NPT Pipe Tee Union, FNPT
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Applications
- High purity, chemical handling applications in the semiconductor industry
- Corrosive applications in the chemical industry
- Corrosive, high purity Laboratory applications
Specifications
| Part Number | FNPT Size | Orifice | Dimensions | ||
| A | B | C | |||
| FUT2 | 1/8" | 0.25" (6.4 mm) | 1.66" (42.2 mm) | 0.83" (21.0 mm) | 0.62" (15.9 mm) |
| FUT4 | 1/4" | 0.35" (8.9 mm) | 1.87" (47.5 mm) | 0.94" (23.7 mm) | 0.75" (19.0 mm) |
| FUT6 | 3/8" | 0.44" (11.2 mm) | 2.00" (50.8 mm) | 1.00" (25.4 mm) | 0.94" (23.8 mm) |
| FUT8 | 1/2" | 0.56" (14.2 mm) | 2.48" (63.0 mm) | 1.24" (31.5 mm) | 1.25" (31.8 mm) |
| FUT12 | 3/4" | 0.75" (19.0 mm) | 2.75" (69.8 mm) | 1.38" (34.9 mm) | 1.42" (36.1 mm) |
Pipe Thread (NPT) Assembly Procedure
- Apply PTFE tape or paste sealant to MNPT threads starting one thread back from end of fitting.
- When using tape, tightly wrap in direction of threads to conform tape to thread shape.
a. Use 3 1/2 to 4 wraps of tape when assembling PFA threads to PFA material.
b. Use 4 to 5 wraps of tape when assembling PFA threads to a material other than PFA. - Thread the fitting onto the mating component until hand tight.
- Using a wrench, tighten fitting about 4 turns past hand tight.
PTFE tape = 1/2" wide for all NPT fittings
Note: PTFE tape is not recommended for use in a gaseous application.
Torque (in•lbs x .11298 = newton•m)
| In•lbs | Newton•m | |
| 1/16" | 5.0 | 0.57 |
| 1/8" | 7.0 | 0.79 |
| 1/4" | 16 | 1.81 |
| 3/8" | 23 | 2.60 |
| 1/2" | 30 | 3.39 |
| 3/4" | 54 | 6.10 |
| 1" | 78 | 8.81 |
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