Metal One-touch Fitting KQB2 Series Elbow Union KQB2L

Brand :

SMC

Caution

For materials and specification details, please refer to the catalog.
Product images may be representative images. Refer to the catalog for shape details.

Product Description

SMC One-Touch fitting.
[Features]
· Compact and lightweight.
· Grease-free.
· Fluid temperature: -5 to 150°C.
· Brass parts: Electroless nickel plated.
[Applications]
· Use for piping at right angles from the female thread part.

Male Elbow: KQB2L Outline Drawings And Dimensions

Male Elbow: KQB2L outline drawings

(Unit: mm)

Applicable tubing outer diameter (mm)	Connection thread R, M	Model	H (width across flats)	øD^{Note 1)}	L₁	L₂	A^*	M	Effective cross-sectional area^{Note 2)} (mm²)	Weight (g)
ø3.2	M5 × 0.8	KQB2L23-M5	8	8.3	13.1	14.8	16	12	2.6	6.5
	1/8	KQB2L23-01S	10		13.6	14.9	15.9		3	8
	1/4	KQB2L23-02S	14		13.6	18.7	18.1		3	16.6
ø4	M5 × 0.8	KQB2L04-M5	8	9.1	13.7	15.2	16.8	12.6	3.5	7
	1/8	KQB2L04-01S	10		14.4	15.3	16.7		4.2	8.6
	1/4	KQB2L04-02S	14		14.4	19.1	18.9		4.2	17.5
ø6	M5 × 0.8	KQB2L06-M5	8	11.4	14.7	16.3	19	13.6	3.5	9
	1/8	KQB2L06-01S	10		15.9	16.4	19		11.4	10.2
	1/4	KQB2L06-02S	14			20.2	21.2			19.1
	3/8	KQB2L06-03S	17			21.6	22.2			31.2
ø8	1/8	KQB2L08-01S	12	13.7	18.6	18.3	22	16.1	21.6	14.8
	1/4	KQB2L08-02S	14		19.1	21.5	23.6			20.8
	3/8	KQB2L08-03S	17		19.1	22.9	24.6			32.8
ø10	1/8	KQB2L10-01S	12	16.6	20	19.7	24.9	17	21.6	20.4
	1/4	KQB2L10-02S	14		21	22.9	26.5		35.2	23.7
	3/8	KQB2L10-03S	17			24.3	27.5			34.5
	1/2	KQB2L10-04S	22			28.5	30.4			62.6
ø12	1/4	KQB2L12-02S	14	18.7	22.6	24	28.6	18.6	50.2	27.4
	3/8	KQB2L12-03S	17		23.6	25.3	29.5			34.3
	1/2	KQB2L12-04S	22		23.6	29.5	32.4			60.8
ø16	3/8	KQB2L16-03S	19	24.6	26.3	28	34.5	20.8	71	47
ø16	1/2	KQB2L16-04S	22	24.6	27.3	31.8	37	20.8	100	62.6

* Reference dimensions of R thread after installation

Note 1) øD is the maximum diameter.
Note 2) Value of FEP tubing.
Value of nylon tubing for ø16 only.

Metal One-Touch Fitting KQB2 Series Common Specifications (Reference)

Inch size × UNF/NPT thread, millimeter size × G thread
Applicable tubing size: ø3.2 to 16 (external diameter: 3.2 to 16 mm), ø1/8 to 1/2 (external diameter: 1/8 to 1/2 inch)
Connection threads: M, R, Rc, UNF, NPT, G
Fluid temperature: -5 to 150°C
Grease-free
Applicable tubing materials: FEP / PFA / Nylon / Soft nylon / Polyurethane / Polyolefin
Electroless nickel plated (brass parts)

Structure

Metal One-Touch Fitting KQB2 Series structural drawing

No.	Part name	Material
1	Release button	SUS304
2	Guide 1	SUS304
3	Guide 2	SUS304
4	Chuck	SUS304
5	Seal	Special FKM (fluorine coated)
6	Male Connector body	C3604 (electroless nickel plated)
7	Male Elbow body	SUS316
8	O-Ring	Special FKM (fluorine coated)
9	Stud	C3604 (electroless nickel plated)

Applicable Tubing

Tube materials	FEP / PFA / Nylon / Soft Nylon / Polyurethane / Polyolefin
Tube outer diameter	ø3.2, ø4, ø6, ø8, ø10, ø12, ø16

Specifications

Usable fluids	Air, water
Operating pressure range^{Note 1)}	-100 kPa to 1 MPa^{Note 2)}
Proof pressure	3.0 MPa
Ambient and fluid temperature^{Note 3)}	-5 to 150°C (no freezing)^{Note 2)}
Lubricant	Grease-free finish
Seal (thread portion)	With sealant

Note 1) Do not use the fittings with a leak tester or for vacuum retention because they are not guaranteed for zero leakage.
Note 2) Check the operating pressure range and operating temperature range of the tube.
Note 3) It is recommended that you use the inner sleeve in the following conditions. (Except ø3.2)

When using in an environment where the fluid temperature changes drastically.
When using at a high temperature.