SmartDraw includes thousands of professional-looking diagrams like this that you can easily edit and make your own.
Text in this example:
DETAILED PIPING
[COMPANY NAME]
DRAWN
CHECKED
DATE
DRAWING NO.
LIST OF COMPONENTS
A - GAUGE COCK
F - PLUG
B - MOTORIZED VALVE
G - EXPANSION JOINT
C - R0.25' FLANGED ELBOW
H - ECCENTRIC REDUCER
D - PRESSURE READOUT
I - TURBINE
E - LOCKED VALVE
INLET STATION
MAIN BUILDING
(A)
(B)
FRESH AIR INLET
50' Exterior Pipeline
LO
GAS IN
600 Series
Turbine
2.5'
5.0'
4.5'
(C)
(D)
(E)
(F)
(G)
(H)
(I)