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MUELLER ® NO-BLO ® 3" - 12" LINE STOPPER FITTINGS 11.11 Rev. 3-08 Shaded area indicates changes Mueller line stopping equipment, fittings and methods for for stopping off 3" to 12" gas mains have been used by the gas industry since 1955 to make fast, safe and reliable stop-offs. Mueller Co. offers a number of different styles of line stopping fittings and equipment in sizes and pressure ratings to meet almost any requirement you may have on standard wall and thin wall steel pipe. Mueller 3" - 12" NO-BLO Line Stopper Fittings Standard Line Stopper Fitting Bottom-out Line Stopper Fitting Side-out Line Stopper Fitting Mechanical Joint Line Stopper Fitting Extension Stopper Fitting Spherical Line Stopper Fitting Dead-end Extension Stopper Fitting Insulated Mechanical Joint Line Stopper Fitting Flanged Tee Mueller Save-A-Valve ® Drilling Nipple
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11.12 Shaded area indicates change Rev. 12-06 MUELLER ® LINE STOPPER FITTING WELDING TYPE - 275 PSIG o Ca talog number – H-17255 o Sizes – 3", 4" x 3"**, 4", 6", 8", 10", 12" o For use on steel pipe only o O-ring sealed cast iron (ASTM A126 CLB) Completion Plug with equalizing valve (part # 580912) o Flange, fitting top and bottom halves are forged steel (ASTM A105) o Completion Cap cast iron (ASTM A126 CLB) o Class 150 flange complies with dimensional requirements of ANSI B16.5 o 275 psig*** (1896 kPa) maximum working pressure at 100F (38C) Completion Cap Completion Cap Bolts and Nuts Completion Plug O-ring Test Plug Gasket Equalizing Valve Completion Plug Assembly H-17255 Pipe Dimension Size* of Line Stopper Fitting Outside Diameter of Shell Cutter Required 3" 4" x 3"** 4" 6" 8" 10" 12" 3-1/4" 4-1/4" 4-1/4" 6-1/4" 8-1/4" 12-1/2" 12-1/2" Outside Diameter of Pipe 3.500" 3.500" 4.500" 6.625" 8.625" 10.750" 12.750" Maximum Wall Thickness No limit No limit No limit .432" (sch. 80) .406" (sch. 60) No limit .375" Pipe Dimensions Minimum Wall Thickness .188" No limit .188" .250" .250" No limit .188" Maximum Inside Diameter 3.124" No limit 4.124" 6.125" 8.125" No limit 12.374" Drilling/Line Stopping Machine combinations that can be used to install and stop-off H-17255 Fittings Line Stopper Units Drilling Machine Unit No. 2 Unit No. 3 Unit No. 3SW Unit No. 3SW-500 Unit No. 4SW H-17255 C1-36 3", 4" x 3" and 4" 6" and 8" 4" x 3" 4", 6", and 8" 4" x 3", 4", 6", and 8" 10" and 12" Replacement Parts Fitting Size* 3" 4" 4" x 3"** 6" 8" 10" 12" Completion Cap 36590 36592 36592 36609 36625 61867 61867 Test Plug 64134 64134 64134 64134 64134 64134 64134 Completion Cap Bolts and Nuts (No. Required) 503708 (6) 36731 (8) 36731 (8) 36446 (8) 503709 (8) 52056 (12) nut 90230 (12) bolt 52056 (12) nut 90230 (12) bolt Completion Cap Gasket 43959 36377 36377 62945 63094 46434 46434 Completion Plug Assembly 83484 83485 83485 83487 83493 83560 83560 O-ring Seal 43922 43917 43917 79895 79020 46428 46428 *Nominal ** The 4" x 3" size fitting is a 4" fitting that has been modified to fit 3" steel pipe. This fitting uses 4" tools and equipment. ***This is the maximum pressure of the fitting installed in the line at 100F for Class Locations 1, 2, 3 and 4 as defined in D.O.T./CFR TITLE 49 PART 192. It may be necessary to reduce the line pressure during the drilling, stopping or plugging operations to the maximum working pressure of the machine or its attachments.
