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I 00 25 0 1631472-4.1Page 2 (3)Basic Symbols for Piping

General

93.44

No. Symbol Symbol designation No. Symbol Symbol designation

3.17

3.18

3.19

3.20

3.21

3.22

3.23

3.24

3.25

3.26

3.27

3.28

3.29

3.30

3.31

3.32

3.33

3.34

3.35

3.36

3.37

3.38

3.39

Double-seated change over valve

Suction valve chest

Suction valve chest with non-return valves

Double-seated change over valve, straight

Double-seated change over valve, angle

Cock, straight through

Cock, angle

Cock, three-way, L-port in plug

Cock, three-way T-port in plug

Cock, four-way, straight through in plug

Cock with bottom connect.

Cock, straight through, with bottom conn.

Cock, angle, with bottom connection

Cock, three-way with bottom connection

Thermostatic valve

Valve with test flange

3-way valve with remote control (actuator)

Non-return valve (air)

3/2 spring return valve, normally closed

2/2 spring return valve, normally closed

3/2 spring return valve contr. by solenoid

Reducing valve (adjustable)

4. CONTROL AND REGULATION PARTS

Han-operated

Remote control

Spring

Mass

Float

Piston

Membrane

Electric motor

Electro-magnetic

Manual (at pneumatic valves)

Push button

Spring

Solenoid

Solenoid and pilot directional valve

By plunger or tracer

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

4.12

4.13

4.14

4.15

5. APPLIANCES

5.1

5.2

5.3

5.4

5.5

5.6

Mudbox

Filter or strainer

Magnetic filter

Separator

Steam trap

Centrifugal pumpOn/off valve controlled by solenoid and

pilot directional valve with spring return

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1631472-4.1Page 3 (3) Basic Symbols for Piping I 00 25 0

General

93.44

No. Symbol Symbol designation No. Symbol Symbol designation

Gear or screw pump

Hand pump (bucket)

Ejector

Various accessories (text to be added)

Piston pump

Heat exchanger

Electric preheater

Air filter

Air filter with manual control

Air filter with automatic drain

Water trap with manual control

Air lubricator

Silencer

Single acting cylinder with spring returned

Double acting cylinder with spring returned

Steam trap

5.7

5.8

5.9

5.10

5.11

5.12

5.13

5.14

5.15

5.16

5.17

5.18

5.19

5.20

5.21

5.22

5.23

7. READING INSTR. WITH ORDINARY DESIGNATIONS

7.1

7.2

7.3

7.4

7.5

Sight flow indicator

Observation glass

Level indicator

Distance level indicator

Recorder

6. FITTINGS

6.1

6.2

6.3

6.4

6.5

6.6

6.7

6.8

6.9

Funnel / waste tray

Drain

Waste tray

Waste tray with plug

Turbocharger

Fuel oil pump

Bearing

Water jacket

Overspeed device

Fixed capacity penumatic motor with

direction of flow