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Home > Mechanical Plugs Low and High Pressure > 151 Series High Lift Flange Weld Test By-Pass Plugs�

Pipe Plugs and Packer for most size, pressure, chemical, and temperature requirements

High Lift Flange Weld Test Plugs Sizes: 3/4" to 24", 151-Series

high lift weld flange

For testing pressures up to 1125 psi

Prices and Specifications for 3/4" to 8"
Prices and Specifications for 10" to 16"
Prices and Specifications for 18" to 24"

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For Portable Hydrostatic Test Pumps click here

151-Series High Lift Flange Test & Welding Plugs Operating Instructions for Sizes 3/4" to 8"

151-Series High Lift Flange Test & Welding Plugs Operating Instructions for Sizes 10" to 24"

These plugs have a Urethane seal.

  • Fast, easy installation, and testing.
  • Segmented compression tube allows adjustment of seal installation depth.
  • Faster pipe repairs and retrofits.
  • Improved Seal-to-Pipe Clearance: Plug can be easily installed and removed, even where there is severe weld protrusion.
  • Low water requirements resulting in less waste water.
  • A minimum of 1.5:1 safety factor.
  • Rugged, heavy-duty construction.
  • Versatile: Seal and washer sets easily change to accommodate different pipe schedules.
  • Ported Center Shaft: Permits monitoring of downstream pressure of inert gas rejection.
  • Flange classes 150 - 600 lbs.
  • Seal Materials: Urethane Standard.
  • Flange style is Raised Face type.
  • Test plugs do not include flange gaskets or nuts & bolts
Maximum Test Pressures


Maximum psig

Flange Class
600 & up
*Consult Factory
Pipe Size
Crowfoot Wrench or Socket Size
3/4" to 1"
9/16" Crowfoot Wrench
1 1/4" to 2"
15/16" Crowfoot Wrench
2 1/2" to 4"
2" Deep Impact Socket
6" to 8"
3 1/8" Deep Impact Socket
10" to 24"
1 5/8" Deep Impact Socket

weld flange plugs

weld flange plug weld flange plug

* Seal-to-pipe clearance: approximately 1/2". Clearance may be slightly smaller on plugs that accommodate more than one schedule size. Replacement washers: required on all schedule sizes except for the smallest ID for each size pipe.

** External O-ring: included on 10" and 12" seals.

Other flange class ratings and pipe schedules available upon request. Call for pricing.

Ordering information needed: flange size and rating, pipe ID or schedule, and test pressure.