Minimal Fitting, Tightening Straight
Caution
Product Description
[Features]
· Optimal for piping used in vacuum equipment via combination with vacuum tubing.
· Ideal for small equipment and space saved piping.
Do You Have Problems Like These?
- Problem 1
- I need a fitting that lets me easily tighten the tube
- Problem 2
- I need a fitting that enables space-saving piping
- Minimal Fitting - Compression Type Straight solves your problems.
- Solution 1:
- Minimal Fitting - Compression Type Straight lets you tighten the tube by hand tightening only.
- Solution 2:
- This compact fitting enables space-saving piping, making it ideal for small equipment.
How To Attach And Detach The Connecting Part
■ How to attach and detach the tube
1. Attaching the tube
Insert the tube through the cap nut up to the barb base. Then, tighten the cap nut over the tube by hand until it touches the metal body.
2. Detaching the tube
To remove the tube, manually remove the cap nut. Then remove the tube.
Whenever detaching the tube, be sure to turn off the air before proceeding.
■ How to tighten the screws
There are two ways to tighten the screws: by tightening the outer hexagon with a wrench, or by using a straight-slot screwdriver in the groove on the top of the hexagon (this lets you minimize the space between fittings).
Also refer to the table below when tightening the screws.
Tightening the outer hexagon
Tightening the groove-section on the top surface
■ Recommended tightening torque, sealock color and gasket material
| Screw Type | Thread size | Tightening Torque | Sealock Color | Gasket Material |
|---|---|---|---|---|
| Metric Thread | M3×0.5 | 0.7 N·m | - | SUS304 NBR |
| M5×0.8 | 1.0 to 1.5 N·m | |||
| M6×1 | 2 to 2.7 N·m | |||
| M3×0.5 | 0.5 to 0.6 N·m | POM | ||
| M5×0.8 | 1 to 1.5 N·m | |||
| M6×0.75 | 0.8 to 1 N·m | |||
| M8×0.75 | 1 to 2 N·m | |||
| Taper Pipe Thread | R1/8 | 7 to 9 N·m | White | - |
| R1/4 | 12 to 14 N·m | |||
| R3/8 | 22 to 24 N·m | |||
| R1/2 | 28 to 30 N·m | |||
| Unified Thread | No. 10 to 32 UNF | 1.0 to 1.5 N·m | - | SUS304, NBR |
| Tapered Thread For General US Pipes | 1/16 to 27 NPT | 7 to 9 N·m | White | - |
| 1/8 to 27 NPT | 7 to 9 N·m | |||
| 1/4 to 18 NPT | 12 to 14 N·m | |||
| 3/8 to 18 NPT | 22 to 24 N·m | |||
| 1/2 to 14 NPT | 28 to 30 N·m |
Ideal for small equipment and space-saving piping.
Metric thread
Taper pipe thread
The Minimal Fitting - Compression Type Straight is compact, making it ideal for small equipment and space-saving piping.
Refer to the table below for the size of each model number.
*Numbers in parentheses are for the clean room packaging specification
Unit: mm
| Format | LCN-0320-M3 | LCN-0320-M5 | LCN-0320-01 | LCN-0425-M5 | LCN-0425-01 | LCN-0640-M5 | LCN-0640-01 |
|---|---|---|---|---|---|---|---|
| Tube Outer Diameter × Internal Diameter øD | 3 × 2 | 4 × 2.5 | 6 × 4 | ||||
| R | M3×0.5 | M5×0.8 | R1/8 | M5×0.8 | R1/8 | M5×0.8 | R1/8 |
| A | 2.5 (2.2) | 3 (3.2) | 8 | 3 (2.2) | 8 | 3 (3.2) | 8 |
| G | 0.5 (0.8) | 0.5 (0.3) | - | 0.5 (0.3) | - | 0.5 (0.3) | - |
| C | 4 | 5 | 5.5 | ||||
| B | 12 | 12.5 | 19 | 14.5 | 20.5 | 15 | 21 |
| L1 | 9.5 (9.8) | 9.5 (9.3) | 15 | 11.5 (11.3) | 16.5 | 12 (11.8) | 17 |
| L2 | 7 | 8.5 | 9 | ||||
| L3 | 6 | 7 | 7.5 | ||||
| øP | 5 | 6.5 | 8 | ||||
| Hex H | 5.5 | 7 | 10 | 7 | 10 | 8 | 10 |
| Mass (g) | 1.2 | 1.9 | 7.5 | 2.5 | 7.9 | 3.4 | 8.9 |
| Effective Cross-Sectional Area | 0.9 | 2.0 | 3.8 | ||||
Compatible Sizes
Tube size
Millimeter size: ø3 × ø2 (outer diameter 3 × internal diameter 2 mm), ø4 × ø2.5 (outer diameter 4 × internal diameter 2.5 mm), ø5 × ø3 (outer diameter 5 × internal diameter 3 mm), ø6 × ø4 (outer diameter 6 × internal diameter 4 mm)
Thread size
Metric male thread: M3 × 0.5, M5 × 0.8, M6 × 1
Taper pipe male thread: R1/8
Metric female thread: M3 × 0.5, M5 × 0.8