Page 11 - 2023 Straub Couplings

STRAUB-FLEX-3.5 STRAUB-OPEN-FLEX-3.5
STRAUB-FLEX 3.5 & 4, STRAUB-OPEN-FLEX 3.5 & 4 COUPLING
NEW PRODUCTS: CONSULT FACTORY FOR COUPLING & FITTING TOLERANCES
1"= 25.4mm
1 bar=14.7 psi
STRAUB-FLEX 3.5 & STRAUB-OPEN-FLEX 3.5 Selection Chart
Clamping Working Pressure PS Torque rate
Locking bolts FLEX 3.5
Pipe range
323.9 320 - 327 18
355.6 352 - 359 17
406.4 403 - 409 15
457.2 454 - 460 13
508.0 505 - 512 12
558.8 555 - 562 11
609.6 606 - 613 10
655.0 652 - 658 9
711.2 707 - 715 9
762.0 758 - 766 8
812.8 809 - 817 8
914.4 910 - 918 7
1016.0 1012 - 1020 6
1117.6 1113 - 1122 6
1219.2 1215 - 1224 5
1422.4 1418 - 1427 4
1524.0 1519 - 1529 4
1625.0 1621 - 1631 4
1727.2 1722 - 1732 3
1828.8 1824 - 1834 3
1930.4 1925 - 1935 3
2032.0 2027 - 2037 2
FLEX 3.5
FLEX 3.5
OD (mm)
(mm)
LU (bar)
H (bar)
LU (Nm)
H (Nm)
LU
H
Non-Axial-Restraint Pipe Coupling
For IPS Outside Diameter Pipe
DV = Outside diameter of assembled pipe joint (mm) = OD + 38mm
B = Width of the pipe joint (mm) FLEX 3.5LU = 310mm FLEX 3.5H = 311mm
C = Distance between sealing lips = 227mm Rmax. =Distance between pipe ends Rmax. with strip insert = 120mm
Rmax. without strip insert = 20mm
• Pipes must be properly anchored and supported.
• STRAUB-FLEX 3.5 & STRAUB-FLEX 4 Couplings are NOT pull-out resistant.
• STRAUB-STRONG Special Restraint System. (Info and pricing available on request.)
Other sizes available upon request.
25 30
25 30
22 30
21 30
20 30
19 40
17 40
16 40
15 40
14 40
13 40
12 50
11 50
10 60
9 60
8 70
7 80
7 80
6 90
6 90
5 100
5 100
30
30
30
30
40
40
40
40
40
50
50
60
60
70
70
80
90
100
100
110
110
120
4 x M16 with socket head 14 mms
8x M16 for 2 pcs. type
4 x M16 with socket head 14 mm
8x M16 for 2 pcs. type
Available for all pipe sizes from 558.8 mm up to 3000.0 mm (larger and smaller ø to special order)
For Both STRAUB-FLEX 3.5 & STRAUB-FLEX 4
STRAUB-FLEX 3.5 ONLY
Components/Materials Casing
Screws
Bolts
Strip insert (option)
Sealing sleeve EPDM Sealing sleeve NBR
W5 (3.5 LU:W5) AISI 316 Ti
AISI 316 L
AISI 316 L
W1 (3.5 H:W1)
AISI 1024, hot-dip galv.
AISI 4135**
AISI 12L 14, galvanized
AISI 316 L / HDPE
Temp.: -4° F up to +212°F
Medium: all water quality, waste water, air, solids and chemical products Temp.: -4°F up to +180°F
Medium: water, gas, oil, fuel and other hydrocarbons
OD
R C
B DV
STRAUB-FLEX-3.5 STRAUB-OPEN-FLEX-3.5
AISI 316 L / HDPE
Pipe
OD (mm)
323.9
609.6
762.0
1670.0
Legend: Remarks:
Clamping range
(mm)
320 - 327
606 - 613
758 - 766
1666 - 1674
Working Pressure PS FLEX 4
Torque rate FLEX 4
Locking bolts FLEX 4
STRAUB-FLEX 4 & STRAUB-OPEN-FLEX 4 Selection Chart
LU (bar)
18
10
8
4
H (bar)
25
14
11
5
LU (Nm)
30
40
40
80
H (Nm)
60
60
80
100
LU
12 x M20 with socket head 17mms
H
12 x M20 with socket head 17mm
DV = Outside diameter of the assembled pipe joint (mm) = OD + 48 mm
B = Width of the pipe joint (mm)
FLEX 4LU = 444 mm
FLEX 4H = 445 mm
C = Distance between sealing lips = 350 mm Rmax. =Distance between pipe ends
Rmax. with strip insert = 200mm Rmax. without strip insert = 20mm
Available for all pipe sizes from 323.9 mm up to 3000.0 mm (larger and smaller ø to special order)
- W1 - W5 according to DIN Standard 86128 (ASTM F 1476 / F1548, ISO/NP-15837 / 15838). ** Property class 12.9, Dacromet 500 (zinc-chromate with integrated lubricant).
- Available in 2 pc. only
- Follow fitting / disassembly instructions.
- Test pressure = 1,5 x working pressure
- Admissible maximum axial movement of the pipes Dl : 20 mm.
- Strip insert are required when the gap between the pipe ends is excessive, in presence of
swelling, at vacuum/depression (suction line), or external pressure. Strip inserts are available, under separate order, at additional costs.
All STRAUB couplings require correct use of a torque wrench for safe and proper installation. STRAUB couplings must be torqued to the specified value printed on each individual coupling. Failure to do so can result in injury or death.
WARNING: Cancer and Reproductive Harm Warning. For more information go to http://www.P65Warnings.ca.gov.
High-Performance Pipe Couplings 11