Free AutoCAD plumbing and fire protection symbols (DWG): pipes, drains, sprinklers, alarms
229 plumbing, drainage and fire protection symbols as ready-to-use AutoCAD blocks for plans, riser diagrams and schematics: pipe fittings and supports, plumbing valves and backflow preventers, floor drains, cleanouts and manholes, water heaters and pumps, pipe service lines, sprinklers and nozzles, alarm check and deluge valves, hydrants and hose reels, extinguishers, fire pumps, smoke and heat detectors, call points, sounders, alarm panels and escape symbols. Each block carries a tag and invisible schedule attributes.
Free to use and modify in your own projects, including commercial ones. The ZIP holds one plain DWG file in AutoCAD 2018 format and a README; no add-in needed. Provided as is, without warranty.
All 229 symbols
229 of 229 symbols
Elbow, 90 degrees
PLF_ELBOW_90Attributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Elbow turned up
PLF_ELBOW_UPAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Elbow turned down
PLF_ELBOW_DOWNAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Tee
PLF_TEEAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Tee, branch up
PLF_TEE_UPAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Tee, branch down
PLF_TEE_DOWNAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Cross
PLF_CROSSAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Wye (Y branch)
PLF_WYEAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Reducer, concentric
PLF_REDUCER_CONCAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Reducer, eccentric
PLF_REDUCER_ECCAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Union
PLF_UNIONAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Flanged joint
PLF_FLANGEAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Blind flange
PLF_FLANGE_BLINDAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Cap
PLF_CAPAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Plug
PLF_PLUGAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Expansion joint (bellows)
PLF_EXPANSION_JOINTAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Expansion loop
PLF_EXPANSION_LOOPAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Flexible connector
PLF_HOSE_FLEXAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipe anchor
PLF_ANCHORAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipe guide
PLF_GUIDEAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipe hanger
PLF_HANGERAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipe sleeve through wall
PLF_SLEEVEAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipes crossing, not joined
PLF_CROSSINGAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipes crossing, joined
PLF_CROSSING_JOINEDAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Direction of flow
PLF_FLOWAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipe slope
PLF_SLOPEAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipe break line
PLF_BREAKAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Pipe in casing
PLF_CASINGAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Gate valve
PLF_VALVE_GATEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Globe valve
PLF_VALVE_GLOBEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Ball valve
PLF_VALVE_BALLAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Butterfly valve
PLF_VALVE_BUTTERFLYAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Check valve
PLF_VALVE_CHECKAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Needle valve
PLF_VALVE_NEEDLEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Plug valve
PLF_VALVE_PLUGAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Pinch valve
PLF_VALVE_PINCHAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Diaphragm valve
PLF_VALVE_DIAPHRAGMAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Balancing valve
PLF_VALVE_BALANCINGAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Three-way valve
PLF_VALVE_3WAYAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Pressure regulator, gas
PLF_VALVE_REGULATORAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Valve, general
PLF_VALVE_GENERALAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Gate valve, hand-operated
PLF_VALVE_GATE_HANDAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Gate valve, diaphragm actuator
PLF_VALVE_GATE_PNEUAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Gate valve, motor actuator
PLF_VALVE_GATE_MOTORAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Gate valve, hydraulic actuator
PLF_VALVE_GATE_HYDAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Globe valve, diaphragm actuator
PLF_VALVE_GLOBE_PNEUAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Globe valve, motor actuator
PLF_VALVE_GLOBE_MOTORAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Ball valve, motor actuator
PLF_VALVE_BALL_MOTORAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Control valve, fail closed
PLF_VALVE_FAIL_CLOSEDAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Control valve, fail open
PLF_VALVE_FAIL_OPENAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Butterfly valve, bow-tie form
PLF_VALVE_BUTTERFLY_BTAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Check valve, hinge form
PLF_VALVE_CHECK_HINGEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Swing check valve
PLF_VALVE_CHECK_SWINGAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Stop check valve
PLF_VALVE_STOP_CHECKAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Valve, flanged ends
PLF_VALVE_FLANGEDAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Angle valve
PLF_VALVE_ANGLEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Angle globe valve
PLF_VALVE_ANGLE_GLOBEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Solenoid valve
PLF_VALVE_SOLENOIDAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Motorised valve
PLF_VALVE_MOTORAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Pressure reducing valve
PLF_VALVE_PRVAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Relief valve
PLF_VALVE_RELIEFAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Temperature and pressure relief valve
PLF_VALVE_TPAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Thermostatic mixing valve
PLF_VALVE_MIXINGAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Hose bibb
PLF_HOSE_BIBBAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Float valve
PLF_VALVE_FLOATAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Backflow preventer, RPZ
PLF_BACKFLOW_RPZAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Backflow preventer, double check
PLF_BACKFLOW_DCAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Vacuum breaker
PLF_VACUUM_BREAKERAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Water hammer arrestor
PLF_ARRESTORAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Water meter
PLF_METERAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Strainer
PLF_STRAINERAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Pressure gauge
PLF_GAUGEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGEND_CONNECTIONMATERIALMANUFACTURERMODELREMARKSDESC
Floor drain
PLF_FLOOR_DRAINAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Floor drain with trap primer
PLF_FLOOR_DRAIN_TRAPAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Floor sink
PLF_FLOOR_SINKAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Linear shower drain
PLF_SHOWER_DRAINAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Area drain
PLF_AREA_DRAINAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Roof drain
PLF_ROOF_DRAINAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Roof drain, overflow
PLF_ROOF_DRAIN_OFAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Cleanout, floor
PLF_CLEANOUT_FLOORAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Cleanout, end of run
PLF_CLEANOUT_ENDAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Cleanout to grade
PLF_CLEANOUT_GRADEAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Manhole, sanitary
PLF_MANHOLE_SANAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Manhole, storm
PLF_MANHOLE_STORMAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Inspection chamber
PLF_INSPECTIONAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Catch basin
PLF_CATCH_BASINAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Grease interceptor
PLF_GREASE_INTAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Oil interceptor
PLF_OIL_INTAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Sump pit with pump
PLF_SUMPAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Septic tank
PLF_SEPTICAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Vent through roof
PLF_VENT_ROOFAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Soil stack
PLF_STACK_SOILAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Waste stack
PLF_STACK_WASTEAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Rainwater pipe
PLF_STACK_RWPAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Riser, cold water
PLF_RISER_CWAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Riser, hot water
PLF_RISER_HWAttributes
TAGSIZESERVICEMATERIALPRESSURE_RATINGELEVATIONREMARKSDESC
Backwater valve
PLF_BACKWATERAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
P-trap
PLF_TRAP_PAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Air gap, indirect waste
PLF_AIR_GAPAttributes
TAGSIZEDRAIN_TYPELOAD_CLASSMATERIALINVERT_LEVELMANUFACTURERMODELREMARKSDESC
Water heater, storage
PLF_WATER_HEATERAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Water heater, instantaneous
PLF_WATER_HEATER_TANKLESSAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Pump, in-line
PLF_PUMP_INLINEAttributes
TAGSERVICEFLOW_M3HHEAD_MMOTOR_KWVOLTAGESPEED_CONTROLMANUFACTURERMODELREMARKSDESC
Booster set, duplex
PLF_PUMP_BOOSTERAttributes
TAGSERVICEFLOW_M3HHEAD_MMOTOR_KWVOLTAGESPEED_CONTROLMANUFACTURERMODELREMARKSDESC
Pump, sump / submersible
PLF_PUMP_SUMPAttributes
TAGSERVICEFLOW_M3HHEAD_MMOTOR_KWVOLTAGESPEED_CONTROLMANUFACTURERMODELREMARKSDESC
Expansion vessel, diaphragm
PLF_TANK_EXPANSIONAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Pressure vessel
PLF_TANK_PRESSUREAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Storage tank (plan)
PLF_TANK_STORAGEAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Water softener
PLF_SOFTENERAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Water filter
PLF_FILTERAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
UV disinfection unit
PLF_UVAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Solar collector
PLF_SOLARAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Cold water
PLF_LINE_CWAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Hot water
PLF_LINE_HWAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Hot water return
PLF_LINE_HWRAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Tempered water
PLF_LINE_TWAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Mains water
PLF_LINE_MWAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Non-potable water
PLF_LINE_NPWAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Reclaimed water
PLF_LINE_RWAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Sanitary drain
PLF_LINE_SANAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Waste
PLF_LINE_WASTEAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Grey water
PLF_LINE_GREYAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Vent
PLF_LINE_VENTAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Storm drain
PLF_LINE_STORMAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Rainwater
PLF_LINE_RAINAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Pumped drain
PLF_LINE_PUMPEDAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Natural gas
PLF_LINE_GASAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Compressed air
PLF_LINE_AIRAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Vacuum
PLF_LINE_VACAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Sprinkler main
PLF_LINE_FSAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Sprinkler branch
PLF_LINE_FSBAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Standpipe
PLF_LINE_FSPAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Fire hydrant main
PLF_LINE_FHAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Foam solution
PLF_LINE_FOAMAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Sprinkler drain
PLF_LINE_DRAINAttributes
TAGSIZEMATERIALPRESSURE_RATINGINSULATIONELEVATIONREMARKSDESC
Sprinkler, upright
PLF_SPR_UPRIGHTAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, pendant
PLF_SPR_PENDANTAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, recessed pendant
PLF_SPR_RECESSEDAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, concealed pendant
PLF_SPR_CONCEALEDAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, dry pendant
PLF_SPR_DRYAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, sidewall
PLF_SPR_SIDEWALLAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, ESFR
PLF_SPR_ESFRAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, residential
PLF_SPR_RESIDENTIALAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler, extended coverage
PLF_SPR_EXTENDEDAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Nozzle, open spray (deluge)
PLF_SPR_OPENAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Nozzle, water mist
PLF_NOZZLE_MISTAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Nozzle, gas agent
PLF_NOZZLE_GASAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Nozzle, foam
PLF_NOZZLE_FOAMAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Sprinkler drop (elevation)
PLF_SPR_DROPAttributes
TAGK_FACTORTEMP_RATINGRESPONSEFINISHORIFICE_MMCOVERAGE_M2ZONEMANUFACTURERMODELDESC
Gate valve, OS&Y
PLF_FV_OSYAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Post indicator valve
PLF_FV_PIVAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Butterfly valve, supervised
PLF_FV_BUTTERFLY_TSAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Check valve, fire service
PLF_FV_CHECKAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Alarm check valve (wet)
PLF_FV_ALARMAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Dry pipe valve
PLF_FV_DRYAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Pre-action valve
PLF_FV_PREACTIONAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Deluge valve
PLF_FV_DELUGEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Pressure reducing valve, fire
PLF_FV_PRVAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Test and drain valve
PLF_FV_TESTAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Inspector's test connection
PLF_FV_ITCAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Waterflow switch
PLF_SW_FLOWAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Pressure switch
PLF_SW_PRESSUREAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Tamper switch
PLF_SW_TAMPERAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Siamese connection (FDC)
PLF_FV_SIAMESEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Sprinkler riser
PLF_FV_RISERAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Standpipe riser
PLF_FV_STANDPIPEAttributes
TAGSIZEVALVE_TYPEPRESSURE_RATINGSUPERVISEDEND_CONNECTIONZONEMANUFACTURERMODELDESC
Fire hydrant, pillar
PLF_HYD_PILLARAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Fire hydrant, underground
PLF_HYD_UNDERAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Fire hydrant, wall
PLF_HYD_WALLAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Landing valve, hose outlet
PLF_HYD_HOSE_VALVEAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Hose reel
PLF_HYD_HOSE_REELAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Fire hose cabinet
PLF_HYD_CABINETAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Dry riser inlet
PLF_HYD_DRY_INLETAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Foam inlet
PLF_HYD_FOAMAttributes
TAGTYPEOUTLET_SIZEFLOW_LPMPRESSURE_BARLOCATIONZONEMANUFACTURERMODELREMARKSDESC
Extinguisher, water
PLF_EXT_WATERAttributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Extinguisher, foam
PLF_EXT_FOAMAttributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Extinguisher, CO2
PLF_EXT_CO2Attributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Extinguisher, dry powder
PLF_EXT_POWDERAttributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Extinguisher, wet chemical
PLF_EXT_WETCHEMAttributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Extinguisher, general
PLF_EXT_GENERICAttributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Extinguisher cabinet
PLF_EXT_CABINETAttributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Fire blanket
PLF_FIRE_BLANKETAttributes
TAGAGENTRATINGCAPACITYMOUNTINGLOCATIONNEXT_SERVICEMANUFACTURERMODELDESC
Fire pump, electric
PLF_FPUMP_ELECAttributes
TAGSERVICEFLOW_M3HHEAD_MMOTOR_KWVOLTAGESPEED_CONTROLMANUFACTURERMODELREMARKSDESC
Fire pump, diesel
PLF_FPUMP_DIESELAttributes
TAGSERVICEFLOW_M3HHEAD_MMOTOR_KWVOLTAGESPEED_CONTROLMANUFACTURERMODELREMARKSDESC
Jockey pump
PLF_FPUMP_JOCKEYAttributes
TAGSERVICEFLOW_M3HHEAD_MMOTOR_KWVOLTAGESPEED_CONTROLMANUFACTURERMODELREMARKSDESC
Fire pump set (duty / standby)
PLF_FPUMP_SETAttributes
TAGSERVICEFLOW_M3HHEAD_MMOTOR_KWVOLTAGESPEED_CONTROLMANUFACTURERMODELREMARKSDESC
Fire water tank
PLF_FTANK_WATERAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Pressure tank, fire
PLF_FTANK_PRESSUREAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Foam concentrate tank
PLF_FTANK_FOAMAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Gas agent cylinder
PLF_FTANK_AGENTAttributes
TAGSERVICECAPACITYFLOW_M3HPRESSURE_BARPOWER_KWVOLTAGEMANUFACTURERMODELREMARKSDESC
Smoke detector
PLF_DET_SMOKEAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Heat detector
PLF_DET_HEATAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Heat detector, rate of rise
PLF_DET_HEAT_RORAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Multi-sensor detector
PLF_DET_MULTIAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
CO detector
PLF_DET_COAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Flame detector
PLF_DET_FLAMEAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Gas detector
PLF_DET_GASAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Duct smoke detector
PLF_DET_DUCTAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Beam detector pair
PLF_DET_BEAMAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Aspirating detector
PLF_DET_ASPIRATINGAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Linear heat cable
PLF_DET_LINEAR_HEATAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Manual call point
PLF_DET_MCPAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Manual call point, break glass
PLF_DET_MCP_GLASSAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Waterflow alarm device
PLF_DET_WATERFLOWAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Alarm bell
PLF_ALM_BELLAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Sounder
PLF_ALM_SOUNDERAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Strobe
PLF_ALM_STROBEAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Sounder with strobe
PLF_ALM_HORN_STROBEAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Voice alarm speaker
PLF_ALM_SPEAKERAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Fire alarm control panel
PLF_ALM_PANELAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Repeater panel
PLF_ALM_REPEATERAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Annunciator
PLF_ALM_ANNUNAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Monitor module
PLF_ALM_MONITORAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Control module
PLF_ALM_CONTROLAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Isolator module
PLF_ALM_ISOLATORAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Door holder / release
PLF_ALM_DOOR_HOLDAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Firefighter telephone
PLF_ALM_PHONEAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Manual release station
PLF_ALM_RELEASEAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Abort station
PLF_ALM_ABORTAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Alarm loop cable
PLF_ALM_LOOPAttributes
TAGADDRESSLOOP_ZONELOCATIONDEVICE_TYPEVOLTAGEMANUFACTURERMODELREMARKSDESC
Exit sign
PLF_ESC_EXITAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Exit sign, arrow left
PLF_ESC_EXIT_LEFTAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Exit sign, arrow right
PLF_ESC_EXIT_RIGHTAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Emergency luminaire
PLF_ESC_LIGHTAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Emergency spot lights, twin
PLF_ESC_LIGHT_TWINAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Escape route
PLF_ESC_ROUTEAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Assembly point
PLF_ESC_ASSEMBLYAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Fire compartment boundary
PLF_ESC_COMPARTMENTAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Fire door mark
PLF_ESC_DOOR_EIAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Smoke control zone
PLF_ESC_SMOKE_CTRLAttributes
TAGDESCRIPTIONLOCATIONMOUNTINGBATTERY_DURATIONMANUFACTURERMODELREMARKSDESC
Attributes for parts lists
Every block has a visible tag next to the symbol (for example FD-1 for a floor drain, SP-12 for a sprinkler, MCP-3 for a manual call point). The data you put on a schedule are invisible attributes: SIZE, VALVE_TYPE and PRESSURE_RATING for valves; K_FACTOR, TEMP_RATING and RESPONSE for sprinklers; ADDRESS, LOOP_ZONE and LOCATION for detectors and alarm devices; AGENT, RATING and CAPACITY for extinguishers; FLOW_M3H and HEAD_M for pumps.
Export the blocks of a drawing to Excel with BlockSync to build a sprinkler schedule or a device list, check it against the drawing and write the corrections back in one run, with preview and backup.
How to use the library
- Unzip the file and open the DWG. Copy the symbols you need into your plan, or drag the blocks in from DesignCenter (ADCENTER).
- The symbols are drawn at the plotted size in millimetres (text 2 mm). Insert them at the plot scale of your drawing, for example scale 100 on a 1:100 plan, and they print at the size they are drawn.
- Pipe and valve symbols lie on a horizontal pipe centre line with short stubs: insert one on a pipe and rotate it to the direction of the pipe. Plan symbols such as drains, sprinklers, detectors and hydrants are centred on the insertion point.
- The pipe service blocks are line samples with the service code in the middle (CW, HW, SAN, FS and others). Solid, dashed and dotted lines separate supply, drainage and vent services; replace the code to match the legend of your project.
About the conventions
Plumbing and fire protection symbols are not fixed by a single standard: practice differs by country, discipline and office. Related standards are NFPA 170 for fire safety symbols and ISO 6412 for the simplified representation of pipelines, and most offices keep their own legend.
The blocks are our own drawings after common drafting conventions, not copies of a standard, and the library is not certified. Check the symbols against the legend of your project or the requirements of the authority, and change a block if yours differs.
Frequently asked questions
- Do the symbols follow NFPA 170 or a national standard?
- They follow common drafting conventions, so most of them will look familiar, but the library is not a certified implementation of NFPA 170 or of a national standard. Compare them with the legend your project or authority requires and change a block where it differs.
- Can I use the blocks for a sprinkler schedule or a device list?
- Yes. The sprinkler blocks have K-factor, temperature rating, response and coverage attributes, and the detector and alarm blocks have address, loop and location. Export them with BlockSync to Excel, complete the schedule and write it back to the drawing.
- Can I use the symbols in commercial projects?
- Yes. They are free to use and modify in your own projects, including commercial ones. They are provided as is, without warranty.
- Are toilets, basins and other fixtures included?
- No, this library covers the piping, valves, drainage, equipment and fire protection. The sanitary fixtures in plan and elevation are in the architectural plan symbol library, so use both libraries together on a plumbing plan.
- Can I change a symbol or add attributes?
- Yes. Open the DWG, edit a block with BEDIT to change it or add attributes, and save. To update drawings that already contain the block, run ATTSYNC or replace the block. Make a backup first: attribute values can be lost if ATTSYNC is used carelessly.
Count the symbols and build a parts list
Because ratings and part numbers are attributes, the symbols of a whole project can be counted and listed without opening the drawings. Export the blocks to Excel, total them with a pivot table and write corrections back in one run, with preview and backup.
See how to count blocks with BlockSync