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LK Group

LK Group

  • LK Armatur

    LK Armatur is a leading producer in Europe, manufactures millions of valves per year for the global HVAC market. Our solutions are based on a comprehensive view of how valves, control units, components and prefabricated products work together. Svenska English Deutsch Italiano Yкраїнська Suomi

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    LK Systems is the leading manufacturer of easy-to-install systems for heating and tap water distribution and pre-insulated pipes in the Nordics. Through our prefabrication factory, we also provide tailor-made solutions that simplify the installation process even further. Svenska English Norsk Suomi

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    Our PEX Pipe Extrusion business area is an innovative manufacturer of high-quality plastic pipes for the heating and plumbing industry. Our core is the efficient, high-technology production process for crosslinked PE-Xa pipes, resulting in products with a unique combination of flexibility and hydrostatic strength. English

  • LK Group

    LK is a family-owned trading and production group, operating on a global scale within the HVAC-area. We are the market leader in Sweden and has an increasing sales of products, systems and solutions in the Nordic countries, Europe and the USA. Svenska English
303 Straight Coupler

303 Straight Coupler

Straight Coupler suitable for heating and tap water, air, gas and some oils. For more information, see separate product sheet for compression fittings.

303 Straight Coupler

  • Variants
  • Detailed Information
  • Documentation

Variants

303 - Compression fitting / Female thread

303 - Compression fitting / Female thread 19 variants

The connections are also available in a chrome-plated version on request. Dimensions according to dimension sketch are only indicative and not part of the specification. Nuts on couplings in sizes up to 28 mm have wrench flats with grooves. Sizes 35, 42 and 54 mm have nuts with hexagonal heads.

Article Dim. D mm G mm L mm Weight (kg) Dimensional sketch Item List
189 08 21 8 x F8 17 11 33 0.03
189 08 62 10 x F10 18 13 34 0.04
189 08 70 10 x F15 18 16 36 0.05
189 09 04 12 x F10 20 13 36 0.04
189 09 12 12 x F15 20 15 39 0.06
189 09 53 15 x F10 21 12 35 0.06
189 09 61 15 x F15 22 15 40 0.07
189 09 79 15 x F20 22 15 43 0.08
189 09 95 16 x F15 22 15 42 0.08
189 10 01 18 x F15 24 15 43 0.08
189 10 19 18 x F20 24 17 45 0.08
189 10 35 22 x F15 24 14 39 0.1
189 10 43 22 x F20 23 17 44 0.1
189 10 50 22 x F25 25 22 49 0.2
189 10 92 28 x F20 25 17 46 0.1
189 11 00 28 x F25 26 18 48 0.2
189 11 34 35 x F25 30 22 56 0.2
189 11 42 35 x F32 29 22 56 0.2
189 11 91 54 x F50 40 27 71 0.6

189 08 21

Dim. 8 x F8
D mm 17
G mm 11
L mm 33
Weight (kg) 0.03
Dimensional sketch
Item list

189 08 62

Dim. 10 x F10
D mm 18
G mm 13
L mm 34
Weight (kg) 0.04
Dimensional sketch
Item list

189 08 70

Dim. 10 x F15
D mm 18
G mm 16
L mm 36
Weight (kg) 0.05
Dimensional sketch
Item list

189 09 04

Dim. 12 x F10
D mm 20
G mm 13
L mm 36
Weight (kg) 0.04
Dimensional sketch
Item list

189 09 12

Dim. 12 x F15
D mm 20
G mm 15
L mm 39
Weight (kg) 0.06
Dimensional sketch
Item list

189 09 53

Dim. 15 x F10
D mm 21
G mm 12
L mm 35
Weight (kg) 0.06
Dimensional sketch
Item list

189 09 61

Dim. 15 x F15
D mm 22
G mm 15
L mm 40
Weight (kg) 0.07
Dimensional sketch
Item list

189 09 79

Dim. 15 x F20
D mm 22
G mm 15
L mm 43
Weight (kg) 0.08
Dimensional sketch
Item list

189 09 95

Dim. 16 x F15
D mm 22
G mm 15
L mm 42
Weight (kg) 0.08
Dimensional sketch
Item list

189 10 01

Dim. 18 x F15
D mm 24
G mm 15
L mm 43
Weight (kg) 0.08
Dimensional sketch
Item list

189 10 19

Dim. 18 x F20
D mm 24
G mm 17
L mm 45
Weight (kg) 0.08
Dimensional sketch
Item list

189 10 35

Dim. 22 x F15
D mm 24
G mm 14
L mm 39
Weight (kg) 0.1
Dimensional sketch
Item list

189 10 43

Dim. 22 x F20
D mm 23
G mm 17
L mm 44
Weight (kg) 0.1
Dimensional sketch
Item list

189 10 50

Dim. 22 x F25
D mm 25
G mm 22
L mm 49
Weight (kg) 0.2
Dimensional sketch
Item list

189 10 92

Dim. 28 x F20
D mm 25
G mm 17
L mm 46
Weight (kg) 0.1
Dimensional sketch
Item list

189 11 00

Dim. 28 x F25
D mm 26
G mm 18
L mm 48
Weight (kg) 0.2
Dimensional sketch
Item list

189 11 34

Dim. 35 x F25
D mm 30
G mm 22
L mm 56
Weight (kg) 0.2
Dimensional sketch
Item list

189 11 42

Dim. 35 x F32
D mm 29
G mm 22
L mm 56
Weight (kg) 0.2
Dimensional sketch
Item list

189 11 91

Dim. 54 x F50
D mm 40
G mm 27
L mm 71
Weight (kg) 0.6
Dimensional sketch
Item list

Detailed Information

Description

Straight Coupler suitable for heating and tap water, air, gas and some oils. For more information, see separate product sheet for compression fittings.

Technical Data

Max. working pressure: 1.6 MPa
Working temperature: Max. 100 °C
Thread standard: G - female thread
Other data: Material, DZR-brass
Thread standard Dim 8, 12 and 15 mm has cylindrical thread (G) ¼”, ⅜” and ½”

Documentation

Product sheet

303 Straight Coupler