Fluoropolymer Bore Through Connector LQHB Metric Size

Caution
- For specifications and details, please refer to the catalog.
- Product images may be representative images. Refer to the catalog for details.
Product Description
A fluoropolymer fitting that allows free positioning.
[Features]
・ Since the tube penetrates the fitting body, it can be set at any position
・ It can be used for pumping chemicals in the semiconductor manufacturing process, etc.
・ It can be used with chemicals such as acids, alkalis and ultrapure water
・ Material: New PFA (body, nut), PTFE (Collet)
Fluoropolymer LQHB Bore Through Connector Metric Size Specifications

LQHB Series External Appearance

LQHB Series Dimensional Drawing

Dimensional Drawings for Size 1

Dimensional Drawings for Sizes 2 to 5

Dimensional Drawings for Size 6
| Model | Size | A | H | L | M | W |
|---|---|---|---|---|---|---|
| LQHB03-□ | 1 | 22.5 | - | 27 | 11.5 | 10 |
| LQHB04-□ | ||||||
| LQHB06-□ | 2 | 27.5 | 14 | 34 | 16.5 | 14 |
| LQHB08-□ | 3 | 34.5 | 17 | 42.1 | 23 | 19 |
| LQHB10-□ | ||||||
| LQHB12-□ | 4 | 40 | 21 | 49 | 28 | 23 |
| LQHB19-□ | 5 | 50 | 26 | 61.1 | 39 | 32 |
| LQHB25-□ | 6 | 66 | 36 | 77 | 49 | 46 |
Unit: mm
Applicable tubing size
| Symbol | Size | Applicable tubing size (mm) | Tubing outer diameter |
|---|---|---|---|
| 03 | 1 | 3 × 2 | 1/8 " |
| 04 | 4 × 3 | ||
| 06 | 2 | 6 × 4 | 1/4 " |
| 08 | 3 | 8 × 6 | 3/8 " |
| 10 | 10 × 8 | ||
| 12 | 4 | 12 × 10 | 1/2 " |
| 19 | 5 | 19 × 16 | 3/4 " |
| 25 | 6 | 25 × 22 | 1 " |
Note) For details of the applicable tubing sizes, refer to page 945.
Specifications
- Maximum operating pressure (at 20°C): 1.0 MPa (Refer to Note 1)
- Operating temperature: 0 to 200°C (Refer to Note 1)
Structural Drawing

LQHB Series Structural Drawing
Applications

Pressure feed of chemical liquids

Water trap

Fluid temperature control
Tube position can be changed according to the depth of the container.
Precautions
- 1. The operating pressure or operating temperature range for each tubing size differs depending on the usage conditions. Keep the supplied fluid pressure and temperature within the range of each specification.
- 2. The piping should be arranged in such a way that no extraction force other than the fluid pressure is added to the tubing.
- 3. The nut should not be immersed in fluid during use.
- 4. Screw in the R or NPT screw after inserting the tubing. (If the screw is screwed in first, the tubing may become hard to insert.)
Precautions for piping
| 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 |
1. As with the nut tightening, refer to the tightening torques to the left as a guide.

Tightening image
2. Tightening
After tightening the nut by hand, use the nut tightening wrench dedicated for the LQ1 to tighten the nut securely. The tightening is enough when the clearance between the end face of the nut and the body is 2 mm or less (Refer to figure 1 on left).
*See the manufacturer's catalog for product information other than that mentioned above.