Type C -  Pipe I.D. Sizes .466” to 1.00”

  • Sizes .466" to 1.00" Pipe I.D.
  • Hole in mandrel for filling or venting.
  • Specifically designed for use in smooth concentric inside diameter pipe or tubing.


USE SAFETY GAG


Type D -  Small Pipe I.D. Sizes 1” to 2.5”

  • Sch. 40 & Sch. 80 Standard Sizes 1" thru 2-1/2” are in stock
  • Special Sizes are available on request
  • Made to fit a specific I.D. with tolerances plus or minus .020”


USE SAFETY GAG


Type D -  Medium Pipe I.D. Sizes 3” to 12”

  • Sch. 40 & Sch. 80 Standard Sizes 3" thru 10” are in stock
  • Special Sizes are available on request
  • Made to fit a specific I.D. with tolerances plus or minus .035”


USE SAFETY GAG


Reverse Pressure Plug -  Pipe I.D. Sizes 1.25” to 12”

Standard Sizes 1-1/4" thru 12"

The Thaxton Reverse Pressure Plug permits testing in a relatively small section of pipe. This will avoid filling long sections of pipe with water in order to hydrostatic test a particular weld or segment of pipe. Reverse plugs have a solid stem and are held in place by hardened steel reverse grips. The seal is made with a Neoprene ring and all steel parts are plated to resist corrosion.

The stem of each plug has an internal left hand thread to accommodate installation tools.

Most applications for reverse pressure plugs require a set of installation tools that we offer.

INSTALLATION TOOLS FOR REVERSE PRESSURE PLUGS
 
Use This End to Adapt to Blind Flange              Left Hand Thread Fits into Plug
 

Type “E” External Gripping Closure

Industry proven closures are available in sizes from ½” to 2-1/2”

Thaxton External closures are designed to quickly seal a plain-end pipe or tube, and eliminate welding on a cap for hydrostatic testing applications. A perfect leak-free seal can be achieved every time at high pressures.

Manufactured from alloy steel or stainless steel. 

 



Large Diameter Test Plugs -  Pipe I.D. Sizes 18” to 25”

Due to the size and weight of the parts, these test plugs are furnished with a series of draw bolts used for expanding the grip segments. The draw bolts allow the installer to expand the grip segments evenly.

This type of pipe test plug is also equipped with a female pipe thread in the bottom of the mandrel which allows the customer to install a vent tube, by using a street ell and the appropriate length of pipe. The vent tube will help remove air pockets from the pipe when conducting hydrostatic tests.


Large diameter test plugs being installed in a test piece

Draw bolts and center mandrel are now tightened

 


Socket Weld Plugs

Standard Sizes 1/2", 3/4", 1", 1 1/4", 1 1/2", 2"

  • Special sizes are available on request.
  • Provisions for filling & venting thru the stem can be furnished when required.
  • Our Socket Weld Plugs eliminate the need for welding plugs onto standard socket weld openings when conducting pressure tests.


USE SAFETY GAG


Safety Gag

The gag is installed after the test plug is in place.  The clamp is tightened around the pipe, with the bull ring located loosely over the stem. If the chain tightens, this would signal the operator to reduce pressure and retighten the test plug.  The clamp also will restrict expansion of the pipe.

Safety Gags are available for all sizes and recommended for use in pressure testing operations.

 

 INSTALLATION AND SAFETY VIDEO AVAILABLE

 PIPE SIZE CHART

 


 

WARNING: PRESSURE TESTING CAN BE SEVERELY HAZARDOUS AND SAFETY PRECAUTIONS MUST BE FOLLOWED

 

WARNING:  THAXTON TEST PLUGS ARE NOT TO BE USED AS LIFTING DEVICES

 


NON-STANDARD TEST PLUGS ARE AVAILABLE FROM THAXTON

For special Non-Standard Test Plugs, please include the following information: 

  • Inside Diameter of Pipe
  • Wall Thickness
  • Depth
  • Pipe Material
  • Type of Test Media (Water, Oil, Gases, etc.)

Please contact us with your special requirements.
Most Schedule 40 and Schedule 80 standard sizes are available from stock.