Figure 25b: Steam Trim
KEY | DESCRIPTION | BOILER MODELS | |
1 | 1/2" X 3" BR NIPPLE | ALL | |
2 | 1/2" BR UNION | ALL | |
3 | 1/2" BR CLOSE NIPPLE | ALL | |
4 | LWCO, #67 | ALL | |
5 | GAUGE GLASS SET | ALL | |
6 | 3" SQ. HD. PLUG | ALL | |
7 | 3/4" X 2" NIPPLE | ALL | |
8 | 3/4" UNION | ALL | |
9 | 3/4" X 1/4" HEX BUSHING | ALL | |
10 | 1/4" 90° BR PIGTAIL | ALL | |
11 | L404C1147 | ||
12 | 1/2" X 1/4" BR BUSHING | ALL | |
13 | PRESSURE GAUGE | ALL | |
14 | 3/4" RECESSED HD PLUG | ALL | |
15 | 3/4" BLK EXTENSION | ALL | |
16 | L404F1367 | ALL | |
17 | FIRING RATE PRES CTRL | MODULATING BOILERS | |
18 | 1" X | ||
PUMPED RETURN | |||
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19 | 1" UNION | ||
PUMPED RETURN | |||
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20 | 1" X | ||
PUMPED RETURN | |||
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21 | 1" CLOSE NIPPLE | ||
PUMPED RETURN | |||
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22 | 1" BALL VALVE | ||
PUMPED RETURN | |||
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23 | 1" RECESSED HD PLUG | ||
PUMPED RETURN | |||
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24 | 1" CROSS | ||
PUMPED RETURN | |||
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25 | 1" NIPPLE* | ||
PUMPED RETURN | |||
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26 | |||
PUMPED RETURN | |||
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26 | #64 LWCO | ||
GRAVITY RETURN | |||
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27 | 1" NIPPLE** | ||
PUMPED RETURN | |||
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28 | 1" NIPPLE*** | ||
PUMPED RETURN | |||
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*SIZE NIPPLE TO SET WATER LEVEL OF LWCO.
**SIZE NIPPLE TO MAKE UP LENGTH BETWEEN 24 & 26.
***SIZE NIPPLE TO MAKE UP LENGTH BETWEEN 19 & 24.
STANDARD | QUANTITY |
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| STANDARD | QUANTITY | ||
OPTIONAL | NOT SUPPLIED | KEY | DESCRIPTION | BOILER MODELS | OPTIONAL | NOT SUPPLIED | ||
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2 |
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| 29 | 1" X 12" NIPPLE |
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| 1 | |
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| PUMPED RETURN |
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2 |
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| 30 | 4" BK PLUG | ALL | 1 |
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2 |
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| 31 | ALL | 1 |
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2 |
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| 32 | ALL | 1 |
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2 |
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| 33 | ALL | 1 |
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2 |
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| 34 | 1 |
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| 1 | 34 | 1 |
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| 1 | 34 | 1 |
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1 | 1 | 1 | 35 | 3/4" CLOSE NIPPLE |
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| 1 | |
1 | 1 | 1 | 35 | 1" CLOSE NIPPLE |
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| 1 | |
| 1 |
| 35 |
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| 1 | ||
1 |
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| 35 |
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| 1 | ||
1 |
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| 36 | SAFETY VALVE | 1 |
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1 |
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| 36 | SAFETY VALVE | 1 |
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1 | 1 |
| 36 | SAFETY VALVE | 1 |
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1 |
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| 36 | SAFETY VALVE | 1 |
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| 1 | 37 | 3" X | ALL | 1 |
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| 1 | 38 | 1 |
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| 2 | 38 | 1 |
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| 2 | 39 | 3/4" CLOSE NIPPLE |
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| 1 | |
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| 1 | 39 | 1" CLOSE NIPPLE |
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| 1 | |
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| 1 | 39 |
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| 1 | ||
4 |
| 3 | 40 | 3/4" BALL VALVE |
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| 1 | |
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| 3 | 40 | 1" BALL VALVE |
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| 1 | |
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| 1 | 40 |
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| 1 | ||
| 1 |
| 41 | 3/4" SQ. HD. PLUG |
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| 1 | |
| 1 |
| 41 | 1" SQ. HD. PLUG |
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| 1 | |
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| 1 | 41 |
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| 1 | ||
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| 1 |
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27