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Process Valves
Symbols / Icons forPlanners, Designers
and Piping Engineers
Valves More&
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Table of contents
Explanation and important notes Copyright / right of use 3 - 4
Symbols for process valves Valve types/bodies 6
Symbols for valve actuators Actuator types 7
Globe valves, straight through Straight seat 2/2 way 11
Globe valves, multi-port Double seat 3/2 way 13
Globe valves, angled design Straight seat 2/2 way 14
Diaphragm valves, straight through 2/2 way 15
Diaphragm valves for tank mounting 2/2 way 16
Diaphragm valves, angled design 2/2 way 17
Diaphragm valves, T design 3/2 way 18
Ball valves, straight through 2/2 way 20
Angle seat 2/2 way 12
Sample schematic Example 5
Symbols for accessories 8
Symbols for position and process controllers for process valves 10
Globe valves, straight through
Diaphragm valves, full bore 2/2 way 19
Ball valves, multi-port 3/2 way with T -passage 21
Ball valves, multi-port 3/2 way with L- passage 22
Butterfly valves 2/2 way 23
Swing check valve 2/2 way 24
Gate valves 2/2 way 25
Pinch valves 2/2 way 26
Plug valves, straight through 2/2 way 27
Plug valves, multi-port 3/2 way with T-passage 28
Plug valves, multi-port 3/2 way with L-passage 29
Measurement devices Process control 30
Examples 31 - 34
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Explanation/ important information
New logical symbols for process valves
Versions
Copyright
Right of use
Following many requests by plant designers and engineers to obtain a list ofwe have looked into the host of available norms and printed data concerning
this topic and established this document. We found out that although a large number ofsymbols exist in the various norms they are only particularly suited to the relevant area ofapplication of the norm (e.g. norm for fire safety installations DIN 19 227 part 2, norm forthermal electric stations DIN 2481 and EN ISO 10 628 flow chart for process plant). In somecases different icons are used for one and the same valve type and actuator. For this reasonthis system of symbols has been developed to particularly meet the requirements of plantengineering and process valve systems and to suit their relevant applications.
The symbols will also be made available in electronic form in future to support CAD systems .For workshops and sites they will also be available on a shrink-wrapped memo card. Theelectronic version is expected to be available in summer 2004.
GEM Gebrder Mller GmbH & Co. KG, Fritz-Mller-Strae 6-8 , 74653 Ingelfingen-
Criesbach, Germany, has the copyright and right of use. Ralph Kroupa is the author,responsible for the contents.
We herewith grant permission for personal and commercial use of the contents of thisdocument free of charge and for planning and representation of plant in any form as well asforwarding it to third parties for this purpose (user group 1) with the exception of competitors ofGEM and manufacturers/distributors of process, control and regulating valves (user group2). A permission/partial permission can be applied for at GEM Marketing Services when theexact purpose of use is indicated. Permission for publication in brochures, pamphlets,
magazines, books, other printed matters or electronic media must also be applied for atGEM Marketing Services ( user group 1 and 2). All rights reserved.
symbols forprocess valves
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Legend / File names / GB
Valve type
0000_00
Actuator
00
Control function
00_ _
Valve type Actuator
Globe valve VGS MHVGA MGVGM SEVGC PP
PDDiaphragm valve VDS HPVDB HDVDC MEVDTVDFS
Ball valve VBSVBM_TVBM_L
Butterfly valve VBFSSwing check valve VBFS_PO
Gate valve VGAS 00Pinch valve VHS 10Plug valve VPS 20
VPM_T 30VPM_L 61
62636465
- straight seat manual, hand operatedGlobe valve - angle seat manual, gear operatedGlobe valve - multi-port electro-solenoidGlobe valve - angled design pneumatic, piston controlled
pneumatic, membrane controlled- straight through hydraulic, piston controlledDiaphragm valve - tank mounting hydraulic, membrane controlledDiaphragm valve - angled design operated by electric motor Diaphragm valve - T-designDiaphragm valve - full bore
- straight throughBall valve - multi-port / T-passageBall valve - multi-port/ L-passage
- straight through
- straight through Manual operation- straight through Normally closed
- straight through Normally openPlug valve - multi-port / T-passage Double actingPlug valve - multi-port / L-passage Motorized
Motorized with position sensorMotorized with position controllerMotorized with process controllerMotorized with process controllerand field bus connection
Control function
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Sample schematic
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Symbols for process valves
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Valve
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Symbols for valve actuators
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FB
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Additional symbols
P P P
P PP
FB FB
Air
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Examples
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P
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Position/Process controllers
Examples
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Examples
P
Air
FB P
P
P
FB
DC24
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Globe valves, straight seat 2/2 waystraight through design
FB
VGS_MH_00MGSEPPPDME
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Globe valves, angle seat 2/2 waystraight through design
VGA_MH_00SEPPPDME
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Globe valves / double seat 3/2 waymulti-port design
VGM_MH_00MGSEPPPDME
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FB
FB
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Globe valves 2/2 wayangled design
VGC_MH_00MGSEPPPDME
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FB
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Diaphragm valves 2/2 waystraight through design
VDS_MH_00MGSEPPPDME
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FB
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Diaphragm valves 2/2 wayfor tank mounting
VDB_MH_00PPPDME
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FB
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Diaphragm valves 2/2 wayangled design
VDC_MH_00PPPDME
FB
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FB
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Diaphragm valves 3/2 wayT design for feeding and outlet
VDT_MH_00PPPDME
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FBFB
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Diaphragm valves 2/2 wayfull bore, straight through design
VDFS_MH_00MGPPPDME
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FB
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Ball valves 2/2 waystraight through design
VBS_MH_00MGPPME
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FB
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Ball valves 3/2 waywith T-passage, multi-port design
VBM_T_MH_00MGPPME
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FB
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Ball valves 3/2 waywith L-passage, multi-port design
VBM_L_MH_00MGPPME
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FB
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Butterfly valves 2/2 waystraight through design
VBFS_MH_00MPPME
G
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FB
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Swing check valve 2/2 waystraight through design
VBFS_PO
VBFS_PO
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Gate valves 2/2 waystraight through design
VGAS_MH_00
PPME
MG
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FB
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Pinch valves 2/2 waystraight through design
VHS_MH_00
PP
ME
MG
PD
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FB
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Plug valves 2/2 waystraight through design
VPS_MH_00MGPPME
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FB
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Plug valves 3/2 waywith T- passage, multi-port design
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VPM_T_MH_00MGPPME
FB
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Plug valves 3/2 waywith L- passage, multi-port design
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VPM_L_MH_00MGPPME
FB
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Measurement devices
Q
Q
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LTank
L
L
L
L
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Valve with manual operator
Directly manually operated
Manual operator
Manually operated by gear or servo operated
Manual valve operators
Examples
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Pneumatic/hydraulicpiston controlled valve actuators
Process valve with pneumatic/hydraulicpiston controlled actuator
Normally closed
Pneumatic/hydraulic valveactuator,piston controlled
Normally open
Pneumatic/hydraulic valveactuator,piston controlled
Double acting
Examples
AirFB P
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Pneumatic/hydraulicmembrane controlled valve actuators
Process valve with pneumatic/hydraulicmembrane controlled actuator
Normally closed
Pneumatic/hydraulic valveactuator,membrane controlled
Normally open
Pneumatic/hydraulic valveactuator,membrane controlled
Double acting
Examples
P
P
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Motorized valve actuators
ACDCFigure
=AC voltage=DCvoltage
=volts
Process valve with motorized actuator, 230 V AC,
for linear and quarter turn valves
Motorized valve actuator with integrated continuousposition feedback (e.g. for actual value detection ofvalve position in controlsystems).
Motorized valve actuator with integrated positioncontroller.
Motorized valve actuator with integrated positionand process controller( e.g. for controlling volumetric flow).Right illustration: With additional integrated field busconnection.
AC230
AC115
DC24
DC24
FB
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DC48
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Electro-solenoid valve actuator (solenoid actuator)
Normally closed.
Electro-solenoid valve actuator (solenoid actuator)
Normally open.
Electro-solenoid valve actuator (solenoid actuator)
Double acting.
Electro-solenoid valve actuators
ACDCFigure
=AC voltage= DC voltage
= volts
Examples
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