Union LQ3U Metric Size Fluoropolymer Fittings Hyper Fittings
Brand :
SMC
Caution
- For specifications and details, please refer to the catalog.
- Product images may be representative images. Refer to the catalog for details.
Product Description
Fluoropolymer fittings from SMC Corporation.
[Features]
· Flare-type collet construction.
· Triple-seal construction.
· Ease of installation.
· Excellent flow-through characteristics.
· Excellent heat resistance.
· Can be used at 200°C.
[Applications]
· For joining tubes during piping assembly.
Union: LQ3U Metric Size Outline Drawing and Dimensions
Union: LQ3U Outline Drawing
| Model | Applicable Tubing Outer Diameter | E | E' | H | L | L' | M | W |
|---|---|---|---|---|---|---|---|---|
| LQ3U11 | ø4 | 10 | 9 | 11 | 46.5 | 44.5 | 14 | 10 |
| LQ3U12 | ø3 | |||||||
| LQ3U21 | ø6 | 17 | 16 | 16 | 57 | 55 | 20 | 14 |
| LQ3U31 | ø10 | 22.5 | 19.5 | 21 | 79 | 73 | 25 | 18 |
| LQ3U32 | ø8 | |||||||
| LQ3U41 | ø12 | 24 | 22 | 24 | 88 | 84 | 29 | 22 |
| LQ3U51 | ø19 | 26.5 | 24 | 32 | 103 | 98 | 37 | 30 |
| LQ3U61 | ø25 | 30 | 26 | 41 | 122 | 113.5 | 49 | 36 |
- (E, E'): Reference dimension for the inserted tubing from the end surface of the nut.
- (E'), L': Nut material PVDF dimensions.
- W: Width across flats dimension.
Fluoropolymer Fittings Hyper Fittings / Flare-Type LQ3 Series Common Specifications (Reference)
Construction
LQ3 Series Construction
Specifications
| Material | New PFA | |
|---|---|---|
| Maximum operating pressure (at 20°C) | 1.0 MPa | |
| Proof pressure | Refer to the withstand pressure and heat resistance performance data. | |
| Operating Temperature | Nut material PVDF | 0 to 150°C |
| Nut material PFA | 0 to 200°C | |
Withstand Pressure and Heat Resistance Performance
Withstand Pressure and Heat Resistance Performance Data
Precautions
- Use special tools to connect tubing.
- Tighten the nut until it touches the end surface of the body, and then tighten it an additional 1/8 turn to ensure that the nut has reached the end surface. If the nut will not turn any further, then it means a sufficient tightening has occurred. Refer to the proper tightening torques shown below.
| Body size | Torque (N·m) |
|---|---|
| 1 | 0.7 to 0.9 |
| 2 | 1.6 to 1.8 |
| 3 | 3.2 to 3.5 |
| 4 | 5.0 to 5.3 |
| 5 | 10.0 to 10.5 |
| 6 | 22.5 to 23.0 |
| 7 | 23.0 to 26.5 |