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INSTRUCTION MANUAL
Model HC
1.0.2 Preventative Maintenance Prior to Start-up (continued)
1.0.2.2
1.0.2.3
NOTE:
BOLT
BOLT
SIZE
QTY.
SIZE
1"
4
½"
1 ½"
4
½"
2"
4
5/8"
3"
4
5/8"
4"
8
5/8"
6"
8
¾"
8"
8
¾"
10"
12
7/8"
12"
12
7/8"
Based on 1/16" gasket material.
If other than 150# flange rating, consult Henderson Engineering.
Reference 219
Page 9 of 46
TIGHTEN BOLTS IN SEQUENTIAL ORDER (i.e. 0 - 180,
90 - 270, 45 - 225, and 135 - 315) until final torque is
reached.
Use ROTATIONAL TIGHTENING until all bolts are stable at
final torque level. (Two complete times around is usually
required.)
We regret any inconvenience this may cause; however, we feel this
preventative procedure will save time and money in the long run.
Failure to follow this procedure may result in premature gasket
failure which is not covered by warranty.
FLANGE BOLT TIGHTENING TORQUES
150# FLANGE RATING
RECOMMENDED
TORQUE / BOLT
(FT. LBS.)
16
32
64
110
78
148
201
191
254
FLANGE BOLT
TORQUE PROCEDURE
8 BOLTS
SEQUENTIAL ORDER
1-2
3-4
5-6
7-8
MINIMUM TORQUE
(FT. LBS.)
14
28
56
96
68
129
175
166
221
ROTATIONAL ORDER
1
5
3
7
2
6
4
8
MAXIMUM TORQUE
(FT. LBS.)
64
64
128
128
128
230
230
372
372
Rev 2
06/20/2013
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