No Symbol Symbol designation No Symbol Symbol designation
3.15 Butterfly valve 3.37 3/2 spring return valve contr. by sol-
enoid
3.16 Gate valve 3.38 Reducing valve (adjustable)
3.17 Double-seated changeover valve 3.39 On/off valve controlled by solenoid
and pilot directional valve and with
spring return
3.18 Suction valve chest 4. CONTROL AND REGULATION PARTS
3.19 Suction valve chest with non-return
valves
4.1 Fan-operated
3.20 Double-seated changeover valve,
straight
4.2 Remote control
3.21 Double-seated changeover valve,
angle
4.3 Spring
3.22 Cock, straight through 4.4 Mass
3.23 Cock, angle 4.5 Float
3.24 Cock, three-way, L-port in plug 4.6 Piston
3.25 Cock, three-way, T-port in plug 4.7 Membrane
3.26 Cock, four-way, straight through in
plug
4.8 Electric motor
3.27 Cock with bottom connection 4.9 Electromagnetic
3.28 Cock, straight through, with bottom
conn.
4.10 Manual (at pneumatic valves)
3.29 Cock, angle, with bottom connec-
tion
4.11 Push button
3.30 Cock, three-way, with bottom con-
nection
4.12 Spring
3.31 Thermostatic valve 4.13 Solenoid
3.32 Valve with test flange 4.14 Solenoid and pilot directional valve
3.33 3-way valve with remote control
(actuator)
4.15 By plunger or tracer
3.34 Non-return valve (air) 5. APPLIANCES
3.35 3/2 spring return valve, normally
closed
5.1 Mudbox
3.36 2/2 spring return valve, normally
closed
5.2 Filter or strainer
MAN Diesel & Turbo
I 00 25 0
Symbols for piping
1655279-1.1
Page 2 (10)
L27/38S, L16/24, L16/24S, L21/31, L21/31S, L23/30H, L23/30S, L23/30DF,
L28/32H, L28/32S, V28/32H, V28/32S, L27/38, L28/32DF
2015.11.17
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