Regulator Selection | Ratio Regulator
REGULATOR SELECTION To size a regulator, determine required cfh of gas and pressure drop available at high fire. Divide required cfh by Table 2 factor for available pressure drop. Select smallest regulator with Table 1 (2 osi) capacity above this adjusted capacity. Never choose a regulator capacity based on more than 16 osi drop (even if more is available).
7216 AIR/GAS RATIO REGULATORS
Table 1.
CAPACITIES cfh MAXIMUM WIDE OPEN with 2 osi drop through regulator
gas gravity
Regulator designation 0.4
0.6
1.5
2
7216-01 7216-0 7216-1 7216-2 7216-3 7216-4 7216-5 7216-6 7216-7
348 659 854 2110
285 540 700 1730 2800
180 341 442
156 295 383 946
DIMENSIONS Install with diaphragms horizontal and above the pipe.
1090
C
3420 5860 8420 11100
1770 1530
B
¼" fpt for vent to atmosphere or cross-connected
4800 3030 2630 6900 4360 3770
9100
5750 4980 11120 9630
21470 17600
P
D
Table 2.
FACTORS for capacities at other pressure drops
H
F
1 ½
E
A - fpt outlet
A - fpt inlet
Pressure drop, osi
Pressure drop, osi
Factor 0.707
Factor
1
8
2.00 2.24 2.45 2.65 2.83
G
1⁄8 " pipe plug
2
1.00 1.12 1.22
10 12 14 16
2 ½
-7 flanged ‡
H
H
3 4 6
1.41
1.73
dimensions in inches
Regulator designation
wt,
A
B
C
D
E – – – – –
F
G
H
P
lb
3 ¾ 3 ¾ 3 ¾ 5 ¼ 5 ¼ 6 ¾ 9 ¼ 9 ¼ 9 ¼
7 ½ 7 ½ 7 ½
8 11⁄32 8 11⁄32 8 11⁄32 9 31⁄32 9 31⁄32
10 7⁄32 10 7⁄32 10 13⁄32 12 15⁄32 12 19⁄32
2 ¼ 2 ¼
2 ½ 2 ½ 2 ¾ 2 ¾
2 11⁄16 2 11⁄16 2 11⁄16 3 15⁄16 3 15⁄16
7.5 7.5
7216-01 7216-0 7216-1 7216-2 7216-3 7216-4 7216-5 7216-6 7216-7 ‡
½ ¾
1
2 7⁄16
8
1 ¼ 1 ½
10 ½ 10 ½
3
11.5
3 1⁄8 3 3⁄8
3 1⁄16 3 5⁄16
12
2
13 ½ 12 5⁄8 18 ½ 19 1⁄32 18 ½ 19 1⁄32 18 ½ 19 17⁄32
–
15 7⁄8
5 ¼
19.5
2 ½
6 7⁄16 6 7⁄16
23 13⁄32 23 29⁄32 25 21⁄32
4
4 ½
– – –
37 41 85
3 4
4 ½ 5 ¾
4 13⁄16 8 21⁄32
7 1⁄8
‡ Threaded companion flanges included in regulator price.
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC. IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL .
Bulletin 7216 page 3
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