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7706

C-07

MODEL 7706 REDUCING COUPLING

The Model 7706 Reducing Coupling allows direct reduction on a piping run and eliminates the need for a concentric reducer and couplings. The specially designed rubber gasket prevents the smaller pipe from telescoping into the larger pipe during vertical installation. All 7706 couplings are comprised of two identical housing segments, EPDM rubber gasket and plated track bolts and nuts. Housing segments are supplied with our standard painted finishes, i.e. orange or RAL3000 red. Optional finishes such as hot dipped zinc galvanized and custom epoxy coatings are available.

7706 couplings should always be installed so that the coupling bolt pads make metal to metal contact.

The Model 7706 couplings must not be used with an end cap, as the end cap could be sucked into the pipe by the vacuum created when a system is being drained.

For Fire Protection pressure rating, listing, and approval information, refer to Data Sheet B-42 or visit SHURJOINT website, www.shurjoint.com for details or contact your SHURJOINT Representative.

Full warranty terms can be found on www.shurjoint.com

 

 

 

Model

7706 Reducing Coupling

 

 

 

 

 

 

 

Max.

ASME/ANSI

Max.

 

Angular Movement **†

 

 

 

 

 

 

 

 

Deg.

 

 

 

 

 

 

 

 

Working

Pressure Class

End

Axial

Per

 

Pipe

 

 

 

 

Pipe

Pressure

Rating^

Load

Displace-

Per

Pipe

 

 

Bolt

 

Nominal Size

O.D.

(CWP)*

@100oF/@38oC

(CWP)

ment †

Coupling

A

B

C

Size

Weight

in

in

PSI

PSI

Lbs

in

(o)

in/ft

in

in

in

in

Lbs

mm

mm

Bar

Nom. Class

kN

mm

 

mm/m

mm

mm

mm

mm

Kgs

1½ x 1¼

1.900 x 1.660

500

300

1410

0 ~ 0.065

1o - 54’

0.20

2.83

4.25

1.81

⅜ x 2⅛

1.8

40 x 32

48.3 x 42.2

35

150

6.23

0 ~ 1.6

17

72

108

46

M10 x 55

0.8

 

2 x 1½

2.375 x 1.900

500

300

2210

0 ~ 0.065

1o - 31’

0.16

3.35

4.80

1.89

⅜ x 2⅛

2.0

50 x 40

60.3 x 48.3

35

150

9.70

0 ~ 1.6

13

85

122

48

M10 x 55

0.9

 

2½ x 2

2.875 x 2.375

500

300

3240

0 ~ 0.065

1o - 15’

0.13

3.78

5.67

1.89

⅜ x 2⅛

2.6

65 x 50

73.0 x 60.3

35

150

14.22

0 ~ 1.6

11

96

144

48

M10 x 55

1.2

 

76.1 mm x 50

3.000 x 2.375

500

300

3530

0 ~ 0.065

1o - 12’

0.13

4.02

5.43

1.89

⅜ x 2⅛

2.6

76.1 x 60.3

35

150

15.46

0 ~ 1.6

11

102

138

48

M10 x 55

1.2

 

 

3 x 2

3.500 x 2.375

500

300

4800

0 ~ 0.065

1o - 02’

0.11

4.57

6.61

1.89

½ x 3

3.3

80 x 50

88.9 x 60.3

35

150

21.09

0 ~ 1.6

9

116

168

48

M12 x 75

1.5

 

3 x 2½

3.500 x 2.875

500

300

4800

0 ~ 0.065

1o - 02’

0.11

4.57

6.61

1.89

½ x 3

3.7

80 x 65

88.9 x 73.0

35

150

21.09

0 ~ 1.6

9

116

168

48

M12 x 75

1.7

 

80 x 76.1 mm

3.500 x 3.000

500

300

4800

0 ~ 0.065

1o - 02’

0.11

4.57

6.61

1.89

½ x 3

3.7

88.9 x 76.1

35

150

21.09

0 ~ 1.6

9

116

168

48

M12 x 75

1.7

 

 

4 x 2

4.500 x 2.375

500

300

7940

0 ~ 0.095

1o - 12’

0.13

5.75

7.80

2.05

½ x 3

5.3

100 x 50

114.3 x 60.3

35

150

34.87

0 ~ 2.4

11

146

198

52

M12 x 75

2.4

 

4 x 2½

4.500 x 2.875

500

300

7940

0 ~ 0.095

1o - 12’

0.13

5.75

7.80

2.05

½ x 3

5.7

100 x 65

114.3 x 73.0

35

150

34.87

0 ~ 2.4

11

146

198

52

M12 x 75

2.6

 

100 x 76.1 mm

4.500 x 3.000

500

300

7940

0 ~ 0.095

1o - 12’

0.13

5.75

7.80

2.05

½ x 3

5.7

114.3 x 76.1

35

150

34.87

0 ~ 2.4

11

146

198

52

M12 x 75

2.6

 

 

4 x 3

4.500 x 3.500

500

300

7940

0 ~ 0.095

1o - 12’

0.13

5.75

7.80

2.05

½ x 3

5.3

100 x 80

114.3 x 88.9

35

150

34.87

0 ~ 2.4

11

146

198

52

M12 x 75

2.4

 

139.7 mm x 100

5.500 x 4.500

400

300

9490

0 ~ 0.125

1o - 18’

0.14

6.30

9.84

2.05

⅝ x 3½

8.4

139.7 x 114.3

28

150

42.90

0 ~ 3.2

12

160

242

52

M16 x 90

3.8

 

 

5 x 4

5.563 x 4.500

400

300

9710

0 ~ 0.125

1o - 18’

0.14

6.30

9.84

2.05

⅝ x 3½

7.9

125 x 100

141.3 x 114.3

28

150

43.88

0 ~ 3.2

12

160

242

52

M16 x 90

3.6

 

C-07-1/5 Rev.L 20130523

 

 

 

 

 

 

7706

 

 

 

 

 

C-07

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

7706 Reducing Coupling

 

 

 

 

 

 

 

 

 

 

 

Max.

ASME/ANSI

Max.

 

 

Angular Movement **†

 

 

 

 

 

 

 

 

 

 

 

 

 

Deg.

 

 

 

 

 

 

 

 

 

 

 

 

Working

Pressure Class

End

Axial

Per

 

Pipe

 

 

 

 

 

 

 

 

Pipe

Pressure

Rating^

Load

Displace-

Per

Pipe

 

 

 

Bolt

 

 

 

 

Nominal Size

O.D.

(CWP)*

@100oF/@38oC

(CWP)

ment †

Coupling

A

B

C

 

Size

Weight

 

 

 

in

in

PSI

PSI

Lbs

in

(o)

in/ft

in

in

in

 

in

Lbs

 

 

 

mm

mm

Bar

Nom. Class

kN

mm

 

mm/m

mm

mm

mm

 

mm

Kgs

 

 

 

165.1 mm x 80

6.500 x 3.500

400

300

13260

0 ~ 0.125

 

1o - 07’

0.12

7.95

10.59

2.05

 

⅝ x 3½

10.1

 

 

 

165.1 x 88.9

28

150

59.91

0 ~ 3.2

 

10

202

269

52

 

M16 x 90

4.6

 

 

 

 

 

 

 

 

 

 

6 x 3

6.625 x 3.500

400

300

13780

0 ~ 0.125

 

1o - 06’

0.12

8.19

10.83

2.05

 

⅝ x 3½

10.1

 

 

 

150 x 80

168.3 x 88.9

28

150

62.26

0 ~ 3.2

 

10

208

275

52

 

M16 x 90

4.6

 

 

 

 

 

 

 

 

 

165.1 mm x 100

6.500 x 4.500

400

300

13260

0 ~ 0.125

 

1o - 07’

0.12

7.95

10.59

2.05

 

⅝ x 3½

9.9

 

 

 

165.1 x 114.3

28

150

59.91

0 ~ 3.2

 

10

202

269

52

 

M16 x 90

4.5

 

 

 

 

 

 

 

 

 

 

6 x 4

6.625 x 4.500

400

300

13780

0 ~ 0.125

 

1o - 06’

0.12

8.19

10.83

2.05

 

⅝ x 3½

9.9

 

 

 

150 x 100

168.3 x114.3

28

150

62.26

0 ~ 3.2

 

10

208

275

52

 

M16 x 90

4.5

 

 

 

 

 

 

 

 

 

8 x 6

8.625 x 6.625

400

300

23350

0 ~ 0.125

 

0o - 50’

0.09

10.24

13.15

2.24

 

¾ x 4¾

14.3

 

 

 

200 x 150

219.1 x 168.3

28

150

105.51

0 ~ 3.2

 

8

260

334

57

 

M20 x 120

6.5

 

 

 

 

 

 

 

 

 

200 x 165.1 mm

8.625 x 6.500

400

300

23350

0 ~ 0.125

 

0o - 50’

0.09

10.24

13.15

2.24

 

¾ x 4¾

14.3

 

 

 

219.1 x 165.1

28

150

105.51

0 ~ 3.2

 

8

260

334

57

 

M20 x 120

6.5

 

 

* Working Pressure is based on roll- or cut-grooved standard wall carbon steel pipe.

^ 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.

MODEL 7706-T TRANSITION COUPLING

The Model 7706-T Transition Coupling allows for a direction transition from IPS pipe sizes to ISO pipe sizes.

Model 7706-T Transition Coupling

 

 

Max.

ASME/ANSI

 

 

Angular Movement**†

 

Pipe

 

 

 

 

 

Working

Pressure Class

Max.

Axial

Deg.

 

 

 

 

 

 

 

Pipe

Pressure

Rating^

End

Displace-

Per

Per

 

 

 

Bolt

 

Nominal Size

O.D.

(CWP)*

@100oF/@38oC

Load

ment †

Coupling

Pipe

A

B

C

Size

Weight

in

in

PSI

PSI

Lbs

in

(o)

in/ft

 

 

 

in

Lbs

mm

mm

Bar

Nom. Class

kN

mm

 

mm/m

mm

mm

mm

mm

Kgs

2½ x 76.1mm

2.875 x 3.000

500

300

2110

0 ~ 0.065

1o - 12’

0.13

4.02

5.43

1.89

⅜ x 2⅛

2.6

73.0 x 76.1

35

150

9.09

0 ~ 1.6

11

102

138

48

M10 x 55

1.2

 

 

6 x 165.1mm

6.625 x 6.500

400

300

9940

0 ~ 0.125

0o - 33’

0.12

7.87

10.63

2.09

⅝ x 3½

7.7

168.3 x 165.1

28

150

42.80

0 ~ 3.2

10

200

270

53

M16 x 90

3.5

 

 

*Working Pressure is based on roll grooved standard wall carbon steel pipe.

^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.

C-07-2/5 Rev.L 20130523

7706

C-07

Performance Data

The following tables show the maximum working pressures (CWP) of Shurjoint Model 7706 Reducing Coupling used on both carbon steel and stainless steel pipes. Shurjoint ductile iron couplings can be used in conjunction with stainless steel pipe in non-corrosive environment as the flow media does not come in direct contact with the coupling housings but rather only the gasket.

Unit: psi / Bar

Model 7706 on Carbon Steel Pipe

Nom. Size

Cut-Grooved

Roll-Grooved

in / mm

XS

STD

STD

Sch. 10

Sch. 7

1½ x 1¼

500

500

500

350

300

40 x 32

35

35

35

24

20

2 x 1½

500

500

500

350

300

50 x 40

35

35

35

24

20

2½ x 2

500

500

500

350

300

65 x 50

35

35

35

24

20

2½ x 2

500

500

500

350

300

65 x 50

35

35

35

24

20

3 x 2

500

500

500

350

300

80 x 50

35

35

35

24

20

3 x 2½

500

500

500

350

300

80 x 65

35

35

35

24

20

4 x 2

500

500

500

350

300

100 x 50

35

35

35

24

20

4 x 2 ½

500

500

500

350

300

100 x 65

35

35

35

24

20

4 x 2 ½

500

500

500

350

300

100 x 65

35

35

35

24

20

4 x 3

500

500

500

300

250

100 x 80

35

35

35

20

17

5 x 4

400

400

400

300

250

125 x 100

28

28

28

20

17

5 x 4

400

400

400

300

250

125 x 100

28

28

28

20

17

6 x 3

400

400

400

300

200

150 x 80

28

28

28

20

14

6 x 3

400

400

400

300

200

150 x 80

28

28

28

20

14

6 x 4

400

400

400

300

175

150 x 100

28

28

28

20

12

6 x 4

400

400

400

300

175

150 x 100

28

28

28

20

12

8 x 6

400

400

400

300

175

200 x 150

28

28

28

20

12

8 x 6

400

400

400

300

175

200 x 150

28

28

28

20

12

Unit: psi / Bar

Model 7706 on Stainless Steel Pipe

 

Nom. Size

Cut-Grooved

Roll-Grooved

 

 

in / mm

Sch. 80S

Sch. 40S

Sch. 40S

Sch. 10S

 

Sch. 5S

 

1½ x 1¼

500

500

350

300

 

250

 

40 x 32

35

35

24

20

 

17

 

2 x 1½

500

500

350

300

 

250

 

50 x 40

35

35

24

20

 

17

 

2½ x 2

500

500

350

300

 

250

 

65 x 50

35

35

24

20

 

17

 

2½ x 2

500

500

350

300

 

250

 

65 x 50

35

35

24

20

 

17

 

3 x 2

500

500

350

300

 

250

 

80 x 50

35

35

24

20

 

17

 

3 x 2½

500

500

350

300

 

250

 

80 x 65

35

35

24

20

 

17

 

4 x 2

500

500

350

300

 

250

 

100 x 50

35

35

24

20

 

17

 

4 x 2 ½

500

500

350

300

 

200

 

100 x 65

35

35

24

20

 

14

 

4 x 2 ½

500

500

350

300

 

200

 

100 x 65

35

35

24

20

 

14

 

4 x 3

500

500

300

250

 

200

 

100 x 80

35

35

20

17

 

14

 

5 x 4

400

400

300

250

 

NR

 

125 x 100

28

28

20

17

 

 

 

 

 

5 x 4

400

400

300

250

 

NR

 

125 x 100

28

28

20

17

 

 

 

 

 

6 x 3

400

400

300

200

 

NR

 

150 x 80

28

28

20

14

 

 

 

 

 

6 x 3

400

400

300

200

 

NR

 

150 x 80

28

28

20

14

 

 

 

 

 

6 x 4

400

400

300

175

 

NR

 

150 x 100

28

28

20

12

 

 

 

 

 

6 x 4

400

400

300

175

 

NR

 

150 x 100

28

28

20

12

 

 

 

 

 

8 x 6

400

400

300

175

 

NR

 

200 x 150

28

28

20

12

 

 

 

 

 

8 x 6

400

400

300

175

 

NR

 

200 x 150

28

28

20

12

 

 

 

 

Flow Data

Equivalent Length of Sch. 40 steel pipe for water at 60oF (16oC)

The pressure drop or head loss across Model 7706 Reducing Coupling is small and less than that of the same size of concentric reducer. Equivalent lengths of sch. 40 steel pipe (new pipe) for water 60oF (16oC) are shown in the table.

Model 7706 Reducing Coupling

Size

Equivalent Length

Size

Equivalent Length

in

feet

in

feet

mm

m

mm

m

1½ x 1¼

1.6

4 x 2½

4.9

40 x 32

0.5

100 x 65

1.5

2 x 1

3.9

4 x 3

3.6

50 x 25

1.2

100 x 80

1.1

2 x 1½

2.0

5 x 4

3.0

50 x 40

0.6

125 x 100

0.9

2½ x 2

2.0

6 x 3

7.9

65 x 50

0.6

150 x 80

2.4

3 x 2

3.9

6 x 4

5.9

80 x 50

1.2

150 x100

1.8

3 x 2½

2.3

6 x 5

4.5

80 x 65

0.7

150 x 125

1.37

4 x 2

6.2

8 x 6

7.2

100 x 50

1.9

200 x 150

2.2

C-07-3/5 Rev.L 20130523

MATERIAL SPECIFICATIONS

Housing:

Ductile Iron to ASTM A536, Gr. 65-45-12 and or ASTM A395, Gr. 65-45-15, min. tensile strength 65,000 psi (448 MPa).

• Surface Finish:

Standard painted finishes in orange or RAL3000 red.

Hot dip zinc galvanized (Option)

Epoxy Coatings in RAL3000 red or other colors (Option)

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, oil-free air and many chemicals.

Not recommended for petroleum oils, minerals oils, solvents and aromatic hydrocarbons.

Maximum Temperature Range: -30oF (-34oC) to +230oF (+110oC)*.

*EPDM gaskets for water services are not recommended for steam services unless couplings or components are accessible

7706

C-07

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: -20 oF to +180 oF (-29 oC to +82 oC).

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 A449-83a (or A183 Gr. 2), minimum tensile strength 110,000 psi (758 MPa), Zinc electroplated, with heavy-duty hexagonal nuts to ASTM A563.

LISTINGS/APPROVALS

The information provided below is based on the latest listing and approval data at the time of publication. Listings/Approvals are subject to change and/or additions by the approvals agencies. Contact Shurjoint for the performance on other pipes and the latest listings and approvals

 

Standard Pipe

 

 

 

Specialty Pipe

 

Nom.

 

 

 

cULus / FM

VdS

LPCB

cULus

FM

 

Size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

in

 

 

 

Sch. 10

 

Sch. 40

 

 

BS1387(M)

 

mm

 

PSI/Bar

 

PSI/Bar

Bar

PSI/Bar

PSI/Bar

PSI/Bar

2×1½

 

 

300

 

300

16

300

N/A

300

 

50 x

40

 

 

20

 

20

20

20

 

 

 

 

 

 

2½×2

 

 

300

 

300

N/A

N/A

N/A

300

 

65 x

50

 

 

20

 

20

20

 

 

 

 

 

 

 

 

76.1 mm×2

 

300

 

300

16

300

300

300

 

65 x

50

 

 

20

 

20

20

20

20

 

 

 

 

 

 

76.1 mm×3

 

N/A

 

N/A

N/A

N/A

300

N/A

 

65 x

80

 

 

 

20

 

 

 

 

 

 

 

 

 

3×2

 

 

300

 

300

16

300

300

300

 

80 x

50

 

 

20

 

20

20

20

20

 

 

 

 

 

3×2½

 

 

300

 

300

N/A

N/A

300

300

 

80 x

65

 

 

20

 

20

20

20

 

 

 

 

 

 

 

3×76.1 mm

 

N/A

 

300

16

300

N/A

300

 

80 x

65

 

 

 

20

20

20

 

 

 

 

 

 

 

4×2

 

 

300

 

300

16

300

N/A

300

 

100 x 50

 

20

 

20

20

20

 

 

 

 

 

4×2½

 

 

300

 

300

N/A

N/A

300

300

 

100 x 65

 

20

 

20

20

20

 

 

 

 

 

 

4x76.1 mm

 

300

 

300

16

300

N/A

300

 

100 x 65

 

20

 

20

20

20

 

 

 

 

 

 

4x3

 

300

 

300

16

300

300

300

 

100 x 80

 

20

 

20

20

20

20

 

 

 

 

5×4

 

 

N/A

 

300

N/A

N/A

N/A

300

 

125 x

100

 

 

 

20

20

 

 

 

 

 

 

 

 

 

139.7 mm×4

 

N/A

 

300

N/A

N/A

N/A

300

 

125 x

100

 

 

 

20

20

 

 

 

 

 

 

 

 

 

165.1 mm×3

 

N/A

 

300

N/A

N/A

N/A

300

 

150 x 80

 

 

20

20

 

 

 

 

 

 

 

 

6x3

 

300

 

300

N/A

N/A

N/A

300

 

150 x 80

 

20

 

20

20

 

 

 

 

 

 

 

165.1 mm×4

 

300

 

300

N/A

300

300

300

 

150 x

100

 

 

20

 

20

20

20

20

 

 

 

 

 

 

6x4

 

300

 

300

N/A

N/A

N/A

300

 

150 x

100

 

 

20

 

20

20

 

 

 

 

 

 

 

 

8×165.1 mm

 

N/A

 

300

N/A

300

N/A

300

 

200 x

150

 

 

 

20

20

20

 

 

 

 

 

 

 

 

8x6

 

300

 

300

N/A

N/A

N/A

300

 

200 x

150

 

 

20

 

20

20

 

 

 

 

 

 

 

C-07-4/5

Rev.L

20130523

 

 

 

 

 

7706

C-07

General Notes:

ASME/ANSI Pressure-Temperature Rating is provided as an aid in selecting a proper coupling to incorporate with other piping components (valves, flanges, and etc.) that are used in the same system and carry the ASME/ANSI rating. Select a Class 150 coupling to incorporate with Class 150 valves and flanges.

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 cut-grooved standard wall carbon steel pipe. For other pipe schedules or pipe materials, contact Shurjoint for additional information.

Max. End Load is calculated based on the maximum working pressure (CWP).

Listed and or Approved Pressures are pressure ratings for fire protection systems, tested and approved by various approval bodies. Please always refer to the latest approval data posted on the Shurjoint website.

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.

 

Location:

Contractor:

 

Approved:

Date:

Engineer:

 

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.

C-07-5/5 Rev.L 20130523

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