Pump, diaphragm
  PID_PUMP_JET                     Jet / ejector pump
  PID_COMPRESSOR                   Compressor, vacuum pump
  PID_COMPRESSOR_CENTRIFUGAL       Compressor, centrifugal
  PID_COMPRESSOR_PISTON            Compressor, reciprocating
  PID_COMPRESSOR_DIAPHRAGM         Compressor, diaphragm
  PID_COMPRESSOR_TURBO             Compressor, turbo type
  PID_COMPRESSOR_ROLLER_VANE       Compressor, roller vane
  PID_COMPRESSOR_ROTARY            Compressor, rotary piston
  PID_COMPRESSOR_SCREW             Compressor, screw
  PID_COMPRESSOR_LIQUID_RING       Compressor, liquid ring
  PID_COMPRESSOR_EJECTOR           Compressor, ejector / jet
  PID_BLOWER_FAN                   Blower, fan (general)

Conveying, feeding and engines
  PID_CONVEYOR                     Conveyor (general)
  PID_CONVEYOR_BELT                Conveyor, belt type
  PID_CONVEYOR_BELT_BOX            Conveyor, belt type in box
  PID_CONVEYOR_CHAIN               Conveyor, chain type, closed
  PID_CONVEYOR_SCREW               Conveyor, screw type, closed
  PID_CONVEYOR_VIBRATING           Conveyor, vibrating, closed
  PID_ELEVATOR_BUCKET              Elevator, bucket type
  PID_ELEVATOR_Z                   Elevator, bucket type Z-form
  PID_CONVEYOR_REVERSIBLE          Conveyor, belt type, reversible
  PID_CRANE                        Crane
  PID_LIFT                         Lift
  PID_FORKLIFT_MANUAL              Forklift, manually operated
  PID_FORKLIFT_TRUCK               Forklift truck
  PID_TRUCK_INDUSTRIAL             Industrial truck (general)
  PID_TANK_CAR                     Tank car, tank wagon
  PID_BOX_TRUCK                    Box truck
  PID_SHIP                         Ship
  PID_ROLLER_CONVEYOR              Roller conveyor
  PID_LOADING_ARM                  Loading arm
  PID_PALLETIZER                   Palletizer
  PID_BAG_FILLING                  Bag filling machine
  PID_PALLET_COVERING              Protective pallet covering
  PID_FEEDER                       Proportional feeder (general)
  PID_FEEDER_ROTARY_VALVE          Feeder, rotary valve type
  PID_FEEDER_ROTARY_TABLE          Feeder, rotary table type
  PID_FEEDER_METERING              Feeder, metering type
  PID_SPRAY_NOZZLE                 Spray nozzle
  PID_TURBINE                      Turbine (general)
  PID_GEAR                         Gear
  PID_GENERATOR                    Generator (general)
  PID_GENERATOR_AC                 Generator, AC
  PID_GENERATOR_DC                 Generator, DC
  PID_MOTOR                        Electric motor (general)
  PID_MOTOR_AC                     Electric motor, AC
  PID_MOTOR_DC                     Electric motor, DC

Valves
  PID_VALVE                        Valve (general)
  PID_VALVE_ANGLE                  Valve, angle type (general)
  PID_VALVE_3WAY                   Valve, three way (general)
  PID_VALVE_GLOBE                  Valve, globe type
  PID_VALVE_ANGLE_GLOBE            Valve, angle globe type
  PID_VALVE_3WAY_GLOBE             Valve, three way globe type
  PID_VALVE_BALL                   Valve, ball type
  PID_VALVE_ANGLE_BALL             Valve, angle ball type
  PID_VALVE_3WAY_BALL              Valve, three way ball type
  PID_VALVE_GATE                   Valve, gate type
  PID_VALVE_BUTTERFLY_1            Valve, butterfly type (form 1)
  PID_VALVE_BUTTERFLY_2            Valve, butterfly type (form 2)
  PID_VALVE_NEEDLE                 Valve, needle type
  PID_VALVE_CONTROL                Valve, control (continuous)
  PID_CHECK_VALVE                  Check valve (general)
  PID_CHECK_VALVE_GLOBE            Check valve, globe type
  PID_CHECK_SWING_1                Swing check valve (form 1)
  PID_CHECK_SWING_2                Swing check valve (form 2)
  PID_SAFETY_GLOBE                 Safety valve, spring, globe
  PID_SAFETY_ANGLE                 Safety valve, spring, angle
  PID_BREATHER_VALVE               Breather valve

Fittings and piping
  PID_RUPTURE_DISC                 Rupture disc
  PID_FLAME_ARRESTOR               Flame arrestor
  PID_FLAME_ARRESTOR_EXPL          Flame arrestor, explosion-proof
  PID_FLAME_ARRESTOR_DET           Flame arrestor, detonation-proof
  PID_FLAME_ARRESTOR_FIRE          Flame arrestor, fire-resistant
  PID_FLAME_ARRESTOR_FIRE_DET      Flame arrestor, fire + detonation
  PID_VIEWING_GLASS                Viewing glass
  PID_VIEWING_GLASS_LIGHT          Viewing glass with lighting
  PID_SILENCER                     Silencer
  PID_INJECTOR                     Mixing nozzle, injector
  PID_COMPENSATOR                  Compensator
  PID_STRAINER                     Strainer
  PID_STRAINER_CONE                Strainer, cone type
  PID_ORIFICE_PLATE                Orifice plate
  PID_BLIND_DISC                   Blind disc
  PID_OPEN_DISC                    Open disc
  PID_DISC_BLIND_INTERCHANGE       Interchangeable disc (blind)
  PID_DISC_OPEN_INTERCHANGE        Interchangeable disc (open)
  PID_VENT                         Vent (to atmosphere)
  PID_FUNNEL                       Funnel
  PID_STEAM_TRAP                   Self-operating release (steam trap)
  PID_FLANGE_CONN                  Flanged connection
  PID_REDUCER                      Reducer
  PID_HOSE                         Hose
  PID_COUPLING                     Coupling
  PID_COUPLING_CLAMPED             Clamped flange coupling
  PID_BREAKTHROUGH                 Breakthrough
  PID_FLANGE_DUMMY                 Flanged dummy cover
  PID_FLANGE_SINGLE                Single flange
  PID_DUMMY_COVER                  Dummy cover
  PID_PIPELINE                     Pipeline
  PID_PIPELINE_SECONDARY           Secondary pipeline
  PID_FLOW_ARROW                   Flow direction arrow
  PID_SLOPE                        Slope
  PID_SIPHON                       Siphon
  PID_TRACER                       Tracer for heating or cooling
  PID_PIPELINE_JACKETED            Jacketed pipeline
  PID_PIPELINE_HEATED_INSULATED    Piping, heated/cooled and insulated
  PID_PIPELINE_INSULATED           Pipeline with thermal insulation

Apparatus elements and internals
  PID_ELEM_SUPPORT_LEG             Support leg
  PID_ELEM_SUPPORT_BRACKET         Support bracket
  PID_ELEM_SUPPORT_SKIRT           Support skirt
  PID_ELEM_SUPPORT_RING            Support ring
  PID_ELEM_MANHOLE                 Manhole
  PID_ELEM_SOCKET                  Socket, connection nozzle
  PID_ELEM_TRAY                    Tray (general)
  PID_INT_TRAY_BAFFLE              Tray with baffle
  PID_INT_TRAY_BUBBLE_CAP          Tray, bubble-cap type
  PID_INT_TRAY_VALVE               Tray, valve type
  PID_INT_TRAY_SIEVE               Sieve tray, screen
  PID_INT_FILTER_INSERT            Filter insert (general)
  PID_INT_FLUID_BED                Fluidized bed
  PID_INT_PACKING                  Packing
  PID_AGITATOR                     Agitator, stirrer (general)
  PID_AGITATOR_FLAT                Agitator, flat blade paddle
  PID_AGITATOR_GATE                Agitator, gate paddle
  PID_AGITATOR_CROSS_BEAM          Agitator, cross-beam
  PID_AGITATOR_ANCHOR              Agitator, anchor
  PID_AGITATOR_HELICAL             Agitator, helical
  PID_AGITATOR_IMPELLER            Agitator, impeller
  PID_AGITATOR_PROPELLER           Agitator, propeller
  PID_AGITATOR_DISC                Agitator, disc
  PID_AGITATOR_TURBINE             Agitator, turbine
  PID_CHAR_GRAVITY                 Gravity / settling type
  PID_CHAR_ELECTROSTATIC           Electrostatic type
  PID_CHAR_ELECTROMAGNETIC         Electromagnetic type
  PID_CHAR_DISC                    Disc type
  PID_CHAR_CRUSHING                Crushing
  PID_CHAR_GEAR                    Gear type, gearwheels
  PID_CHAR_HAMMER                  Hammer type
  PID_CHAR_IMPACT                  Impact type
  PID_CHAR_JAW                     Jaw type
  PID_CHAR_LIQUID                  Liquid / wet type
  PID_CHAR_ROLLER                  Roller type
  PID_CHAR_CONE                    Cone type
  PID_CHAR_JET                     Jet type
  PID_CHAR_VIBRATION               Vibration type

Free to use and modify in your own projects, including commercial ones. Provided as is, without warranty.
https://cadxchange.net/resources/symbol-libraries/pid-equipment-iso-10628
