Piping Inst Symbols

APPENDIX – 1 1.

Miscellaneous Equipment (GROUP U)

MU001

MU002

MU003

MU004

Pig Launcher / Receiver (Horizontal) Pig Launcher / Receiver (Vertical)

Wellhead

Flare

APPENDIX – 1

2. Atmospheric Storage (GROUP T) MT001

Open Tank MT005

Dome Roof Tank

MT002

Conical Roof Tank MT006

Sludge Sump Tank

MT003

MT004

Floating Roof Tank MT007

Spheroid

Fibre Glass Tank

APPENDIX – 1 2.

Tanks, Pressure Storage Vessels & Columns (GROUP T)

MT008

Tray column Basic symbol MT011

Knock-Out Drum (with demister pad)

MT009

Fluid Contacting Vessel Basic Symbol MT012

Fuel Gas Scrubber

MT010

Packed column Basic symbol

APPENDIX – 1

2.

GROUP T

MT013

Vessel, Basic Symbol MT017

Vessel with dome MT021

Collection Tank

MT014

MT015

Vessel with dome and sump MT018

K.O. Drum and condensative separator

MT016

Sphere MT019

Sump Casing

Test / Production Separator MT020

Sump Tank

APPENDIX – 1 3. Heat Transfer Equipment (GROUP E) ME001

Air cooled heat exchanger basic symbol ME005

Cooling Coil Basic Symbol

ME009

Heat Exchanger/ cooler/condenser fixed tube sheet ME013

Horizontal re-boiler fixed tube sheet

ME002

Heater Basic symbol ME006

Heating Coil Basic symbol

ME003

Cooler condenser Basic symbol ME007

Heat Exchanger/ cooler/condenser with floating head

ME004

Heat Exchanger Basic symbol ME008

Heat Exchanger/ cooler/condenser U-Tube

ME010

ME011

Cooler / condenser with floating head and cover plate

Vertical heat exchanger Vertical heat exchanger / re-boiler tubular / re-boiler tubular steam generator / cooler steam generator / cooler / condenser fixed tube / condenser floating sheet head

ME014

ME015

Kettle-type Vaporizer floating head

Kettle-type Vaporizer floating head

ME012

ME016

Kettle-type Vaporizer fixed tube sheet

Heat Transfer Equipment (GROUP E) – Cont’d/ME017

Plate heat exchanger ME021

Air-cooled heat exchanger forced draught, with automatic variable pitch fans ME024

Propane Evaporator

ME018

Double – pipe heat exchanger ME022

Air-cooled heat exchanger, induced draught

ME025

ME019

Box cooler

Air-cooled heat exchanger, forced draught, with automaticvariable pitch fans ME026

Lube Oil Cooler ME029

Heat Exchanger/ cooler/condenser U-Tube

ME027

Tube Exchange ME030

Coil Bank Basic Symbol Fuel Gas Electrical Heater

Air-cooled heat exchanger forced draught

ME023

Gas Chiller ME028

ME020

Furnace, Heater Basic Symbol

5.

Jets (GROUP J)

MJN001

Ejector / Injector / Educator, Basic Symbol

MJN002

MJN003

Air Ejector Safety Shower and Eye bath

6. Compressors, Blowers, Fans And Pumps (GROUP K) MK001 MK002 MK003

Compressor, Blower Fan Basic Symbol MK005

Centrifugal pump or centrifugal fan MK006

Positive Displacement Pump (Reciprocating) MK009

Centrifugal Compressor, Turbine MK010

Start-up Air Compressor Two-Stage, Electric Motor Driven Reciprocating Compressor MK013

Hand Pump MK017

MK014

Water Pump MK018

Post Pump

Pneumatic Operated reciprocating Pump

Rotary Compressor Single -Stage O: Centrifugal A: Axial Flow P: Positive displacement MK007

Blower, motor driven

MK011

Fuel Oil Pump

MK016

Gas Operated Hydraulic Pump MK019

Vacuum Pump

MK004

Blower or Fan

MK008

Compressor: Reciprocating (Basic Symbol) MK012

Jockey Pump

MK016

Submersible multistage centrifugal pump (motor driven) in well

7. Motors, Turbines & Generators M0-001

Electric Motor MO-004

Gas Turbine

MO-001A

Electric Motor MO-005

Diesel Generator

MO-002

Steam Turbine MO-006

MO-003

Alternator MO-007

Turbo Gas Generator Turbo Generator

APPENDIX -1 8. PIPING 8.1 Pipes (GROUP L) ML001 ML002

Main Process Line ML005

Future Line ML009

ML003

Secondary Process Line & Utility Lines ML006

ML004

Existing Line ML007

Match Line or Battery Limits ML010

Existing Line (underground) ML008

Monitor Nozzle Straight Tip not adjustable ML011

Monitor with adjustable nozzle 250 GPM @ 100 psi ML012 FALL

Blind Flange ML013

Flexible Hose ML017

Plugged End ML014

Capped End ML015

Spade ML019

ML021

Purge Connection

ML022

Chemical Seal Self Sealing Hose Coupling

ML020 UG

PC

Hose Connection

ML016

Spectacle Blind

Hammer Blind ML018

Slopping Line

AG

AG-Above Ground UG-Under Ground ML023

A1

B1

Change In Piping Class ML024

Hose Reel

‘MONOBLOC’ Connector or Insulation Flange set

ML025

ML026

Electrically Traced Line ML029

Steam Traced Line ML030

Jacketed Line ML033

“T” Type Strainer ML034

ML027

ML028

Insulated & Traced ML031

Insulated Line ML032

“Y” Type Strainer

ML035

Inline (Temporary) Strainer ML036

Flame Arrestor Air Intake Filter ML037

Duplex Filter ML038

Flame Arrestor (Vessel Mounted) ML041

Rupture Disc for Pressure Relief ML042

Sight Glass ML045

Continuous Drainer

Basket Strainer or Filter ML039

Open Drain Gully with Liquid Seal

Silencer

Rupture Disc for Vacuum ML043

Flow Glass ML046

ML040

ML044

Tundish ML047

Deck Drain Gully

Automatic Drain ML048

Plate Type Expansion

ML049

ML050

Expansion Bellow ML053

ML051

Spray Device ML054

Spray Nozzle

ML057

ML061

Spray Nozzle ML055

Fire Hydrant

ML058

Exhaust Head

ML052

ML056

Safety Shower & Eyewash ML059

Deluge ML060

Open Vent

Steam Exhaust Head ML062

Spray Nozzle

ML063

Vent with Weather Hood ML064

0

xxxxxxxxx Air Vent VAC/Breaker ML065

ML066

Termination Point ML069

ML067

Hose Station ML068

Liquid Trap / Steam Siphon ML070

Self Draining Slope

Battery Limit

ML071

Flow Straightening Vanes

Special Piping item ML072

Line Mixer

ML073

ML074

Weir

ML075

ML076

Vortex Breaker Vortex Breaker with Vertical Upstand

ML077

ML078

Flume

Removal Spool

ML081

ML079

ML082

Louvers ML084A

Sample Connection ML088

Open Head, Fire Protection System

Ejector or Eductor ML085

Line Continuation onto Another Drawing ML089

Closed head, Fire Protection System

Vortex Meter ML080

Bursting / Rupture Disc ML083

Pulsation Damper ML084

Sample Cooler ML086

Sample Connection ML087

Chemical Injection Point ML090

Wet Barrel Fire Hydrant with 2 ½” Outlets & 1-4 ½” Outlet W/curb Box Valve ML091

Eyewash

ML092

Trap Drain ML096

Sand Trap

ML093

Trapped Vent ML097

ML094

Steam Trap Assembly ML098

Cycle Separator

ML095

Gas Trap ML099

APPENDIX -1 8.2 Valves (GROUP V) MV-100

MV-101

Butterfly Valve MV-104

MV-102

Post Indicating Butterfly Valve MV-105

MV-103

Needle Valve MV-106

MV-107

Valve with Plug Wedge Plug Valve

MV-108

3 Way Valve

MV-109

MV-110

TSO

FLO

Valve Normally Opened (OR Normally Closed

Tight Shut Off

Locked in fully Open Position

Angle Valve

MV-116

Excess Flow Check Valve

MV-113

Adjustable Choke (Manual) MV-117

Parallel Slide Valve

CSO (CSC) LO (LC) Valve Carseal Open (OR Carseal Close) Valve Locked Open (OR Locked Close) MV-111

NO (NC)

MV-112

Plug Valve

MV-114

4 way Valve MV-118

Slide Valve (Manual)

Diaphragm Valve MV-115

PSV-with 2 Outlet

MV-119

Slide Valve (Motorized)

MV-120

Straight Through Bleed or Relief Valve

MV-124

MV-121

Pinch Valve

MV-125

MV-122

Relief Valve (Pilot Operated) MV-126

MV-123

Automatic Air Vent MV-127

Boiler Blow down Valve Air Release Valve MV-128

Flush Bottom Tank Valve MV-132

Ball Valve

MV-136

Screw Down Check Valve

Test Ring (W/Bleed Valve) MV-129

Knife Valve MV-133

Gate Valve

MV-137

MV-130

Foot Valve & Strainer MV-134

Motor Operated Gate Valve MV-138

Globe Valve Automatic Re-circulation Check Valve

Test Ring

MV-131

Interlock Device MV-135

Check Valve

MV-139

Quick Opening Globe Valve

9. Gravity And Mechanical Separators (GROUP S) MS001

MS002

Filter, Basic symbol

Centrifuge, Basic Symbol

MS005

MS003

MS004

Decanting Centrifuge MS007

Cyclone or Hydrocylone MS010

Screen

MS008

Cartridge Filter MSN001

Filter & Coalescer

Bowl Centrifuge

MSN002

Filter

Basket Filter