Siemens SITRANS LR250 Operating Instructions Manual page 21

Raised Face Flange Dimensions
Flange
Pipe
bolt hole
size
pattern
DN50 PN10/PN16
DN80 PN10/PN16
DN100 PN10/PN16
DN150 PN10/PN16
DN50 PN25/PN40
DN80 PN25/PN40
DN100 PN25/PN40
DN150 PN25/PN40
Raised Face Flange markings
Blind Flange Markings
(Optional Manufacturer's Logo
[optional]; Flange Standard;
Nominal Size; Material; Heat
Code)
Manufacturer's logo; EN 1092-1 05 'B1';
'DN50' 'PN16' '1.4404 or 1.4435' A1B2C3
a)
When flange material is Alloy N06022/2.4602, additional material and heat code
identification is provided.
The flange markings are located around the outside edge of the flange.
Serial number: a unique number allotted to each flange, including the date of
manufacture (MMDDYY) followed by a number from 001 to 999.
Flange series: the Siemens Milltronics drawing identification.
Heat code: a flange material batch code identification.
7ML19985KL01
Flange Bolt Hole
O.D. Circle Ø
(mm) (mm)
165 125
200 160
220 180
285 240
165 160
200 160
235 190
300 250
Machining Identification
Serial no.
mmddyyxxx
SITRANS LR250 (FF) – OPERATING INSTRUCTIONS
Angle of
Bolt Hole No. of
adjacent
Ø (mm) Bolts
bolt holes
18 4
18 8
18 8
22 8
18 4
18 8
22 8
26 8
Flange Flange
Logo
series series
XXXXX XXXXX
Thick-
Facing
ness
Ø (mm)
(mm)
90 102 18
45 138 20
45 158 20
45 212 22
90 138 20
45 138 24
45 162 24
45 218 28
Welded Assembly
a)
Identification
Heat
Facing
Code no.
A1B2C3 RF
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