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PRESSURE DROP FOR FLOW THROUGH A STANDARD DIN PIPE WITH FITTINGS
PROJECT DATA (Optional)
Project
Remarks
Your ref
Client
Identification
Client's ref
CALCULATION INPUT (Required)
FLUID DATA
PIPE DATA
Medium
Size DN
6
8
10
15
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
500
Flowrate
ft3/h
ft3/min
GPM
GPH
m3/h
m3/min
m3/s
Wall Thickness
Standard
2
2.3
2.6
2.9
3.2
3.6
4
4.5
5
5.6
6.3
7.1
8
8.8
10
11
12.5
14.2
16
17.5
20
22.2
25
mm
Density
kg/m3
lb/ft3
Pipe Material
Carbon Steel
Stainless Steel
Dynamic Viscosity
mPa.s [=cP]
Length
m
ft
FITTINGS AND VALVES INPUT
For number of fittings and valves:
Use Manual Input underneath
Use automatic Complexity correlation
OutSide Battery Limits lines (OSBL), simple
OutSide Battery Limits Lines (OSBL), normal
Average Complexity
InSide Battery Limits (ISBL), manifold type
InSide Battery Limits (ISBL), very complex
Bottom of Page  Go to Input Additional Pressure Drop Items
Fill this out if the radio button for manual input has been ticked only
Elbows
90 °
Number
R/D = ...
Type
Connection
R/D = 1
Std Radius
Screwed
R/D = 1
Std Radius
Flanged / Welded
R/D = 1.5
Long Radius
All Types
R/D = 5
Pipe Bend
R/D = 1.5
Mitered
2 Pipes with 1 weld @ 90 ° angle
R/D = 1.5
Mitered
3 Pipes with 2 welds @ 45 ° angle
R/D = 1.5
Mitered
4 Pipes with 3 welds @ 30 ° angle
R/D = 1.5
Mitered
5 Pipes with 4 welds @ 22.5 ° angle
R/D = 1.5
Mitered
6 Pipes with 5 welds @ 18 ° angle
Elbows
45 °
Number
R/D = ...
Type
Connection
R/D = 1
Std Radius
All Types
R/D = 1.5
Long Radius
All Types
R/D = 5
Pipe Bend
R/D = 1.5
Mitered
2 Pipes with 1 weld @ 45 ° angle
R/D = 1.5
Mitered
3 Pipes with 2 welds @ 22.5 ° angle
Return
180 °
Number
R/D = ...
Type
Connection
R/D = 1
Std Radius
Screwed
R/D = 1
Std Radius
Flanged / Welded
R/D = 1.5
Long Radius
All Types
Tees used as elbow
Number
R/D = ...
Type
Connection
R/D = 1
Std Radius
Screwed
R/D = 1
Std Radius
Flanged / Welded
R/D = 1.5
Long Radius
All Types
R/D = 0

Welded stub in branch
Tee  run through T
Number
R/D = ...
Type
Connection
R/D = 1 ... 1.5
Std / Long
Screwed
R/D = 1 ... 1.5
Std / Long
Flanged / Welded
R/D = 0

Welded stub in branch
Valves
Number
Type
Special
Gate, Ball, Plug
Full line size
ß = 1
Gate, Ball, Plug
Reduced Trim
ß = 0.9
Gate, Ball, Plug
Reduced Trim
ß = 0.8
Globe
Standard
Globe
Angle or Ytype
Diaphragm
Dam type
Butterfly
Check
Lift type
Check
Swing type
Check
Tilting Disk
Entrance and Exit
Number
Entrance, Smooth with Wall  this is a normal entrance
Entrance, inward projecting
Exit
ADDITIONAL PRESSURE DROP ITEMS (FITTINGS OR OTHER)
Fill this out for both manual and automatic fitting count
Fixed Items
Number
Fixed k factor
(dp = k x ½ x rho x v
^{2}
)
Fixed Pressure Drop
bar
psi
Line diameters equivalent length
(l = n x d)
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