7707N |
MODEL 7707N HEAVY DUTY FLEXIBLE COUPLING
The Model 7707N Heavy Duty Flexible Coupling is designed for use in a variety of general piping applications of moderate or high pressure services. The Model 7707N couplings feature flexibility that can deal with misalignment, distortion, thermal stress, vibration and noise and also resist seismic tremors. With the use of Model 7707N couplings you can even design a curved layout. See Typical application – Flexible Couplings on Shurjoint Data Sheet
The Model 7707N couplings sizes 14” – 26” (350 mm – 650 mm) are com- prised of two identical ductile iron housing segments, an EPDM rubber gasket and one or two bolts at each segment joint to ensure a positive connection and seal.
7707N couplings should always be installed so that the coupling bolt pads make metal to metal contact.
Size: 26”
Size: 14”~24”
Full warranty terms can be found on www.shurjoint.com
Model 7707N Heavy Duty Flexible Coupling
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Angular |
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Max. |
ASME/ANSI |
Max. |
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Movement**† |
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Working |
End |
Axial |
Degree |
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Pressure Class |
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Dimensions |
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Bolt |
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Nominal |
Pipe |
Pressure |
Load |
Displace- |
Per |
Per |
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Rating^ |
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A |
B |
C |
No |
Size |
Weight |
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Size |
O.D. |
(CWP)* |
@100oF/@38oC |
(CWP) |
ment † |
Coupling |
Pipe |
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in |
in |
PSI |
PSI |
Lbs |
in |
(o) |
in / ft |
in |
in |
in |
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in |
Lbs |
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mm |
mm |
Bar |
Nom. Class |
kN |
mm |
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mm / m |
mm |
mm |
mm |
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Kgs |
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14 |
14.00 |
300 |
300 |
46150 |
0.125 |
0o – 31’ |
0.06 |
16.23 |
18.85 |
2.95 |
2 |
⅞ x6½ |
34.5 |
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350 |
355.6 |
20 |
150 |
198.53 |
3.2 |
4.5 |
412.0 |
479.0 |
75.0 |
15.7 |
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16 |
16.00 |
300 |
300 |
60280 |
0.125 |
0o – 27’ |
0.05 |
18.23 |
21.53 |
2.95 |
2 |
1 x 6½ |
37.0 |
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400 |
406.4 |
20 |
150 |
259.30 |
3.2 |
4.0 |
463.0 |
547.0 |
75.0 |
16.8 |
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18 |
18.00 |
300 |
300 |
76300 |
0.125 |
0o – 24’ |
0.04 |
20.45 |
23.81 |
3.11 |
2 |
1 x 6½ |
47.1 |
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450 |
457.2 |
20 |
150 |
327.89 |
3.2 |
3.5 |
520.0 |
605.0 |
79.0 |
22.3 |
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20 |
20.00 |
300 |
300 |
94200 |
0.125 |
0o – 22’ |
0.04 |
22.48 |
25.82 |
3.11 |
2 |
1 x 6½ |
54.4 |
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500 |
508.0 |
20 |
150 |
405.16 |
3.2 |
3.0 |
571.0 |
656.0 |
79.0 |
24.7 |
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22 |
22.00 |
300 |
300 |
113980 |
0.125 |
0o – 19’ |
0.04 |
24.46 |
28.52 |
3.11 |
2 |
1⅛ x6½ |
63.0 |
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550 |
558.8 |
20 |
150 |
490.60 |
3.2 |
3.0 |
621.4 |
724.6 |
79.0 |
28.6 |
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24 |
24.00 |
300 |
300 |
135640 |
0.125 |
0o – 18’ |
0.03 |
26.55 |
30.70 |
3.11 |
2 |
1⅛ x6½ |
65.1 |
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600 |
609.6 |
20 |
150 |
584.20 |
3.2 |
2.5 |
674.0 |
780.0 |
79.0 |
29.5 |
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26 |
26.00 |
300 |
300 |
159190 |
0.125 |
0o – 17’ |
0.03 |
29.68 |
33.15 |
4.94 |
4 |
⅞ x9⅝ |
143.0 |
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650 |
660.4 |
20 |
150 |
684.72 |
3.2 |
2.5 |
754.0 |
842.0 |
125.6 |
65.0 |
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* Working pressure is based on
^ The ASME/ANSI pressure class rating is not the design or maximum pressure rating, rather is provided for those that are accustomed to specifying or using ASME/ANSI pressure class rated components such as flange, valves, etc.
† Allowable Axial Displacement and Angular Movement (deflection) figures are for roll grooved standard steel pipe. Values for cut grooved pipe will be double that of roll grooved. These values are maximums; for design and installation purposes these figures should be reduced by: 50% for ¾” – 3½”; 25% for 4” and larger to compensate for jobsite conditions.
** Deflection or angular movement is the maximum value that a coupling allows under no internal pressure.
7707N |
Performance Data
The following tables show the maximum working pressures (CWP) of Shurjoint Model 7707N Heavy Duty Flexible Coupling used on
Model 7707N on Carbon Steel Pipe
Nom. Size |
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in / mm |
XS (0.500”)* |
STD (0.375”) |
LW (0.312”) |
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PSI / Bar |
PSI / Bar |
PSI / Bar |
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14 |
300 |
300 |
250 |
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350 |
20 |
20 |
17 |
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16 |
300 |
300 |
250 |
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400 |
20 |
20 |
17 |
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18 |
300 |
300 |
250 |
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450 |
20 |
20 |
17 |
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20 |
300 |
300 |
250 |
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500 |
20 |
20 |
17 |
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22 |
300 |
300 |
250 |
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550 |
20 |
20 |
17 |
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24 |
300 |
300 |
250 |
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600 |
20 |
20 |
17 |
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26 |
300 |
300 |
250 |
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650 |
20 |
20 |
17 |
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Note: * Pressure ratings are based on
MATERIAL SPECIFICATIONS
• Housing:
Ductile Iron to ASTM A536, Gr.
• Surface Finish:
Standard painted finishes in orange or RAL3000 red.
Hot dip zinc galvanized (Option).
Tailored epoxy coatings including 3M Scotchkote #134 for waste water, hydrocarbons, harsh chemicals and sea water services, Drynamels #4900 for exterior (outdoor) architectural applications and others (Option).
For additional details contact Shurjoint.
• Rubber Gasket:
Grade “E” EPDM (Color code: Green stripe) Good for cold & hot water up to +230oF (+110oC). Also good for services for water with acid, water with chlorine, deionized water, seawater and waste water, dilute acids,
Not recommended for petroleum oils, minerals oils, solvents and aromatic hydrocarbons.
Maximum Temperature Range:
*EPDM gaskets for water services are not recommended for steam services unless couplings or components are accessible for frequent gasket replacement.
(Option) Grade “T” Nitrile (Color code: Orange stripe) Recommended for petroleum products, air with oil vapors, vegetable and mineral oils within the specified temperature range. Also good for water services under +150oF (+66oC).
Temperature range:
Do not use for HOT WATER above +150 oF (+66 oC) or HOT DRY AIR above +140 oF (+60 oC)
Other options: Grade “O” - Fluoroelastomer.
Grade “L” - Silicone.
For additional details contact Shurjoint.
• Bolts & Nuts:
Heat treated carbon manganese steel track bolts to ASTM
Type 304 or 316 track bolts with heavy duty nuts (Option)
7707N |
General Notes:
ASME/ANSI
Maximum Working Pressure (CWP) listed is the maximum cold water pressure for general piping services tested to ASTM F1476 and or AWWA C606 methods. Figures listed are based on roll- or
Max. End Load is calculated based on the maximum working pressure (CWP).
Field Joint Test: For one time only the system may be tested hydrostatically at 1½ times the maximum working pressure listed (AWWA C606 5.2.3).
Warning: Piping systems must always be depressurized and drained before attempting disassembly and or removal of any components.
The 10 Year Limited Warranty applies to manufacturing defects only and does not cover severe service/temperature applications or wear parts.
Shurjoint reserves the right to change specifications, designs and or standard without notice and without incurring any obligations.
Job Name: |
System No. |
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Contractor: |
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Approved: |
Date: |
Engineer: |
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Approved: |
Date: |
Shurjoint product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Shurjoint Technical Service. Shurjoint reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligations to make such changes and modifications on Shurjoint products previously subsequently sold.
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