Installation
FLEXIBLE METAL HOSE
INSTALLING FLEXIBLE METAL HOSE
To assure maximum service life, the following precaution should be adhered to when installing a flexible metal hose assembly.
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HOSE SIZE & THREAD SIZE SELECTING CHART FOR ALL TYPES OF HOSES.
| Hose Size inches | mm nw |
Corresponding Thread | Stand Pipe | NPTF* | |||||
| BSP inches |
NPT inches | SAE inches | Metric | Pipe dia mm | Length mm | Thread inches | TPI | ||
| 3/16 | 4 | 1/4 | 1/4 | 7 /16-20UNF | M12x1.5 M16x1.5 |
6 8 |
20 22 |
65 | 27 18 |
| 1/4 | 6 | 1/4 | 1/4 | 7 /16-20UNF 1 /2-20UNF 9 /16-18UNF 5 /8-18UNF |
M14x1.5 M16x1.5 M18x1.5 |
8 10 12 |
22 24 25 |
65 | 27 18 18 |
| 5/16 | 8 | 3/8 | 3/8 | 1 / 2-20UNF 9 /16-18UNF 5 / 8-18UNF |
M16x1.5 M20x1.5 |
10 12 |
24 25 |
65 | 18 18 |
| 3/8 | 10 | 3/8 | 3/8 1 /2 |
1 / 2-20UNF 9 /16-18UNF 3 / 4-16UNF 7 / 8-14UNF |
M18x1.5 M22x1.5 |
12 14 10 |
25 27 24 |
65 | 18 18 14 |
| 1/2 | 13 | 1/2 | 1/2 | 9 /16-18UNF 3 / 4-16UNF 7 / 8-14UNF 1.1/16-12UNF |
M22x1.5 M24x1.5 M26x1.5 |
15 16 18 20 |
25 30 25 32 |
65 | 18 14 14 |
| 5/8 | 16 | 5/8 3/4 |
3/4 | 3 / 4-16UNF 7 / 8-14UNF 1.1/16-12UNF |
M26x1.5 | 18 20 |
25 23 |
65 | 14 |
| 3/4 | 20 | 3/4 1 |
3/4 1 |
7 / 8-14UNF 1.1/16-12UNF 1.3/16-12UNF 1.5/16-12UNF |
M30x1.5 M30 x 2.0 M36 x 2.0 |
22 25 |
25 34 |
65 | 14 11½ |
| 1 | 25 | 1 1¼ |
1 1¼ |
1.5 /16-12UNF 1.5 / 8-12UNF |
M38x1.5 M42x2.0 |
28 30 |
25 40 36 40 |
65 | 11 1/2 |
| 1¼ | 32 | 1¼ 1½ |
1½ 1½ |
1.5 /16-12UNF 1.7 /8-12UNF |
M45x1.5 M52x1.5 |
38 30 35 |
38 35 30 |
50 | 11½ |
| 1½ | 38 | 1½ 2 |
1½ 2 |
1.7 /8-12UNF 2 1/ 4-12UNF 2 1/ 2- 2UNF |
M52x1.5 M52x2.0 |
42 50 |
36 70 |
11½ 11½ |
|
| 2 | 50 | 2 | 2 | 2 1/2-12UNF | M65x2.0 | - | - | 2 | 11½ |
| 2½ | 63 | 2½ 3 |
2½ 3 |
3-12UNF | M78x2.0 | - | - | - | - |
| 3 | 76 | 3 | 3 | - | M100x2.0 | - | - | - | - |
Note
The National Pipe Tapered Thread for fuels is a dryseal thread used for both for male & female ends .The Interface crest and root fit of the mating threads produces the seal .(This thread should not be confused with American Standard NPT thread which does not produce and crest and root seal.)