Fluoropolymer Pipe Fitting, LQ1 Series, Union Reducing, Metric Size

Brand :

SMC

Caution

Refer to the catalog for product specifications.
Product images may be representative images. Refer to the catalog for details.

Product Description

A reducing type union with outstanding flow-through characteristics with minimized liquid pooling.
[Features]
· Unique quadruple-sealing construction (PAT.) provides a strong sealing effect and highly reliable performance against the leakage of liquids.
· For use at 200°C.
· The seal lock on the nut helps prevent loosening.
· The trapezoidal thread allows for the application of high levels of torque.
· The tube holding section on the nut utilizes a 2-stage system for securely holding tubes in place.
· Strong resistance to tube bending and deformation.
· Easy nut fastening.
· The trapezoidal thread prevents the angled insertion of nuts.

Union, Reducing Type LQ1U-R Series Specifications

Common Specifications

Item	Model
Item	LQ1□10	LQ1□20	LQ1□30	LQ1□40	LQ1□50	LQ1□60
Material	New PFA ^Note:
Maximum operating pressure (at 20°C)	1.0 MPa
Withstand pressure	Refer to the withstand pressure and heat resistance performance curves.
Operating temperature	0 to 200℃

Note: For made-to-order products, the main body of the fitting is made of PTFE.

Withstand pressure and heat resistance performance

Union, Reducing Type LQ1U-R Metric Size: Related images

Withstand pressure and heat resistance performance curves

LQ1U-R Series

LQ1U-R Series Outline Drawing

Series	Size	Tube outer diameter
		Metric Size
		ø3	ø4	ø6	ø8	ø10	ø12	ø19	ø25
Union, Reducing Type LQ1U-R	3	●	●	●	●	○	-	-	-
	4	●	●	●	●	●	○	-	-
	5	●	●	●	●	●	●	○	-
	6	-	-	●	-	●	●	●	○

Note: ○ Standard size ● With reducer

Outline dimensional drawing

LQ1U-R dimensional drawing

For sizes 3 to 5

For size 6

Model	A side	B side	E₁	E₂	H₁	H₂	L	M₁	M₂	W
Model	Applicable tube outer diameter		E₁	E₂	H₁	H₂	L	M₁	M₂	W
LQ1U31-R3	ø10	ø4	24	15	21	14	53	28	16.5	23
LQ1U41-R2	ø12	ø8	24	20	21	17	58.5	28	23	23
LQ1U41-R3	ø12	ø6	24	15	21	14	53	28	16.5	23
*LQ1U51-R2	ø19	ø10	29	20	26	17	66.5	39	23	32
*LQ1U51-R3	ø19	ø8		20		17	66.5		23
LQ1U51-R4	ø19	ø6		15		14	61.5		16.5
LQ1U51-R6	ø19	ø3		15		14	61.5		16.5
LQ1U61-R2	ø25	ø12	39.5	24	36	21	87	49	28	46
*LQ1U61-R5	ø25	ø6	39.5	20	36	17	82	49	23	36

Units: mm
Note: Products marked with '*' are manufactured to order (the main body of the fitting is machined PTFE).

Notes For Tubing

1. Use the dedicated tool for connecting tubes.
Refer to "High-Purity Fluoropolymer Fittings / Hyper Fitting LQ1, 2 Series Work Procedure Instructions" for notes regarding tube connections and dedicated tools.

Dedicated Tool Outline Drawing

2. Tighten the nut as far as the end surface of the main body. In order to confirm that it has properly reached the end surface of the main body, tighten by a further 1/8th (approx.) of a turn. You will know that you have sufficiently tightened the nut if it will turn no further past this point. Be sure to also refer to the appropriate tightening torques shown below.

Body size	Torque (N·m)
3	0.8 to 1.0
4	1.0 to 1.2
5	2.5 to 3.0
6	5.5 to 6.0

Note: For body size 1, tighten by hand.