DA- 2 - DA JA - 3 - Demonstration of Part Number Product Category Description Product Code EP 5Ra Finish BA 10Ra Finish or Mill Finish Mini Butt Weld Fittings Micro Reducer MR MR6-1/2-1/4-SE

- 4 -

DA

JA

- 1 -

Technical SpecificationMaterial Designation

Surface Roughness Designation (Wetted Area)

Cleaning & Packaging Designation

Tubing Specifications For Micro Butt-Welding Fittings

Designator Material Specification

D 316L VIM+VAR Stainless SteelBar stock meets the standard of ASTM A479, ASME SA479, ASTM A276.Forged body meets the standard of ASTM A182, ASME SA182, ASTM A314.

S 316L VAR or VOD Stainless Steel

L 316L Stainless Steel

6 316 Stainless Steel

Designator Process Description Specification

E EP, electro-polishing Ra5μin (Ra0.13μm)

B BA, mechanical polishing Ra10μin (Ra0.25μm)

M Machining mill finish

● Note : 1. J is Asian design and specification.2. A is American design and specification.3. All data shown as on this catalogue is for the temperature ranging:From 20°F to 100°F (-25°C to 36°C)

Product Category Designation Specification

Mini Butt Weld Fittings UHP DAJA spec, SOP-8-57

Long Butt Weld Fittings UHP DAJA spec, SOP-8-57

OD (inch) OD (mm)Wall Thickness

Manufacturing Standard*J *A

1/4" 6.35 1.0 0.89 JIS G3459/ASTM standard (A270, A269)




1" 25.10 1.65 1.65 JIS G3459/ASTM standard (A270, A269)

Description Page

Technical Specification and designation

Demonstration of Part Number

How to Order A Part

Mini Butt Weld Fittings

　　　　　(MR)　　　　　Micro Reducer………..…...…04

　　　　　(ME)　　　　　Micro Elbow………..….......…05　　　　　(MRE)　　　　　Micro Reducing Elbow….......05

　　　　　(MT)　　　　　Micro Tee……………….….…06

Long Butt Weld Fittings

　　　　　(MLE)　　　　　Micro Long Elbow ……….….08　　　　　(MLR)　　　　　Micro Long Reducer …….….09

　　　　　(MLT)　　　　　Micro Long Tee ………….…..09

(MRT)Micro Reducing Tee….............…06(MC)Micro Cross ……..............………07(MTE)Micro Tri-Elbow….…............……07

(MLRT)Micro Long R-Tee ….….............10(MLC)Micro Long Cross ……...........…10

(MLRC)Micro Long Reducing Cross …..11

01

02

03

04

08

Contents Micro Butt-Welding Fittings

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DA

JA

- 3 -

Demonstration of Part NumberProduct

Category Description Product Code EP 5Ra Finish BA 10Ra Finish or Mill Finish


Micro Reducer MR MR6-1/2-1/4-SE MR6-1/2-1/4-SB

Micro Elbow ME ME6-1/2-SE ME6-1/2-SB

Micro 45° Elbow MEH MEH6-1/2-SE MEH6-1/2-SB

Micro Tee MT MT6-1/2-SE MT6-1/2-SB

Micro Reducing Tee MRT MRT6-1/2-1/4-SE MRT6-1/2-1/4-SB

Micro Cross MC MC6-1/2-SE MC6-1/2-SB

Micro Tri-Elbow MTE MTE6-1/2-SE MTE6-1/2-SB


Micro Long Elbow MLE MLE-1/4-LE MLE-1/4-LB

Micro Long Reducer MLR MLR-3/8-1/4-LE MLR-3/8-1/4-LB

Micro Long Tee MLT MLT-1/4-LE MLT-1/4-LB

Micro Long R-Tee MLRT MLRT-3/8-1/4-LE MLRT-3/8-1/4-LB

Micro Long Cross MLC MLC-1/4-LE MLC-1/4-LB

Micro Long Reducing Cross MLRC MLRC-3/8-1/4-LE MLRC-3/8-1/4-LB

How to Order A PartExample A : ME6-1/2-DE-A

ME6 Micro Elbow with (1/4”) 6.40mm orbital welding leg

1/2 tube end dimension is 1/2” OD

DE D: 316L VIM/VAR Material, E: Electro-polishing finish, 5 Ra

A American/Europe Standard

Example B : MLT-1/4-LB-JMLT Micro Long Tee with (3/4”) 19.1mm orbital welding leg

1/4 tube end dimension is 1/4” OD

LB 316L Material, B: BA, mechanical processing finish, 10 Ra

J Asia Standard

Description Part No. Sleeve Length 1

Tube Size 1(in).

Tube Size 2(in).

Sleeve Length 2 Material

Inner Surface Quality

DimensionStandard

Micro Reducer MR6-1/2-1/4-SB 6= 6.40 mm 1/8" 1/8" 11=11.40 mm

D=316L VIM/VAR

E=EP finish, Ra 5

A=American/Europe

StandardMicro Elbow ME6-3/8-SE 11=11.40 mm 1/4" 1/4" 13=12.70 mm

Micro Tee MT6-1/2-SB 13=12.70 mm 3/8" 3/8"S=316L

VARB=BA finish,

Ra 10J=JIS

StandardMicro Long Elbow MLE-1/4-LB 1/2" 1/2"

Micro LongReducer MLR-3/8-1/4-LB 3/4" 3/4" L=316L M=Mill finish

D=DAJAStandardMicro Long

Tee MLT-1/4-LB 1” 1” 6=316

Micro Butt-Welding FittingsMicro Butt-Welding Fittings

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DA

JA

- 5 -

1/4” (6.35mm) short orbital welding length is provided with a compact design for saving piping space.

Micro Reducer (MR)

Micro Elbow (ME)

Micro Reducing Elbow (MRE)


DAJAPart No.

TubeO.D.1

TubeO.D.2

Dimensions InterchangePart No.1

InterchangePart No.2

PressureRatingA B B1

Dimensions, in. (mm) psig (bar)

MR6-1/4-1/8-XX 1/4 1/8 0.75(19.1)

0.42(10.4)

0.25(6.4) 6LV-4MW-6-2 4-2 MHM-SSV .035 .028 5100

(351)

MR6-3/8-1/4-XX 3/8 1/4 0.75(19.1)

0.42(10.4)

0.25(6.4) 6LV-6MW-6-4 6-4 MHM-SSV .035 3300

(227)

MR6-1/2-1/4-XX 1/2 1/4 0.75(19.1)

0.42(10.4)

0.25(6.4) 6LV-8MW-6-4 8-4 MHM-SSV .049 .035 3700

(254)

MR6-1/2-3/8-XX 1/2 3/8 0.75(19.1)

0.42(10.4)

0.25(6.4) 6LV-8MW-6-6 8-6 MHM-SSV .049 .035 3300

(227)

DAJAPart No.

TubeO.D



PressureRatingA B F

Flat L

Dimensions, in. (mm) psig (bar)

ME6-1/8-XX 1/8 0.56(14.2)

0.25(6.4) 5/16 0.41

(10.4) 6LV-2MW-9 2-2 MEM-SSV .028 8500(585)

ME6-1/4-XX 1/4 0.56(14.2)

0.25(6.4) 5/16 0.41

(10.4) 6LV-4MW-9 4-4 MEM-SSV .035 5100(351)

ME6-3/8-XX 3/8 0.69(17.5)

0.25(6.4) 7/16 0.47

(11.9) 6LV-6MW-9 6-6 MEM-SSV .035 3300(227)

ME6-1/2-XX 1/2 0.81(20.6)

0.25(6.4) 9/16 0.53

(13.5) 6LV-8MW-9 8-8 MEM-SSV .049 3700(254)

DAJAPart No.

TubeO.D.1

TubeO.D.2

DimensionsInterchange

Part No.1Interchange

Part No.2Pressure

RatingA B FFlat L

Dimensions, in. (mm) psig(bar)

MRE6-3/8-1/4-XX 3/8 1/4 0.69(17.5)

0.25(6.4) 7/16 0.47

(11.9) 6LV-6MW-9-4 6-4MEM-SSV .035

3300(227)

MRE6-1/2-1/4-XX 1/2 1/4 0.81(20.6)

0.25(6.4) 9/16 0.53

(13.5) 6LV-8MW-9-48-4

MEM-SSV.049 .035

3700(254)

MRE6-1/2-3/8-XX 1/2 3/8 0.81(20.6)

0.25(6.4) 9/16 0.53

(13.5) 6LV-8MW-9-68-6

MEM-SSV.049 .035

3300(227)

Chamfered body block helps prevent damage to other components during system fabrication or maintenance.

Marking identifies brand, typematerial, and productionlot number (heat code tracing)

EP Grade, electro-polish finish with 5 µin. (0.13 µm) Ra surface finish plus UHP cleaning and packaging. Standard BA grade surface finish is 10 µin. (0.25 µm) Ra.

Radius junctionallows smooth flow transition andeliminates pockets and entrapment zones.

Square,burr-free tube

weld endsenhance alignment, maintain

tube wall uniformity, and promote weld repeatability.

Mini Butt Weld FittingsMini Butt Weld Fittings

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DA

JA

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Micro Tee (MT) Micro Cross (MC)

Micro Reducing Tee (MRT)Micro Tri-Elbow (MTE)

DAJAPart No.

TubeO.D.



Part No.2Pressure

RatingA B FFlat L


MT6-1/8-XX 1/8 0.82(20.8)

0.25(6.4) 5/16 0.41

(10.4) 6LV-2MW-3 2-2-2 MJM-SSV .028 8500(585)

MT6-1/4-XX 1/4 0.82(20.8)

0.25(6.4) 5/16 0.41

(10.4) 6LV-4MW-3 4-4-4 MJM-SSV .035 5100(351)

MT6-3/8-XX 3/8 0.94(23.9)

0.25(6.4) 7/16 0.47

(11.9) 6LV-6MW-3 6-6-6 MJM-SSV .035 3300(227)

MT6-1/2-XX 1/2 1.06(26.9)

0.25(6.4) 9/16 0.53

(13.5) 6LV-8MW-3 8-8-8 MJM-SSV .049 3700(254)

DAJAPart No.

TubeO.D.1

TubeO.D.2



Part No.2Pressure

RatingA B FFlat L


MRT6-3/8-1/4-XX 3/8 1/4 0.94(23.9)

0.25(6.4) 7/16 0.47

(11.9)6LV-6MW-3-

6-46-6-4 MJM-SSV

.0353300(227)

MRT6-1/2-1/4-XX 1/2 1/4 1.06(26.9)

0.25(6.4) 9/16 0.53

(13.5)6LV-8MW-3-

8-48-8-4 MJM-

SSV0490490353700(254)

MRT6-1/2-3/8-XX 1/2 3/8 1.06(26.9)

0.25(6.4) 9/16 0.53

(13.5)6LV-8MW-3-

8-68-8-6 MJM-

SSV0490490353300(227)

DAJAPart No.

TubeO.D.



Part No.2Pressure

RatingA B FFlat L


MC6-1/8-XX 1/8 0.82(20.8)

0.25(6.4) 5/16 0.41

(10.4) 6LV-2MW-4 2 MKM-SSV .028 8500(585)

MC6-1/4-XX 1/4 0.82(20.8)

0.25(6.4) 5/16 0.41

(10.4) 6LV-4MW-4 4 MKM-SSV .035 5100(351)

MC6-3/8-XX 3/8 0.94(23.9)

0.25(6.4) 7/16 0.47

(11.9) 6LV-6MW-4 6 MKM-SSV .035 3300(227)

MC6-1/2-XX 1/2 1.06(26.9)

0.25(6.4) 9/16 0.53

(13.5) 6LV-8MW-4 8 MKM-SSV .049 3700(254)

DAJAPart No.

TubeO.D.

WallThickness



PressureRatingA B F

Flat L


MTE6-1/4-XX 1/4 0.035 0.56(14.2)

0.25(6.4) 5/16 0.41

(10.4) 6LV-4MW-91 4-4-4 M0JM-SSV .035

5100(351)

MTE6-3/8-XX 3/8 0.035 0.69(17.5)

0.25(6.4) 7/16 0.47

(11.9) 6LV-6MW-91 6-6-6 M0JM-SSV .035

3300(227)

MTE6-1/2-XX 1/2 0.049 0.81(20.6)

0.25(6.4) 9/16 0.53

(13.5) 6LV-8MW-91 8-8-8 M0JM-SSV .049

3700(254)

Mini Butt Weld FittingsMini Butt Weld Fittings

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DA

JA

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3/4” (19.05mm) long extended orbital welding length provides easier and quicker set-up for w/orbital welder. Forged fitting body or machined fitting body is designed with compact configuration for reducing piping weight.


Micro Long Elbow (MLE)

DAJAPart No.

TubeO.D.



PressureRatingB F

Flat L


MLE-1/4-XX 1/4 0.75(19.1) 7/16 1.23

(31.2) 316L-4TB7-9 －5100(351)

MLE-3/8-XX 3/8 0.75(19.1) 7/16 1.20

(30.5) 316L-6TB7-9 －3300(227)

MLE-1/2-XX 1/2 0.75(19.1) 11/16 1.34

(34.0) 316L-8TB7-9 －3700(254)

MLE-3/4-XX 3/4 0.75(19.1) 15/16 1.46

(37.1) 316L-12TB7-9 －2400(165)

Micro Long Reducer (MLR)

Micro Long Tee (MLT)

DAJAPart No.

TubeO.D.1

TubeO.D.2



PressureRatingA B


MLR-3/8-1/4-XX 3/8 1/4 1.50(38.1)

0.75(19.1) 316L-6TB7-6-4 －

3300(227)

MLR-1/2-1/4-XX 1/2 1/4 1.50(38.1)

0.75(19.1) 316L-8TB7-6-4 －

3700(254)

MLR-1/2-3/8-XX 1/2 3/8 1.50(38.1)

0.75(19.1) 316L-8TB7-6-6 －

3300(227)

MLR-3/4-1/2-XX 3/4 1/2 1.50(38.1)

0.75(19.1) 316L-12TB7-6-8 －

2400(165)

MLR-1-1/2-XX 1 1/2 1.50(38.1)

0.75(19.1) 316L-16TB7-6-8 －

2400(165)

MLR-1-3/4-XX 1 3/4 1.50(38.1)

0.75(19.1) 316L-16TB7-6-12 －

2400(165)

DAJAPart No.

TubeO.D.



Part No.2Pressure

RatingA B FFlat L


MLT-1/4-XX 1/4 2.46(62.5)

0.75(19.1) 7/16 1.23

(31.2) 316L-4TB7-3 －5100(351)

MLT-3/8-XX 3/8 2.40(61.0)

0.75(19.1) 7/16 1.20

(30.5) 316L-6TB7-3 －3300(227)

MLT-1/2-XX 1/2 2.68(68.1)

0.75(19.1) 11/16 1.34

(34.0) 316L-8TB7-3 －3700(254)

MLT-3/4-XX 3/4 2.91(73.9)

0.75(19.1) 15/16 1.46

(37.1) 316L-12TB7-3 －2400(165)

EP Grade, electro-polish finish with 5 µin. (0.13 µm) Ra surface finish plus UHP cleaning and packaging. Standard BA grade surface finish is 10 µin. (0.25 µm) Ra.

Tube ends are machined with a squareface and corners to enhance alignmentand maintain tube wall uniformity.

Precisely finished diametermatches tube diameter.

Standard surface finish is 10 µin average.(0.25 µm) Ra.

Long Butt Weld FittingsLong Butt Weld Fittings

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DA

JA

- 11 -

Micro Long Cross (MLC)

DAJAPart No.

TubeO.D.1

TubeO.D.2



Part No.2Pressure

RatingA B FFlat L L1

Dimensions, in. (mm) psig(bar)MLRT-3/8-

1/4-XX 3/8 1/4 2.39(60.7)

0.75(19.1) 7/16 1.20

(30.5)1.23

(31.2)316L-6TB7-

3-6-4 －3300(227)

MLRT-1/2-1/4-XX 1/2 1/4 2.67

(67.8)0.75

(19.1) 11/16 1.34(34.0)

1.34(34.0)

316L-8TB7-3-8-4 －

3700(254)

MLRT-1/2-3/8-XX 1/2 3/8 2.67

(67.8)0.75

(19.1) 11/16 1.34(34.0)

1.35(34.3)

316L-8TB7-3-8-6 －

3300(227)

MLRT-3/4-3/8-XX 3/4 3/8 2.91

(73.9)0.75

(19.1) 15/16 1.46(37.1)

1.35(34.3)

316L-12TB7-3-12-6 －

2400(165)

MLRT-3/4-1/4-XX 3/4 1/4 2.91

(73.9)0.75

(19.1) 15/16 1.46(37.1)

1.48(37.6)

316L-12TB7-3-12-4 －

2400(165)

DAJAPart No.

TubeO.D.



PressureRatingA B F

Flat L


MLC-1/4-XX 1/4 2.45(62.2)

0.75(19.1) 7/16 1.23

(31.2) 316L-4TB7-4 －5100(351)

MLC-3/8-XX 3/8 2.39(60.7)

0.75(19.1) 7/16 1.20

(30.5) 316L-6TB7-4 －3300(227)

MLC-1/2-XX 1/2 2.61(66.3)

0.75(19.1) 11/16 1.34

(34.0) 316L-8TB7-4 －3700(254)

Micro Long R-Tee (MLRT) Micro Long Reducing Cross (MLRC)

Long Butt Weld FittingsLong Butt Weld Fittings

DAJAPart No.

TubeO.D.1

WallThickness

1

TubeO.D.2

WallThickness

2



PressureRatingA B F

Flat L


MLRC-3/8-1/4-

XX3/8 0.035 1/4 0.035 2.39

(60.7)0.75

(19.1) 7/16 1.20(30.5) －－

3300(227)

DA

JA MEMO

High Purity Pipes & Pipe Fittings

Metal Gasket Face Seal Fittings

Micro Butt-Welding Fittings lok-DJ® Compression Fittings

Diaphragm Valve & Ball Valve UHP CGA/DISS Fittings Series

Documents

DA- 2 - DA JA - 3 - Demonstration of Part Number Product Category Description Product Code EP 5Ra Finish BA 10Ra Finish or Mill Finish Mini Butt Weld Fittings Micro Reducer MR MR6-1/2-1/4-SE