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H-17251

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H-17251

Mueller® Extension (Dead End) Line Stopper Fitting Welding Type - 275 PSIG

Catalog number: H-17251

Specifications:

  • Sizes – 4", 6", 8"
  • Used to extend dead ends
  • For use on steel pipe only
  • O-ring sealed cast iron (ASTM A126 CL.B) Completion Plug with equalizing valve
  • Completion Cap cast iron (ASTM A126 CL.B)
  • Flange, fitting top and bottom halves are forged steel (ASTM A105)
  • Class 150 flange complies with dimensional requirements of ANSI B16.5
  • 275 psig** (1896 kPa) maximum working pressure at 100F (38C)
**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. Refer to charts on following pages.

Catalog PDF

Demonstration Video

Pipe Dimension:

Size* of Line Stopper Fitting

Outside Diameter of pipe

Pipe Dimensions

Maximum Wall thickness

Minimum Wall thickness

Maximum Inside Diameter

4"

4.500"

No limit

.188"

4.124"

6"

6.625"

.432" (sch. 80)

.250"

6.125"

8"

8.625"

.406" (sch. 60)

.250"

8.125"

Replacement parts:

Fitting Size*

Completion Cap

Test plug

Completion Cap Bolts and Nuts (No. Required)

Completion Cap Gasket

Completion plug Assembly

O-ring Seal

4"

36592

64134

36731 (8)

36377

83485

43917

6"

36609

64134

36446 (8)

62945

83487

79895

8"

36625

64134

503709 (8)

63094

83493

79020

*Nominal

Equipment required to install and stop-off H-17251 extension (dead end) type welding Line Stopper Fitting:

Tool Name

Quantity Required

Line Stopper Unit No. 2

Line Stopper Unit No. 3

4" H-17251

6" H-17251

8" H-17251

Stopping Machine

2

H-17235

H-17235

H-17335

Gate Valve

2

 

83953

83953

Valve Adapter

2

-

501223

-

Solid Rubber Stopper

2

88614

682365

88699

Top Bypass Rubber Stopper

2

88613

682364

88626

FullBypass Rubber Stopper

2

680515

682364

680517

Completion Machine

1

H-17246

H-17345

H-17345

Plug AlignmentTool

1

83522

83519

83519

Plug Inserting Tool

1

83520

83517

83517

Plug Extracting Tool

1

83521

83518

83518

Completion Plug Wrench

1

36404

36424

36424

Tool Adapter

2

-

37197

37197

Retaining Screw Wrench

1

-

88475

88475

Thread Cleaning Tool

1

89317

89318

89318

Inspection Flange

1

H-17619

H-17619

H-17619

 

Tool Name

Qty.Req'd.

Line Stopper Unit No. 3SW

Line Stopper Unit No. 3SW-500

4"

6"

8"

4"

6"

8"

H-17251

H-17251

H-17251

H-17251

H-17251

H-17251

Stopping Machine

2

H-17340

H-17340

H-17340

H-17342

H-17342

H-17342

Gate Valve

2

83953

83953

83953

83721

83721

83721

ValveAdapter

2

83513

501223

-

501361

63205

63193

Steel Wedge Stopper*

1

89694

89696

89698

89694

89696

89698

Completion Machine

1

H-17346

H-17346

H-17346

H-17347

H-17347

H-17347

Plug Alignment Tool

1

83774

83250

83250

83774

83250

83250

Plug Inserting Tool

1

83772

83237

83237

83772

83237

83237

Plug Extracting Tool

1

83773

83238

83238

83773

83238

83238

Completion Plug Wrench

1

36404

36424

36424

36404

36424

36424

Thread Cleaning Tool

1

680360

89319

89319

680360

89319

89319

Inspection Flange

1

H-17619

H-17619

H-17619

H-17619

H-17619

H-17619

* Steel Wedge Stopper with urethane cover suitable for use with gas and petroleum.