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STRAUB-FLEX

All pipe materials can be reliably connected with STRAUB-FLEX couplings. STRAUB-FLEX pipe couplings enable pipe connections for practically all conceivable pipe diameters, for the same or different types of pipe materials, various media and temperatures as well as for a wide range of the operating pressure values. The sealing sleeve separates the coupling casing from the pipe surface so that sound, vibrations and oscillations are optimally damped.
Επιστροφή Τεχνικό Φυλλάδιο
STRAUB-FLEX
STRAUB-FLEX
STRAUB-FLEX
STRAUB-FLEX
STRAUB-FLEX
STRAUB-FLEX
STRAUB-FLEX
STRAUB-FLEX

FLEX 1 ø 48.3 - 168.3 mm

adMm Clamping range [mm] PN industry [bar] PN shipbuilding [bar] B [mm] DV [mm] C [mm] X [mm] R without strip insert [mm] R with strip insert [mm] Torque rate [Nm]
48.3 47.0 - 50.0 25 16 75 70 35 83 5 42125 7.5
54 52.5 - 55.5 25 16 75 76 35 88 5 42125 7.5
57 55.5 - 58.5 25 16 75 79 35 94 5 42125 7.5
60.3 59.0 - 63.0 25 16 75 82 35 95 5 42125 7.5
70 69.5 - 71.0 25 16 94 95 51 112 5 45778 7.5
73 71.5 - 75.0 25 16 94 95 51 112 5 45778 7.5
76.1 74.5 - 77.5 25 16 94 98 51 119 5 45778 7.5
80 79.5 - 81.5 25 16 94 106 51 127 5 45778 7.5
84 82.5 - 85.5 25 16 94 106 51 127 5 45778 7.5
88.9 87.5 - 90.5 25 16 94 111 51 132 5 45778 7.5
100.6 99.0 - 102.5 25 16 94 123 51 145 5 45778 7.5
101.6 100.0 - 103.5 25 16 94 124 51 145 5 45778 7.5
104 102.5 - 105.5 20 16 94 126 51 146 5 45778 7.5
104.8 103.0 - 106.5 20 16 94 127 51 146 5 45778 7.5
108 106.5 - 110.0 20 16 94 130 51 151 5 45778 7.5
114.3 112.5 - 116.0 20 16 94 136 51 160 5 45778 7.5
127 125.0 - 129.0 20 16 107 149 62 168 5 12905 10
129 127.0 - 131.0 20 16 107 151 62 170 5 12905 10
130.2 128.5 - 132.0 20 16 107 152 62 170 5 12905 10
133 131.0 - 135.0 16 16 107 155 62 174 5 12905 10
139.7 138.0 - 141.5 16 16 107 162 62 180 5 12905 10
141.3 139.5 - 143.0 16 16 107 163 62 182 5 12905 10
154 152.0 - 156.0 16 16 107 176 62 198 5 12905 10
159 157.0 - 161.0 16 16 107 181 62 203 5 12905 10
168.3 166.0 - 170.5 16 16 107 190 62 212 5 12905 10
Remarks:
-Follow fitting instructions
- PN (Industry) = working pressure considering the application loads
- Test pressure = PN (Industry) x 1.5 (for example industry, water supply etc.)
- Burst pressure = approx. PN (Industry) x 2
- PN (Shipbuilding) = nominal pressure, includes four times safety factor (e.g. shipbuilding) Strip inserts are optional accessories
- Additional sealing sleeves, pressure and temperature ranges on request
- FPM / FKM only available as STRAUB-OPEN-FLEX

FLEX 2 ø 172.0 - 2032.0 mm

adMm Clamping range [mm] PN Industry [bar] 25 PN Industry [bar] 6 PN Industry [bar] 10 PN Industry [bar] 16 PN Industry [bar] 20 PN Industry [bar] 2.5
172 170 - 174 W2 | W5 W2 | W5 W2 | W5 - - -
180 178 - 182 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5
200 198 - 202 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5
219.1 217 - 222 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5
250 248 - 253 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5
267 264 - 270 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W2 | W5
273 270 - 276 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W2 | W5
304 301 - 307 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5
323.9 321 - 327 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5
355.6 353 - 358 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5
406.4 404 - 409 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5
457.2 454 - 460 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5
508 505 - 511 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5
558.8 556 - 562 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1
609.6 606 - 613 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1
711.2 708 - 715 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 W1
762 758 - 766 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 W1
812.8 809 - 817 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 -
914.4 910 - 918 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 W1 -
1016 1012 - 1020 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 W1 -
1117.6 1114 - 1122 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 - -
1219.2 1215 - 1224 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 - -
1320.8 1316 - 1325 W1 | W2 | W5 W1 | W5 W1 W1 - -
1422.4 1418 - 1427 W1 | W2 | W5 W1 | W5 W1 W1 - -
1524 1519 - 1529 W1 | W2 | W5 W1 | W5 W1 W1 - -
1600 1595 - 1605 W1 | W2 | W5 W1 | W5 W1 - - -
1625.6 1621 - 1631 W1 | W2 | W5 W1 | W5 W1 - - -
1727.2 1722 - 1732 W1 | W2 | W5 W1 | W5 W1 - - -
1828.8 1824 - 1834 W1 | W2 | W5 W1 | W5 W1 - - -
1930.4 1925 - 1935 W1 | W2 | W5 W1 | W5 W1 - - -
2032 2027 - 2037 W1 | W2 | W5 W1 | W5 W1 - - -
Remarks:
- Follow fitting instructions
- PN (Industry) = working pressure considering the application loads
- Test pressure = PN (Industry) x 1.5 (for example industry, water supply etc.)
- Burst pressure = approx. PN (  ) x 2
- PN (shipbuilding) = nominal pressure, includes four times safety factor (e.g. shipbuilding)
- Strip inserts are optional accessories (see page 87)
- Additional sealing sleeves, pressure and temperature ranges on request

FLEX 3 ø 219.1 - 2032.0 mm

adMm Clamping range [mm] PN Industry [bar] 25 PN Industry [bar] 6 PN Industry [bar] 10 PN Industry [bar] 16 PN Industry [bar] 20 PN Industry [bar] 2.5
219.1 216 - 222 W2 | W5 W2 | W5 W2 | W5 W2 | W5 - -
250 247 - 253 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W1 | W5 W1 | W5
267 264 - 270 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W1 | W5 W1 | W5
273 270 - 276 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W1 | W5 W1 | W5
304 301 - 307 W2 | W5 W2 | W5 W2 | W5 W2 | W5 W1 | W5 W1 | W5
323.9 321 - 327 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5
355.6 352 - 358 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5
406.4 403 - 409 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5
457.2 454 - 460 W1 | W2 | W5 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5
508 504 - 512 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5*
558.8 555 - 562 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5*
609.6 606 - 613 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5*
711.2 707 - 715 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1 | W5*
762 758 - 766 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1 | W5*
812.8 809 - 817 W1 | W2 | W5 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1 | W5*
914.4 910 - 918 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1 | W5* W1 | W5*
1016 1012 - 1020 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1 | W5* W1*
1117.6 1113 - 1122 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1 | W5* W1*
1219.2 1215 - 1224 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1* W1*
1320.8 1316 - 1325 W1 | W2 | W5 W1 | W5 W1 | W5 W1 | W5* W1* W1*
1422.4 1418 - 1427 W1 | W2 | W5 W1 | W5 W1 | W5* W1 | W5* W1* -
1524 1519 - 1529 W1 | W2 | W5 W1 | W5 W1 | W5* W1* W1* -
1600 1595 - 1605 W1 | W2 | W5 W1 | W5 W1 | W5* W1* W1* -
1625.6 1621 - 1631 W1 | W2 | W5 W1 | W5 W1 | W5* W1* W1* -
1727.2 1722 - 1732 W1 | W2 | W5 W1 | W5 W1 - - -
1828.8 1824 - 1834 W1 | W2 | W5 W1 | W5 W1 - - -
1930.4 1925 - 1935 W1 | W2 | W5 W1 | W5 W1 - - -
2032 2027 - 2037 W1 | W2 | W5 W1 | W5 W1 - - -
Remarks:
- Follow fitting instructions
- PN = working pressure considering the application loads
- Test pressure = PN x 1.5 (for example industry, water supply etc.)
- Burst pressure = approx. PN x 2
- Strip inserts included
- Additional sealing sleeves, pressure and temperature ranges on request

* These products are only available on request

FLEX 3.5 ø 323.9 - 1219.2 mm

adMm Clamping range [mm] PN Industry [bar] 25 PN Industry [bar] 6 PN Industry [bar] 10 PN Industry [bar] 16 PN Industry [bar] 20 PN Industry [bar] 2.5
323.9 320 - 327 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
355.6 352 - 359 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
406.4 402 - 410 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
457.2 453 - 461 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
508 504 - 512 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
558.8 555 - 563 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5*
609.6 605 - 614 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5*
655 651 - 659 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
711.2 707 - 715 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
762 758 - 766 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
812.8 809 - 817 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
914.4 910 - 918 W1 | W5 W1 | W5 W1 | W5 W5* W5* W5*
1016 1011 - 1021 W1 | W5 W1 | W5 W1 | W5 W5* W5* -
1117.6 1112 - 1123 W1 | W5 W1 | W5 W1 | W5 W5* W5* -
1219.2 1214 - 1224 W1 | W5 W1 | W5 W1 | W5 W5* - -
Remarks:
- Follow fitting instructions
- PN = working pressure considering the application loads
- Test pressure = PN x 1.5 (for example industry, water supply etc.)
- Burst pressure = approx. PN x 2
- Strip inserts included
- Additional sealing sleeves, pressure and temperature ranges on request

* These products are only available on request

FLEX 4 ø 323.9 - 812.8 mm

adMm Clamping range [mm] PN Industry [bar] 25 PN Industry [bar] 6 PN Industry [bar] 10 PN Industry [bar] 16 PN Industry [bar] 20 PN Industry [bar] 2.5
323.9 320 - 327 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
355.6 352 - 359 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
406.4 403 - 409 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
457.2 454 - 460 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5
508 505 - 512 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5*
558.8 555 - 562 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5*
609.6 606 - 613 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5*
655 652 - 658 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
711.2 707 - 715 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
762 758 - 766 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
812.8 809 - 817 W1 | W5 W1 | W5 W1 | W5 W1 | W5 W5* W5*
Remarks:
- Follow fitting instructions
- PN = working pressure considering the application loads
- Test pressure = PN x 1.5 (for example industry, water supply etc.)
- Burst pressure = approx. PN x 2
- Strip inserts included
- Additional sealing sleeves, pressure and temperature ranges on request

* These products are only available on request

STRAUB pipe couplings are made of the same or different materials depending on the diameter and size. The following overview shows the details. If you have any questions, please contact our application technology department.

FLEX 1 ø 48.3 - 168.3 mm

Components W1 W2 W5
- AISI 316 L or similar AISI 316 L or similar
- AISI 4135 A4 - 80
- AISI 12L14, galvanised AISI 316 L or similar
- AISI 316 L or similar / PVDF AISI 316 L or similar / PVDF
Sealing sleeve Temperatur Medium

FLEX 2 ø 172.0 - 2032.0 mm

Components W1 W2 W5
S355MC, hot-dip galvanised AISI 316 L or similar AISI 316 L or similar
AISI 4135 AISI 4135 A4 - 80
AISI 12L14, galvanised AISI 12L14, galvanised AISI 316 L or similar
AISI 316 L or similar / HDPE AISI 316 L or similar / HDPE AISI 316 L or similar / HDPE
Sealing sleeve Temperatur Medium

FLEX 3 ø 219.1 - 2032.0 mm

Components W1 W2 W5
S355MC, hot-dip galvanised AISI 316 L or similar AISI 316 L or similar
AISI 4135 AISI 4135 A4 - 80
AISI 12L14, galvanised AISI 12L14, galvanised AISI 316 L or similar
AISI 316 L or similar / HDPE AISI 316 L or similar / HDPE AISI 316 L or similar / HDPE
Sealing sleeve Temperatur Medium

FLEX 3.5 ø 323.9 - 1219.2 mm

Components W1 W2 W5
S355MC, hot-dip galvanised - S32101 (LDX)
AISI 4135 - A4 - 80
AISI 12L14, galvanised - AISI 316 L or similar
AISI 316 L or similar / HDPE - AISI 316 L or similar / HDPE
Sealing sleeve Temperatur Medium

FLEX 4 ø 323.9 - 812.8 mm

Components W1 W2 W5
S355MC, hot-dip galvanised - S32101 (LDX)
AISI 4135 - A4 - 80
AISI 12L14, galvanised - AISI 316 L or similar
AISI 301 / HDPE - AISI 316 L or similar / HDPE
Sealing sleeve Temperatur Medium