Page 13 - Straub-Couplings-Catalog-2017
P. 13

 STRAUB-FLEX-3.5
DV = Outside diameter of the 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
Non-Axial Restraint Pipe Couplings
• 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.
STRAUB-FLEX 4
DV = Outside diameter of the assembled pipe joint (mm) = OD + 48 mm
KV = OD + 90
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 = 200 mm
Rmax. without strip insert = 20 mm
Pipe
OD (mm)
323.9 355.6 406.4 457.2 508.0 558.8 609.6 655.0 711.2 762.0 812.8 914.4 1016.0 1117.6 1219.2 1422.4 1524.0 1625.0 1727.2 1828.8 1930.4 2032.0
Clamping range
(mm)
320 - 327 352 - 359 403 - 409 454 - 460 505 - 512 555 - 562 606 - 613 652 - 658 707 - 715 758 - 766 809 - 817 910 - 918 1012 - 1020 1113 - 1122 1215 - 1224 1418 - 1427 1519 - 1529 1621 - 1631 1722 - 1732 1824 - 1834 1925 - 1935 2027 - 2037
Working Pressure PS FLEX 3.5
Torque rate FLEX 3.5
Locking bolts FLEX 3.5
High-Performance Pipe Couplings
13
STRAUB-FLEX & STRAUB-OPEN-FLEX COUPLING
NEW PRODUCTS: CONSULT FACTORY FOR COUPLING & FITTING TOLERANCES
ONLY
Pipe
OD (mm)
323.9 609.6 762.0 1670.0
EPDM
Sealing sleeve
NBR
Medium: all qualities of water, waste water, air, soiids and chemical products Temp.: -4°F up to +180°F
Legend: Remarks:
- 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.
1"= 25.4mm
1 bar=14.7 psi
STRAUB-FLEX 3.5 & STRAUB-OPEN-FLEX 3.5 Selection Chart
For Both Components/Materials STRAUB-FLEX 3.5 & Casing
W1
AISI 1024, hot-dip galv. AISI 4135**
AISI 12L 14, galvanized AISI 316 L / HDPE
Temp.: -4° F up to +212°F
W5
AISI 316 Ti
AISI 316 L
AISI 316 L
AISI 316 L / HDPE
Screws STRAUB-FLEX 4 Bolts
Strip insert (option)
STRAUB-FLEX 3.5 Sealing sleeve
LU (bar)
18 17 15 13 12 11 10 9 9 8 8 7 6 6 5 4 4 4 3 3 3 2
H (bar)
25 25 22 21 20 19 17 16 15 14 13 12 11 10 9 8 7 7 6 6 5 5
LU (Nm)
30 30 30 30 30 40 40 40 40 40 40 50 50 60 60 70 80 80 90 90 100 100
H (Nm)
30 30 30 30 40 40 40 40 40 50 50 60 60 70 70 80 90 100 100 110 110 120
LU
4 x M16 with socket head 14 mms
8x M16 for 2 pcs. type
H
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) 3.5 LU:W5
3.5 H:W1
LU (bar)
18 10 8 4
H (bar)
25 14 11 5
LU (Nm)
30 40 40 80
H (Nm) LU
H
Medium: water, gas, oil, fuel and other hydrocarbons
STRAUB-FLEX 4 & STRAUB-OPEN-FLEX 4 Selection Chart
Clamping range
(mm)
320 - 327 606 - 613 758 - 766 1666 - 1674
Working Pressure PS FLEX 4
Torque rate FLEX 4
Locking bolts FLEX 4
Available for all pipe sizes from 323.9 mm up to 3000.0 mm (larger and smaller ø to special order)
60 60 80 100
12 x M20 with 12 x M20 with socket head socket head 17mms 17mm
   11   12   13   14   15