TABLE 2-1. RECOMMENDED BOLT TORQUE
Meter Size
mm (inch)
ANSI CL 150
DIN PN 16
BS TABLE D & F
ANSI CL 300 DIN PN 40
BS TABLE F
1 - 25
(
1
⁄
25
- 1)
10 ft lb
15 N
•
m
15 ft lb
20 N
•
m
15 ft lb
20 N
•
m
40
(1
1
⁄
2
)
15 ft lb
20 N
•
m
25 ft lb
35 N
•
m
40 ft lb
54 N
•
m
50
(2)
25 ft lb
35 N
•
m
15 ft lb
20 N
•
m
30 ft lb
40 N
•
m
80
(3)
40 ft lb
55 N
•
m
30ft lb
40 N
•
m
30 ft lb
40 N
•
m
100
(4)
30 ft lb
40 N
•
m
-------
-------
NOTE
The recommended bolt torque limits are based on the use of gas-
kets supplied by the manufacturer. If other than these gaskets are
used, the bolt torques must be adjusted accordingly to prevent
cracking the spool.
Should it become necessary to replace an existing magnetic flowmeter (that has a longer lay length)
with a Model 10D1476 K-MAG, a flanged spool piece is available from the factory for ANSI Class 150
flanges in
1
⁄
25
- 4 inch sizes. The length of the spool is selected so that the lay length of the K-MAG
plus the spool piece will be the same as that of the meter it is replacing. Existing piping does not have
to be altered. Specify the model number and size of the meter being replaced to facilitate pipe spool
selection.
NOTE
All 1 - 15 mm (
1
⁄
25
-
1
⁄
2
inch) size magnetic flowmeters are sized to
mate with 15 mm (
1
⁄
2
inch) pipe flanges.
FIGURE 2-6. FLANGE BOLT
TIGHTENING SEQUENCE
Recommended Procedure:
1st Pass - 50% of Torque Value
2nd Pass - 80% of Torque Value
3rd Pass - 100% of Torque Value
10D1476 K-MAG MAGNETIC FLOWMETER INSTRUCTION MANUAL
2-9
