5. STRAUB-FLEX / STRAUB-REP

Transcription

1 5. STRAUB-FLEX / 5.1 STRAUB-FLEX For gas and water supply, sewage treatment, industrial plants, power plants and shipbuilding: STRAUB- FLEX is the optimal pipe joint. Suitable for suction or pressure lines, for thin- or thick walled pipe and nearly every pipe material. Metric Working pressure up to 16/ 25 bar Outside diameters 48.3 up to 4000 mm Temperature range -20 C up to +80 C Example for order: STRAUB-FLEX 1L 76.1, , EPDM, ES Imperial Working pressure up to 232/363 psi Outside diameters 1 1 /2 up to inch Temperature range -4 F up to +176 F Example for order: STRAUB-FLEX 1L 3, , EPDM, ES Sewage treatment plant Paris Méry s/oise Sewer water feed STRAUB-FLEX 2L. Connection of prefabricated fittings. Technical Manual 3/03 Page 50

2 5.1.1 Metric Specification STRAUB-FLEX 1L Ø mm Materials Components W1 W2 W4 W5 Casing AISI 316 Ti AISI 316 Ti Screws AISI 4135* AISI 316 L Bolts AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L PA/GF AISI 316 L PA/GF from 127 mm HDPE from 127 mm HDPE Sealing sleeve Temp.: -20 C up to +80 C EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -20 C up to +80 C NBR Medium: water, gas, oil, fuel and other hydrocarbons Sealing sleeve Temp.: -20 C up to +180 C VITON A* Medium: ozone, oxygen, acids, gas, oil and fuel (only strip insert) Chemical resistance of sealing sleeve on request. Versions in W2 or W5. Pipe Clamping range Nominal Working pressure pressure Dimensional data Setting gap between pipe ends Rmax. Locking bolts braced out torque allen thread AD PN B C DV KV strip insert rate M... (mm) (mm) (bar) (bar) (mm) (mm) (mm) (mm) (mm) (Nm) (mm) * * * * * Right of alteration reserved. STRAUB-FLEX / Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). * Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). - : Working pressure considernig the application loads. - Nominal pressure, includes four times safety factor, for applications that require authorisation of classification societies (e.g. ABS, DNV, etc.). Remarks: - Follow fitting / disassembly instructions. Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 5 mm - Weight of the pipe joints see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. E / Technical Manual 3/03 Page 51

3 5.1.2 Metric Specification STRAUB-FLEX 2 Ø mm Components Materials W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L / HDPE AISI 316 L / HDPE AISI 316 L / HDPE Sealing sleeve Temp.: -20 C up to +80 C EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -20 C up to +80 C NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. L-, LS-, and LU-version in W2 or W5. H- and XS-version in W1. DV = Outside diameter of the braced pipe joint = AD + 27 mm B C = Width of the pipe joint FLEX 2L = 138 mm FLEX 2LS = 139 mm FLEX 2LU = 141 mm FLEX 2H = 142 mm FLEX 2XS = 153 mm = Distance between sealing lips = 91 mm R max. = Setting gap between pipe ends strip insert = 35 mm out strip insert = 10 mm *Two-piece execution Pipe Clamping range Working pressure Torque rate Locking bolts FLEX 2 FLEX 2 FLEX 2 L LS/LS* LU/LU* H/H* XS L LS/ LU/ H/H* XS AD (mm) (mm) (bar) (bar) (bar) (bar) (bar) (Nm) LS* (Nm) LU* (Nm) (Nm) (Nm) /5.0* /20* /4.0* /25* /4.0* /25* /3.5* /25* /3.5* /30* /3.0* /30* /2.5* /35* /2.5* 5.0/5.0* 7.0/7.0* /40*70/50*80/60* * 4.5* 7.0* * 60* 70* * 4.0* 6.0* * 60* 70* * 4.0* 6.0* * 70* 80* * 4.0* 6.0* * 70* 80* - Available for all pipe sizes from 180 up to 1600 mm Right of alteration reserved. Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). ** Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution Remarks: - Follow fitting / disassembly instructions. Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 10 mm. - Weight of the pipe joints see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. L/ LS/ LS* 2 (4*) x M10 socket 8 mm LU/ LU*/ H/H* 2 (4*) x M12 socket 10 mm XS 2 x M20 socket 17 mm E / Technical Manual 3/03 Page 52

4 5.1.3 Metric Specification STRAUB-FLEX 3 Ø mm DV = Outside diameter of the braced pipe joint = AD + 38 mm B C Components Materials = Width of the pipe joint FLEX 3LS = 210 mm FLEX 3H = 212 mm FLEX 3X = 218 mm = Distance between sealing lips = 127 mm R max. = Setting gap between pipe ends strip insert = 60 mm out strip insert = 15 mm W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L AISI 316 L AISI 316 L Sealing sleeve Temp.: -20 C up to +80 C EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -20 C up to +80 C NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. LS-version in W2 or W5. H- and X-version in W1. Pipe Clamping range Working pressure Torque rate * Two-piece execution Locking bolts FLEX 3 FLEX 3 LS/LS* H/H* X LS/LS* H/H* X AD (mm) (mm) (bar) (bar) (bar) (Nm) (Nm) (Nm) /3.5* 8.5/8.5* 17 50/50* 100/80* /3.0* 8.0/8.0* 16 60/50* 100/80* /3.0* 7.5/7.5* 15 60/60* 100/80* /2.5* 7.0/7.0* 14 60/60* 100/80* /2.5* 6.5/6.5* 13 60/60* 120/100* /2.5* 6.0/6.0* 12 60/60* 120/100* /2.0* 5.5/5.5* 11 70/70* 120/100* /2.0* 5.5/5.5* 11 70/70* 140/100* /2.0* 5.0/5.0* 10 70/70* 140/100* 220 Available for all pipe sizes from 558 up to 2032 mm FLEX 3 LS/LS* H/H* X 3 (6*) x M12 socket 10 mm 3 (6*) x M16 socket 14 mm 3 x M20 socket 17 mm Right of alteration reserved. STRAUB-FLEX / Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). **Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution. Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 15 mm. - Weight of the pipe joints see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. E / Technical Manual 3/03 Page 53

5 5.1.4 Imperial Specification STRAUB-FLEX 1L Ø 1 1 / 2-6 inch Materials Components W1 W2 W4 W5 Casing AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L PA/GF AISI 316 L PA/GF from 5" HDPE from 5" HDPE Sealing sleeve Temp.: -4 F up to +176 F EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -4 F up to +176 C NBR Medium: water, gas, oil, fuel and other hydrocarbons Sealing sleeve Temp.: -4 F up to +356 F VITON A# Medium: ozone, oxygen, acids, gas, oil and fuel (only strip insert) Chemical resistance of sealing sleeve on request. Versions in W2 or W5. Pipe-Ø For pipe AD (tolerence range) Working Type pressure approval pressure Dimensional data Setting gap between pipe ends Right of alteration reserved. Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). ** Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). - : Working pressure considering the applications loads. - Type approval pressure for applications that require authorisation of classification societies (e.g. ABS, DNV, etc.). Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 0.2 inch. - Weight of the pipe joints see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. Rmax. Locking bolts braced out torque allen thread Nominal AD B C DV KV strip insert rate M... (inch) (mm) (inch) (psi) (bar) (psi) (inch) (inch) (inch) (inch) (inch) (ft.lbf) (mm) 1 1 /2" /8" /4" "# /2"# "# " "# " /2" " " /4" "# " " " /4" /2" " " /4" " US / Technical Manual 3/03 Page 54

6 5.1.5 Imperial Specification STRAUB-FLEX 2 Ø inch Components Materials W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L / HDPE AISI 316 L / HDPE AISI 316 L / HDPE Sealing sleeve Temp.: -4 F up to +176 F EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -4 F up to +176 F NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. L-, LS-, and LU-version in W2 or W5. H- and XS-version in W1. DV = Outside diameter of the braced *Two-piece execution pipe joint = AD inch B = Width of the pipe joint FLEX 2L = 5.43 inch FLEX 2LS = 5.47 inch FLEX 2LU = 5.55 inch FLEX 2H = 5.59 inch FLEX 2XS = 6.02 inch C = Distance between sealing lips = 3.58 inch R max. = Setting gap between pipe ends strip insert = 1.4 inch out strip insert = 0.4 inch Pipe-Ø For pipe AD (tolerence range) Working pressure Torque rate Locking bolts FLEX 2 FLEX 2 FLEX 2 L LS/LS* LU/LU* H/H* XS L LS/ LU/ H/H* XS Nom. (inch) AD (mm) (inch) (psi) (psi) (psi) (psi) (psi) LS* (ft.lbf) (ft.lbf) LU* (ft.lbf) (ft.lbf) (ft.lbf) 7.1" " " " " " " " " " " " " " /73* /15* " /58* /19* " /58* /19* " /51* /19* " /51* /22* " /44* /22* " /36* /26* " /36* 73/73* 102/102* /26*52/37* 59/44* " * 65* 102* * 44* 52* - 56" * 58* 87* * 44* 52* - 60" * 58* 87* * 52* 59* - 63" * 58* 87* * 52* 59* - Available for all pipe sizes from 7.1" up to 63" Right of alteration reserved. Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). ** Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution. Remarks: - Follow fitting / disassembly instructions. Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 0.4 inch. - Weight of the pipe joints see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. L/ LS/ LS* 2 (4*) x M10 allen 8 mm LU/ LU*/ H/H* 2 (4*) x M12 allen 10 mm XS 2 x M20 allen 17 mm STRAUB-FLEX / US / Technical Manual 3/03 Page 55

7 5.1.6 Imperial Specification STRAUB-FLEX 3 Ø inch Components Materials W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L AISI 316 L AISI 316 L Sealing sleeve Temp.: -4 F up to +176 F EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -4 F up to +176 F NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. LS-version in W2 or W5. H- and X-version in W1. DV = Outside diameter of the braced pipe joint = AD inch B C = Width of the pipe joint FLEX 3LS = 8.27 inch FLEX 3H = 8.35 inch FLEX 3X = 8.58 inch = Distance between sealing lips = 5 inch R max. = Setting gap between pipe ends strip insert = 2.4 inch out strip insert = 0.6 inch *Two-piece execution Pipe-Ø For pipe AD (tolerence range) FLEX 3 FLEX 3 FLEX 3 LS/LS* H/H* X LS/LS* H/H* X LS/LS* H/H* Nominal AD /LS* (inch) (mm) (inch) (psi) (psi) (psi) (ft.lbf) (ft.lbf) (ft.lbf) 22" " " " " " " (6*) 3 (6*) 44" x M12 x M16 48" /51* 123/123* /37* 74/59* 105 allen allen 52" /44* 116/116* /37* 74/59* " /44* 109/109* /44* 74/59* mm 14 mm 60" /36* 102/102* /44* 74/59* " /36* 94/94* /44* 89/74* " /36* 87/87* /44* 89/74* " /29* 80/80* /52* 89/74* " /29* 80/80* /52* 104/74* " /29* 73/73* /52* 104/74* 165 Available for all pipe sizes from 22" up to 80" X 3 x M20 allen 17 mm Right of alteration reserved. Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). - All shown in bold type are standard pipe sizes. **Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution. Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 0.6 inch. - Weight of the pipe joints see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. US / Technical Manual 3/03 Page 56

8 5.1 Corroded pipe holes, cracks, fractures, or leaks can be repaired simply and rapidly STRAUB- REP clamp. Captive stainless steel bolting system Working pressure up to 16 bar Outside diameters 48.3 up to 4000 mm Temperature range -20 C up to +80 C Example for order: 1L 76.1, , EPDM, ES Captive stainless steel bolting system Working pressure up to 232 psi Outside diameters 1 1 / 2 up to inch Temperature range -4 F up to +176 F Example for order: 1L 3, , EPDM, ES Public Utility Board (PUB), Singapore Potable water line 6 bar/9 psi operating pressure Subsequent installation of a Butterfly valve REP 2H mm/24 STRAUB-FLEX / Technical Manual 3/03 Page 57

9 5.2.1 Metric Specification 1L Ø mm Materials Components W1 W2 W4 W5 Casing AISI 316 Ti AISI 316 Ti Screws AISI 4135* AISI 316 L Bolts AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L PA/GF AISI 316 L PA/GF from 127 mm HDPE from 127 mm HDPE Sealing sleeve Temp.: -20 C up to +80 C EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -20 C up to +80 C NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. Versions in W2 or W5. Pipe Clamping range Nominal pressure Dimensional data Setting gap between pipe ends Rmax. Locking bolts braced out torque allen thread AD PN B C DV KV strip insert rate M... (mm) (mm) (bar) (mm) (mm) (mm) (mm) (mm) (Nm) (mm) Right of alteration reserved. Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). * Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 5 mm. - Weight of the repair clamps see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. E / Technical Manual 3/03 Page 58

10 5.2.2 Metric Specification 2 Ø mm Components Materials W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L / HDPE AISI 316 L / HDPE AISI 316 L / HDPE Sealing sleeve Temp.: -20 C up to +80 C EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -20 C up to +80 C NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. L-, LS-, and LU-version in W2 or W5. H-version in W1. DV = Outside diameter of the braced pipe joint = AD + 27 mm B C = Width of the pipe joint REP 2L = 138 mm REP 2LS = 139 mm REP 2LU = 141 mm REP 2H = 142 mm = Distance between sealing lips = 91 mm R max. = Setting gap between pipe ends strip insert = 35 mm out strip insert = 10 mm *Two-piece execution Pipe Clamping range Working pressure Torque rate Locking bolts REP 2 REP 2 REP 2 L LS LU/LU* H* L LS LU/ H* AD (mm) (mm) (bar) (bar) (bar) (bar) (Nm) (Nm) LU* (Nm) (Nm) * * * * * * * 16.0* * 30* * 16.0* * 30* * 16.0* * 30* * 16.0* * 30* * 16.0* * 40* * 16.0* * 40* /10.0* 16.0* /40* 40* * * * * * * * * * * * * * * * * * * Available for all pipe sizes from 180 up to 1219 mm L/LS 2 x M10 socket 8 mm LU/ LU*/H* 2 (4*) x M12 socket 10 mm Right of alteration reserved. STRAUB-FLEX / Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). **Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution. Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 10 mm. - Weight of the repair clamps see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. E / Technical Manual 3/03 Page 59

11 5.2.3 Metric Specification 3 Ø mm Components Materials W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L AISI 316 L AISI 316 L Sealing sleeve Temp.: -20 C up to +80 C EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -20 C up to +80 C NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. LS-version in W2 or W5. H-version in W1. DV = Outside diameter of the braced pipe joint = AD + 38 mm B C = Width of the pipe joint REP 3LS = 210 mm REP 3H = 212 mm = Distance between sealing lips = 127 mm R max. = Setting gap between pipe ends strip insert = 60 mm out strip insert = 15 mm *Two-piece execution Pipe Clamping range Working pressure Torque rate Locking bolts REP 3 REP 3 REP 3 LS/LS* H* LS/LS* H* AD (mm) (mm) (bar) (bar) (Nm) (Nm) /3.5* 8.5* 60/50* 60* * 8.0* 50* 60* * 7.5* 60* 70* * 7.0* 60* 70* * 6.5* 60* 80* * 6.0* 60* 80* * 5.5* 70* 90* * 5.5* 70* 90* * 5.0* 70* 100* Available for all pipe sizes from 558 up to 2032 mm LS/LS* H* 3 (6*) x M12 socket 10 mm 6* x M16 socket 14 mm Right of alteration reserved. Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). **Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution. Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 15 mm. - Weight of the repair clamps see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. E / Technical Manual 3/03 Page 60

12 5.2.4 Imperial Specification 1L Ø 1 1 / 2-6 inch Materials Components W1 W2 W4 W5 Casing AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L PA/GF AISI 316 L PA/GF from 5" HDPE from 5" HDPE Sealing sleeve Temp.: -4 F up to +176 F EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -4 F up to +176 F NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. Versions in W2 or W5. Pipe-Ø For pipe AD (tolerence range) Type approval pressure Dimensional data Setting gap between pipe ends Rmax. Locking bolts braced out torque allen thread Nominal AD B C DV KV strip insert rate M... (inch) (mm) (inch) (psi) (inch) (inch) (inch) (inch) (inch) (ft.lbf) (mm) 1 1 /2" /8" /4" " /2" " " " " /2" " " /4" " " " " /4" /2" " " /4" " Right of alteration reserved. STRAUB-FLEX / Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). ** Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 0.2 inch. - Weight of the repair clamps see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional cost. US / Technical Manual 3/03 Page 61

13 5.2.5 Imperial Specification 2 Ø inch Components Materials W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L / HDPE AISI 316 L / HDPE AISI 316 L / HDPE Sealing sleeve Temp.: -4 F up to 176 F EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -4 F up to 176 F NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. L-, LS-, and LU-version in W2 or W5. H-version in W1. DV = Outside diameter of the braced pipe joint = AD inch B C = Width of the pipe joint REP 2L = 5.43 inch REP 2LS = 5.47 inch REP 2LU = 5.55 inch REP 2H = 5.59 inch = Distance between sealing lips = 3.58 inch R max. = Setting gap between pipe ends strip insert = 1.4 inch out strip insert = 0.4 inch Pipe-Ø For pipe AD (tolerence range) Working pressure Torque rate Locking bolts REP 2 REP 2 REP 2 L LS LU/LU* H* L LS LU/ H* Nom. (inch) AD (mm) (inch) (psi) (psi) (psi) (psi) (ft.lbf) (ft.lbf) LU* (ft.lbf) (ft.lbf) 7.1" " " * * " * * " * * - 10" * 232* * 30* 12" * 232* * 30* 12" * 232* * 30* 14" * 232* * 30* 16" * 232* * 40* 18" * 232* * 40* 20" * 232* * 40* 22" * * 24" * * 28" * * 30" * * 32" * * 36" * * 40" * * 44" * * 48" * * Available for all pipe sizes from 7.1" up to 48" *Two-piece execution L/ LS 2 x M10 allen 8 mm LU/ LU*/ H* 2 (4*) x M12 allen 10 mm Right of alteration reserved. Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). ** Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution. Remarks: - Follow fitting / disassembly instructions. Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 0.4 inch. - Weight of the repair clamps see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. US / Technical Manual 3/03 Page 62

14 5.2.6 Imperial Specification 3 Ø inch Components Materials W1 W2 W4 W5 Casing AISI 1024, hot-dip galv. AISI 316 Ti AISI 316 Ti Screws AISI 4135** AISI 4135** AISI 316 L Bolts AISI 12L 14, galvanized AISI 12L 14, galvanized AISI 316 L Strip insert (option) AISI 316 L AISI 316 L AISI 316 L Sealing sleeve Temp.: -4 F up to +176 F EPDM Medium: all qualities of water, waste water, air, solids and chemical products Sealing sleeve Temp.: -4 F up to +176 F NBR Medium: water, gas, oil, fuel and other hydrocarbons Chemical resistance of sealing sleeve on request. LS-version in W2 or W5. H-version in W1. DV = Outside diameter of the braced pipe joint = AD inch B C = Width of the pipe joint REP 3LS = 8.27 inch REP 3H = 8.35 inch = Distance between sealing lips = 5 inch R max. = Setting gap between pipe ends strip insert = 2.4 inch out strip insert = 0.6 inch *Two-piece execution Pipe-Ø For pipe AD (tolerence range) Working pressure REP 3 Torque rate REP 3 LS/LS* H* LS/LS* H* Nominal AD (inch) (mm) (inch) (psi) (psi) (ft.lbf) (ft.lbf) 22" " " " " " " " " /51* 123* 44/37* 44* 52" * 116* 37* 44* 56" * 109* 44* 52* 60" * 102* 44* 52* 64" * 94* 44* 59* 68" * 87* 44* 59* 72" * 80* 52* 66* 76" * 80* 52* 66* 80" * 73* 52* 74* Available for all pipe sizes from 22" up to 80" Locking bolts REP 3 LS/LS* H* 3 (6*) x M12 allen 10 mm 6* x M16 allen 14 mm Right of alteration reserved. STRAUB-FLEX / Legend: - W1 - W5 according to DIN Standard (ASTM F1476 / F1548, ISO/NP / 15838). - All shown in bold type are standard pipe sizes. ** Property class 12.9, Dacromet 500 (zinc-chromate integrated lubricant). * Casing in two-piece execution. Remarks: - Follow fitting / disassembly instructions. - Test pressure = 1,5 x nominal pressure. - Admissible maximum axial movement of the pipes l: 0.6 inch. - Weight of the repair clamps see packing specifications. - Strip insert is required when gap between pipe ends is excessive, in presence of swelling, vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs. US / Technical Manual 3/03 Page 63

15 5.2.7 The concept The coupling differs completely in its concept from clamps a waffle-type seal in which the rubber has to be highly compressed to repair a damaged pipe effectively. In the case of coupling the whole surface between the sealing lips can be used and a very tight seal is achieved thanks to the inherent progressive sealing effect. Further advantages are: very simple to manipulate suitable for temporary (re-usable) and permanent repairs no separate components; a compact ready-to-use mounting assembly very short installation and down time absolutely leak tight fitting tools: tensioning belt, tensioner STRAUB couplings + splice piece In a case where the damage to the pipe exceeds the usable sealing width C of the coupling (see pages 56-61), these provide the perfect, quick and permanent solution. Long splits, corroded areas and leaky joints can be repaired rapidly and economically two STRAUB- GRIP or STRAUB-FLEX couplings and splice piece. Using two STRAUB-GRIP pipe couplings and a suitable spool piece enables large areas of damage to be repaired in a manner that is resistant to axial tension. Installation procedure Remove the damaged section and replace it an appropriate length of pipe fixed in position STRAUB couplings. Centre the couplings over the pipe ends and tighten them to the specified torque. Large holes Long Large pitted Leaky Sheath fractures cracks areas pipe joints Technical Manual 3/03 Page 64

16 Axial misaglinment of the pipework can be compensated out any problem (see also page 70). This method ensures a reliable, tension-free, long-life pipe repair involving a minimal down time for the pipework system concerned. Cardan effect achieved through the use of a splice piece. The flexibility concerning angular deflection and axial misalignment can be useful for the connection of pipes in order to compensate for differences in settling. STRAUB-FLEX / Technical Manual 3/03 Page 65

17 5.3 Allowable pipe diameter tolerances Clamping range Different diameters Metric Type of Outside diameter Clamping range Diameter STRAUB of coupling per AD difference coupling AD ranges +/- AD 1 : AD 2 [mm] [mm / %] [mm / %] FLEX % 2.0 mm REP % 2.0 mm % 2.0% FLEX % 2.0% REP mm 6.0 mm FLEX mm 6.0 mm REP mm 6.0 mm Imperial Type of Outside diameter Clamping range Diameter STRAUB of coupling per AD difference coupling AD ranges +/- AD 1 : AD 2 [inch] [inch / %] [inch / %] FLEX / % 0.08 REP 1 3 * % * % 2.0% FLEX * * 1.0% 2.0% REP * FLEX REP E / Technical Manual 3/03 Page 66

18 5.4 Max. allowable setting gap between pipe ends R Pipe end spacings occur through misalignment, mounting inaccuracies and changes in length. Such distances in total must not exceed value R. A greater in total pipe end spacing can be accommodated when a strip insert is positioned between the gasket lips. Strip insert 1. Axial setting gap between pipe ends 2. Setting gap between pipe ends through angular deflection The gasket has to be protected from abrasion by the pipe ends in the following cases by either reducing the pipe end gap or by using a band insert (Material: stainless steel or HDPE): External pressure (e.g. under water) Vacuum (negative-pressure) Swelling (chemical influence) High temperatures High levels of mechanical or dynamic loading Plastic pipes An appropriate distance between pipe ends is to be included in order that STRAUB-FLEX/-REP couplings can compensate for expansion / contraction movement. Setting gap between pipe ends R STRAUB-FLEX / Metric Type of Outside diameter Setting gap between pipe ends R STRAUB of coupling out coupling AD ranges strip insert [mm] [mm] [mm] FLEX REP FLEX REP FLEX REP E / Technical Manual 3/03 Page 67

19 Imperial Type of Outside diameter Setting gap between pipe ends R STRAUB of coupling out coupling AD ranges strip insert [inch] [inch] [inch] FLEX / REP 1 3 * * FLEX * * REP * FLEX REP US / Technical Manual 3/03 Page 68

20 5.5 Angular deflection a Angular deflection α Pipework systems, whether buried or installed above ground, are subject to various movements such as settling in groundworks, loading by traffic, building subsidence or temperature-induced length changes. Additional dynamic stresses are sometimes encountered especially in such fields as offshore and marine applications. STRAUB products are not rigid connections but are flexible joints that permit all around angular deflection of the pipe axes by up to 5 degrees. Furthermore they offer considerable safety. The gasket is positioned away from any pressure forces and ensures a tension-free and long-life connection even under angular deflection conditions. Type of Outside diameter Angular deflection STRAUB of coupling a coupling [Degree] FLEX / REP up to 60.3 mm / 2 inch 5 from 76.1 mm / 3 inch 4 from mm / 19.7 inch 2 STRAUB-FLEX / E / Technical Manual 3/03 Page 69

21 5.6 Axial movement Dl Axial movement l STRAUB-FLEX couplings are pipe connectors and expansion joints combined into one unit. The rolling sealing action of the unique FLEX rubber profile enables axial length changes to be accommodated out any movement on the surface of the pipe (no abrasion, no migration). Contraction Expansion Type of STRAUB coupling Max. admissible axial movement Dl [mm] [inch] FLEX 1 / REP FLEX 2 / REP FLEX 3 / REP E / Technical Manual 3/03 Page 70

22 Long pipe lines are subject to thermal movement due to influence of temperature. By using STRAUB couplings to join pipes, this movement can be taken up in the coupling, reducing or eliminating the need for expansion joints or bellows. Each length of pipe should have one anchoring point and one guiding point close to the coupling, thereby ensuring that any change in length in the section of pipe is transmitted into the relevant coupling. End load created by internal pressure can be accommodated at the end of the line by additional anchoring points. Sewage treatment plant Stuttgart Mühlhausen / Germany Air pressure line 80 C/176 F STRAUB-FLEX 2L mm/24 Connection and compensation of 6 mm/0.24 in each coupling STRAUB-FLEX / The length of each pipe and number of couplings to be installed depends upon the total change in length to be accommodated. The thrust forces generated by internal pressure can be calculated, and the fixed point adequately constructed by calculation. This calculation, and advice on the number of couplings required to accommodate thermal movement can be obtained by contacting the Applications Department at STRAUB. E / Technical Manual 3/03 Page 71

23 5.7 Axial misalignment Axial misalignment According to the DIN standard 2463 the permissible axial misalignment for STRAUB couplings amounts to 1 % of OD or a maximum of 3 mm. Axial misalignment can also be converted into an axial deflection or take the form of a cardan link incorporating two couplings. As described below, considerably greater axial misalignment can be bridged by using the appropriate installation procedure. Sewage treatment plant Mannheim 2000 A STRAUB-FLEX 2L 806 mm EPDM sleeve and stainless steel lock-parts was used to connect the main receiver to the basin wall feed-through. The thin walled pipe used (806 x 4 mm) and the long welded seam resulted in the pipe ends being badly deformed. The radial irregularity was as much as 32 mm in places. The permissible deviation according to DIN 2463, Part 1 is only 16 mm. Trying to overcome such irregularities through welding is a complex task, causes considerable heat problems, results in stresses and is aesthetically poor. 5.8 Resistance against bending and torsion STRAUB couplings are specifically designed for the absorption of bending and torsion through flexible yielding. This flexibility is also basis for good absorption properties. Please consult our application department. E / Technical Manual 3/03 Page 72

24 5.9 Special order couplings Electrical conductivity of STRAUB-FLEX/-REP STRAUB-FLEX / REP couplings do not provide electrical conductivity. Electrical conductivity can be ensured by the application of special electrical conductivity clips which have to be fitted into the coupling (Straub-option). Our Clip-system was proofed by the Swiss Electrotechnical Association (SEV) relevant clauses of EN Also in shipbuilding our electrical conductivity clips are approved. See for instance the American Bureau of Shipping (ABS) certificate No. 01-MF15543-X, date issued 3. of April STRAUB-Electrical conductivity clips are available starting from diameter 2.5 (73 mm). Thickness (a), wideness (b) and number of conductivity clips are depending on coupling diameter = Casing 2 = Conductivity clip 3 = Sealing sleeve 2 STRAUB-electrical conductivity clips instead of external cable connectors. STRAUB-FLEX / Waste water treatment plant Frankfurt-Sindlingen Electrical conductivity through external cable connector (made on site) STRAUB-FLEX 2LS used as main joint. Technical Manual 3/03 Page 73

25 5.9.2 Demagnetised couplings Test certificate WTD 71 / FGM confirms that the magnetic single measurement of pipe couplings yielded values in the permissible tolerance ( TESLA). Such couplings, which carry the mark Demagnetised, can be ordered from STRAUB Silicon-free couplings These couplings are fabricated in a special assembly area under extreme care and cleanliness conditions and are individually packaged. They are mostly used in the chemical and the automotive industry for spray-booth applications. Such couplings, which carry the mark Silicon-free, can be ordered from STRAUB. Technical Manual 3/03 Page 74