16.14 Rev. 10-18 Shaded area indicates changes 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" *2", 3" O.D. limited to 18" long Nominal Clamp Size Pipe Size Number 2"† 2-1/2"† 2-1/2"† 3"† 3"† 3"† 3-1/2"† 4" 4" 4" 4" 6" 6" 6" 6" 6" 8" 8" 8" 8" 10" 10" 10" 10" 10" 12" 12" 12" 12" 0235 0243 0270 0297 0346 0373 0396 0445 0474 0495 0520 0594 0655 0684 0704 0722 0853 0899 0925 0940 0990 1064 1104 1137 1175 1260 1314 1356 1400 Clamp O.D. Range* Inches Millimeters Min. Max. Min. Max. 2.35 2.63 59.7 66.8 2.43 2.58 61.7 65.5 2.70 2.98 68.6 75.7 2.97 3.25 75.5 82.5 3.46 3.72 87.9 94.4 3.73 4.00 94.8 101.6 3.96 4.25 100.6 107.9 4.45 4.87 113.1 123.6 4.74 5.14 120.4 130.5 4.95 5.35 125.8 135.8 5.20 5.60 132.1 142.2 5.94 6.34 150.9 161.0 6.55 6.97 164.4 177.0 6.84 7.24 173.8 183.8 7.04 7.44 178.9 188.9 7.22 7.62 183.4 193.5 8.53 8.93 216.7 226.8 8.99 9.39 228.4 238.5 9.25 9.65 235.0 245.1 9.40 9.80 238.8 248.9 9.90 10.30 251.4 261.6 10.64 11.04 270.3 280.4 11.04 11.46 280.5 291.0 11.37 11.77 288.8 298.9 11.75 12.15 298.5 308.6 12.60 13.00 320.1 330.2 13.14 13.56 333.8 344.4 13.56 13.96 344.5 354.5 14.00 14.40 355.7 365.7 Cast Iron Steel 50-250,A,B,C,D 2" 50-250,A,B,C,D - - 50-250,A,B,C,D - 50-250,A 50-250,A,B,C,D - - - 50-250,A 50-250,A,B,C,D - - - 50-250,A,B,C,D - - - - 50-250,A,B,C,D - - - 50-250,A,B,C,D - - 2-1/2" 3" O.D. 3" - 3-1/2" (4" O.D.) STD - - - 6" O.D. STD - - - STD - - - 10" O.D. STD - - 12" O.D. STD - - 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"
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