Emerson Enardo EN Series Instruction Manual page 6

Free Vent Flame Arrestor
4 1
2 3
PATTERN 1
ENARDO EN FREE VENT FLAME ARRESTOR SERIES WITH STEEL
OR STAINLESS STEEL END SECTIONS ONLY
Model
EN-FVFA-0401
EN-FVFA-0401.5
EN-FVFA-0402
EN-FVFA-0603
EN-FVFA-0802
EN-FVFA-0803
EN-FVFA-0804
EN-FVFA-1206
EN-FVFA-1608
EN-FVFA-2010
EN-FVFA-2412
EN-FVFA-3014 and EN-FVFA-3016
1. Using machine oil as lubricant. See Bolt Lubrication section below and torque correction factors for other lubricants in Table 7.
2. See Figure 5.
6
1
6 3
4 5
2
PATTERN 2
20
16
12
8
4
18
14
10
6
2
PATTERN 5
Figure 5. Flange Pattern Tightening Sequence
Table 6. Tightening Steps and Torque Values
Pattern Step 1
(2)
1
2
3
3
4
5
8 1
4 5
6 3
2 7
PATTERN 3
1
5
9
13
17
3
7
11
15
19
(1)
TIGHTENING STEPS AND TORQUE (FT•LB / N•m)
Step 2 Step 3
Snug 20 / 27 50 / 68
Snug 20 / 27 50 / 68
Snug 25 / 34 50 / 68
Snug 25 / 34 50 / 68
Snug 35 / 47 70 / 95
Snug 35 / 47 70 / 95
1
10
5
8
3
7
4
9
6
2
PATTERN 4
Step 4 Step 5
- - - - - - - -
- - - - - - - -
80 / 108 - - - -
75 / 102 100 / 135
100 / 135 130 / 176
100 / 135 130 / 176