521-529 Series

521-529 Series

Mueller® 520 and 530 series Full-Seal Pipe Repair Clamps provide ecomomical repairs and resist corrosion.

MUELLER "all stainless steel" Full-Seal Pipe Repair Clamps provide an economical repair for circumferential breaks or cracks, multiple leaks or holes in pipe. They are available in standard lengths for cast iron and steel pipe, and with "add- on"etc. Each clamp size can accommodate a wide range of O.D. variations.

Lightweight all stainless steel clamps resist corrosive atmo- spheres and hot soils. Available in single-section Full-Seal® style (Series 520), in two-section Xtra-Range® style (Series 530), and in Servi-Seal® style with welded-in service outlet. Servi-Seal style is available in either single-section (Styles 521-529) or two-section (Styles 531- 539).

Features:

  • MAXIMUM GAS WORKING PRESSURE – for properly in- stalled clamps at 150F. maximum working temperature: 2"-8" 100 psig (689 kPa), 10"-12" cast iron pipe 60 psig, 10"-12" steel pipe 100 psig (689 kPa).
  • 304L STAINLESS STEEL "GAP BRIDGES" – molded into gasket where the band sections join and add support to provide 360° clamping pressure. Lightweight all stainless steel clamps resist corrosive atmo- spheres and hot soils. Available in single-section Full-Seal® style (Series 520), in two-section Xtra-Range® style (Series 530), and in Servi-Seal® style with welded-in service outlet. Servi-Seal style is available in either single-section (Styles 521-529) or two-section (Styles 531- 539).
  • TAPERED END GRIDDED GASKET – made of specially compounded nitrile rubber has gridded pattern for positive sealing and tapered ends to make installation quick and easy.
  • BANDS – made of type 304L stainless steel, and are machine-welded and fully passivated.
  • UNIQUE LOW-PROFILE DESIGN – of the bolting mechanism makes clamp easy to handle and easy to fit around pipe.
  • HIGH STRENGTH STAINLESS STEEL BOLTS – have spin-fit threads, treated with an anti-galling agent for fast installation – plus special T-heads so they drop into bolt bar slots easily yet do not turn during tightening.
  • STAINLESS STEEL BOLTING MECHANISM – is pre-assembled. Unique weight-saving Mueller design features lug and bolt bars which rotate as the clamp is tightened. This avoids bolt bending or binding, keeps tightening force close to the pipe surface and allows more efficient transfer of tightening force on the bolts to clamping force on the pipe.

_
Catalog PDF

 

IMPORTANT: MUELLER PIPE REPAIR CLAMPS have demonstrated their capability to seal against gas pressures commonly encountered in distribution systems. Smaller diameter clamps of a given design can seal against higher pressures than larger ones. In addition, the pressure that a clamp can contain is effected by the torque applied to the bolts, the uniformity of the bolt tightening (where there is more than one bolt) as well as the type of extent of pipe damage, surface condition of the pipe, environmental conditions and installation workmanship.
Metallic components of repair clamps, including stainless steel, corrode at widely variable rates depending upon many factors, such as installation outdoors or underground, composition of surrounding atmosphere/soil, presence of stray currents, moisture or chemicals, etc. Consequently, repair clamps must be assumed to have a finite service life. Consult with a corrosion professional to determine the life expectancy of this repair clamp taking into consideration all appropriate factors in the application. The piping system designer should determine the suitability of this type product on your particular system. Unforeseen failure of this product could result if these precautions are not taken. Mueller Co. can provide additional material specification information on request by contacting Customer Service: 800-798-3131.

 

Mueller 521 - 529 Single Section Servi-Seal Stainless Steel Pipe Repair Clamps - with integral 3/4" though 2" IP threaded service outlet-for 2" through 12" cast iron and steel pipe.

To specify the catalog number, provide the following information:

1. Style number – see chart below
2. Length – standard lengths can be found on the OD chart on the following page
3. Size number – refer to the OD chart on the following page after verifying pipe OD
4. Catalog number prefix for optional features, if desired

The catalog number for a Single Section Servi-Seal Repair Clamp with 3/4" IP outlet, 12" clamp length for 8" cast iron pipe is 521-12-0899.

Clamp Style Number:

Style Number

Size and Type of Outlet Tapping Thread

O.D. Ranges Available*

521

3/4" IP

2.35-14.40

523

1" IP

2.35-14.40

525

1-1/4" IP

4.45-14.40

527

1-1/2" IP

4.45-14.40

529

2" IP

4.45-14.40

*Clamps available to fit specific size pipe within this nominal size range.

Extra Bolts, Nuts and Washers for Mueller Single Section Servi-Seal Stainless Steel Repair Clamps

Clamp Size

Bolt Size

Bolt Part No.

Nut Part No.

Washer Part No.

2"-12" (Standard Bolt & Nut)

1/2" x 4-1/2"

522997

522998

522999

Deep Socket Wrenchs:

Specially designed for use with Mueller Full- Seal Repair Clamps. Long ratchet handle has thumb-tip reverse. Deep sockets (3-1/4") have double hex (12 pt.) and 1/2" square drive.

Part Number

Description

515204

15-3/4" with 1/2" reversible Ratchet Handle

520344

7/8" Socket for 2" and 3" clamps

 

Bonding Device for Cathodic Protection:
Metallic conductors are set in the gasket to provide contact between the band and the pipe surface and are available on all 500 series clamps. These conductors permit electrical cur- rent flow by establishing positive contact with pipe and band on each side of the pipe crack or break

To specify optional bonding device for cathodic protection, add a prefix of "2-" to catalog number.

Example: 2-521-12-0899

MUELLER® 520 SERIES SINGLE SECTION SERVI-SEAL® STAINLESS STEEL PIPE REPAIR CLAMPS

Mueller 521-529 Single Section Stainless Full-Seal® Pipe Repair Clamps – for 2" through 12" cast iron and steel pipe. Standard Lengths: 6", 7-1/2", 9", 10", 12", 15", 18", 20".

 

Nominal Pipe Size

 

Clamp Size Number

Clamp O.D. Range*

 

Cast Iron

 

Steel

Inches

Millimeters

Min.

Max.

Min.

Max.

2"†

0235

2.35

2.63

59.7

66.8

50-250,A,B,C,D

2"

2-1/2"†

0243

2.43

2.58

61.7

65.5

 

 

2-1/2"†

0270

2.70

2.98

68.6

75.7

50-250,A,B,C,D

2-1/2"

3"†

0297

2.97

3.25

75.5

82.5

-

3" O.D.

3"†

0346

3.46

3.72

87.9

94.4

-

3"

3"†

0373

3.73

4.00

94.8

101.6

50-250,A,B,C,D

-

3-1/2"†

0396

3.96

4.25

100.6

107.9

-

3-1/2" (4" O.D.)

4"

0445

4.45

4.87

113.1

123.6

50-250,A

STD

4"

0474

4.74

5.14

120.4

130.5

50-250,A,B,C,D

-

4"

0495

4.95

5.35

125.8

135.8

-

-

4"

0520

5.20

5.60

132.1

142.2

-

-

6"

0594

5.94

6.34

150.9

161.0

-

6" O.D.

6"

0655

6.55

6.97

164.4

177.0

50-250,A

STD

6"

0684

6.84

7.24

173.8

183.8

50-250,A,B,C,D

-

6"

0704

7.04

7.44

178.9

188.9

-

-

6"

0722

7.22

7.62

183.4

193.5

-

-

8"

0853

8.53

8.93

216.7

226.8

-

STD

8"

0899

8.99

9.39

228.4

238.5

50-250,A,B,C,D

-

8"

0925

9.25

9.65

235.0

245.1

-

-

8"

0940

9.40

9.80

238.8

248.9

-

-

10"

0990

9.90

10.30

251.4

261.6

-

10" O.D.

10"

1064

10.64

11.04

270.3

280.4

-

STD

10"

1104

11.04

11.46

280.5

291.0

50-250,A,B,C,D

-

10"

1137

11.37

11.77

288.8

298.9

-

-

10"

1175

11.75

12.15

298.5

308.6

-

12" O.D.

12"

1260

12.60

13.00

320.1

330.2

-

STD

12"

1314

13.14

13.56

333.8

344.4

50-250,A,B,C,D

-

12"

1356

13.56

13.96

344.5

354.5

-

-

12"

1400

14.00

14.40

355.7

365.7

-

14"

*Verify pipe O.D. before selecting clamp size.
†2"-3-1/2" Standard length is 6", 7-1/2", 9", 10", 12", 15", 18"

IMPORTANT: MUELLER PIPE REPAIR CLAMPS have demonstrated their capability to seal against gas pressures commonly encountered in distribution systems. Smaller diameter clamps of a given design can seal against higher pressures than larger ones. In addition, the pressure that a clamp can contain is effected by the torque applied to the bolts, the uniformity of the bolt tightening (where there is more than one bolt) as well as the type of extent of pipe damage, surface condition of the pipe, environmental conditions and installation workmanship.

Metallic components of repair clamps, including stainless steel, corrode at widely variable rates depending upon many factors, such as installation outdoors or underground, composition of surrounding atmosphere/soil, presence of stray currents, moisture or chemicals, etc. Consequently, repair clamps must be assumed to have a finite service life. Consult with a corrosion professional to determine the life expectancy of this repair clamp taking into consideration all appropriate factors in the application. The piping system designer should determine the suitability of this type product on your particular system. Unforeseen failure of this product could result if these precautions are not taken. Mueller Co. can provide additional material specification information on request by contacting Customer Service: 800-798-3131.


Typical Single Section Full-Seal Clamp - Style Number 521-529:

 

Standard Bolt & Nut:

Deep Socket Wrenchs:

 

Bonding Device:

Add-on Feature: