EBAA Iron, Inc. is an industry leading manufacturer of external pipe joint restraint devices that are specifically designed for use on pressurized or non-pressurized waterworks piping systems. Since 1964, EBAA has been a proud privately-held and family-owned N. American based company currently Headquartered in Eastland, TX.

The guiding principles of our founder, Mr. Earl C. Bradley, has continued to lead us in providing innovative piping products primarily for use in the water and wastewater industries. EBAA products are designed and engineered to not only save time and money from their initial date of installation - but more importantly, our products are designed with the intent that they must also protect and ensure the long-term integrity of the piping system.

EBAA is the original manufacturer and patent holder of the world famous MEGALUG® Mechanical Joint Restraints, the MEGAFLANGE® Restrained Flange Adapter, the MEGA-COUPLING® Restrained Pipe Coupling and the wide array of FLEX-TEND® Flexible and/or Expansion Joint family of products.

EBAA is also proud to proclaim that all of its pipe restraint products are 100% MADE IN USA - 100% of the time, every time!


The Series 1100 MEGALUG® Mechanical Joint Restraints effectively and economically restrain Ductile Iron Pipe (DIP) to mechanical joints above or below ground, for practically any application including valves, hydrants, and pipe. For use on all classes of ductile iron pipe (PC350 through PC150 and CL56 through CL50) without damage to the pipe or cement linings. It can also be used on steel pipe and cast iron pipe when joining to mechanical appurtenances, see product brochure for more details on these pipes.

The Series 1100TDM Tandem MEGALUG restrain ductile iron pipe to mechanical joint fittings, pipe and appurtenances that require high PSI ratings. It consists of one Series 1100 MEGALUG and one Series 1100 MEGALUG with the MJ lip removed as to sit properly behind the first.

The EX-TEND® 200 joint is designed for pipelines that are subjected to expansion and contraction forces and is self restrained at full expansion.

FLEX-TEND Force Balanced Flexible Expansion Joints are designed to protect water pipeline systems from the stresses produced by ground motion either from seismic activity or gradual soil subsidence. The Force Balanced FLEX-TEND unlike conventional flexible/expansion joints does not generate an axial thrust that must be compensated for.

The Force Balanced EX-TEND® Expansion/Contraction Joint is designed to provide expansive or contractive movement to water pipelines subjected to linear movement. Unlike normal expansion joints, the Force Balanced EX-TEND does not generate an imparting thrust.

The Restraint Harness consists of one Series 1100 MEGALUG Restraint and one split bell back up ring. For use on water or wastewater pipelines subject to hydrostatic pressure and tested in accordance with either AWWA C600 or ASTM D2774.

The Series 2000PV MEGALUG Mechanical Joint Restraint is the fastest and most economical method of restraining PVC pipe to mechanical joints. It can be used with C900, C905 or IPS OD PVC pipe. For sizes 42 through 48 inch See Series 2200

The Series 1900 is designed for restraining push-on bell and spigot AWWA C909 PVC Pipe. The harness consists of two split serrated restraints one on the spigot end and another behind the bell harnessed together by an array of thrust rods. The Restraint harness is rated to the full pressure of the pipe.

The Series 3800 MEGA-COUPLING is a restrained coupling for similar and dissimilar pipe materials. Nominal Pipe Sizes 4 inch through 12 can be used on: Ductile Iron Pipe (DIP), C900 PVC Pipe, ASTM 2241 PVC (IPS), Carbon Steel Pipe, HDPE Pipe, or a combination thereof. Sizes 14 inch through 36 inch can be used on Ductile Iron Pipe (DIP), C905 PVC Pipe or both and 54 inch can be used on DIP.

The Series 2200 MEGALUG Mechanical Joint Restraint for use on Large Diameter (C905) AWWA PVC Pipe is a solid ring restraint for restraining PVC pipe to mechanical joint fittings and appurtenances.

FLEX-TEND Flexible Expansion Joints are designed to protect water or wastewater pipeline systems from the stresses produced by ground motion or shear either from seismic activity or gradual soil subsidence.

The Series 2100 MEGAFLANGE Restrained Flange Adapter is a field-adaptable wedge style restrained flanging system. It has a restraint ring and a gasket ring to give the maximum amount of flexibility during and after installation. The MEGAFLANGE can be used on AWWA C900 and C905 PVC Pipe, IPS O.D. (Class) PVC Pipe, Ductile Iron Pipe, Steel Pipe, and HDPE Pipe.



P.O. Box 857

Eastland, TX 76448


Phone: 800-433-1716

Fax: 254-629-8931

Contact: Rick Rackow


  • Flexible Expansion Joints Provide Protection For Pipelines Subject To Subtle Or Sudden Movement

    Flex-Tend flexible expansion joints have a proven record of providing protection for pipelines subject to subtle or sudden movement. As with all products used in the water and wastewater industry, protection is optimized with the selection of the proper assembly incorporated into a sound design. This paper is intended to provide assistance in both of these areas.

  • How Does The Force Balanced FLEX-TEND® Product Work?

    There are numerous configurations of flexible and expansion joints available to the design engineer. They include bellows joints, flexible hoses, bolted-mechanical couplings, and ball joints. In 1989 EBAA Iron, Inc. introduced the FLEX-TEND® joint (FT) flexible expansion joint product into the US market. Constructed of ductile iron, the product is comprised of two ball joints joined by an expansion joint. For the first time one product was available to protect pipelines and pipeline connections from differential movement resulting from seismic activity and soil expansion/contraction in areas of poor soil support, frost heave, and transitions from stable to unstable areas.

  • FLEX-TEND® Flexible Expansion Joints, Features And Specifications

    FLEX-TEND® flexible expansion joints are designed to protect structures and pipelines from differential movement whether this movement is earthquake induced or the gradual motion of soil subsidence. This bulletin offers a concise listing and discussion of the important features and materials of the double and single ball assemblies.

  • Restrained Pipeline Design And Horizontal Bends

    In the last forty years, a quiet revolution has occurred in our industry. This revolution is the result of new generations of joint restraint products that make it possible to quickly and safely restrain fittings at bends, dead ends, tees, valves, and reducers without the need for concrete thrust blocks or tie rods. These joint restraint products turn the pipeline into its own thrust block. The key to utilizing these new products is the understanding and proper application of the pipeline restraint design theory.

  • Product Traceability

    The Merriam-Webster Online Dictionary defines traceability as “a: to follow the footprints, track, or trail of b: to follow or study out in detail or step by step… c: to discover by going backward over the evidence step by step … d: to discover signs, evidence, or remains of”. At EBAA Iron traceability allows you as the end user or us as the manufacturer to go backward into the production process and discover the signs that reveal the casting properties to the base level.

  • Joint Restraint vs. Thrust Blocks

    The question often arises “Can you really eliminate thrust blocks using joint restraint?” This bulletin will provide you with the information needed for you to realize the answer to that question is “yes”. For many years, thrust blocks have been successfully used in distribution systems all over the world. Thrust blocks, however, are not without limitations.

  • Thrust Restraint Design Equations And Soil Parameters For Ductile Iron And PVC Pipe

    These equations and soil parameters are an effort to provide the piping system designer with conservative techniques and parameters for the design of underground restrained joint piping systems. They utilize recognized design equations and conservative soil parameters. The design equations in this handbook have proven useful in a wide variety of applications since 1982. The soil parameters presented include the results of an extensive study of the actual frictional performance of soils on ductile iron, ductile iron encased with polyethylene, and PVC pipe.

  • Thrust Resistant Design Of Dead Ends, Valves, Reducers, And Encroaching Restrainted Lengths

    This bulletin describes the restrained length calculations for dead ends, valves, reducers, and sleeves with a discussion of several situations where economics and other factors may favor an alternate restraint method. Consideration overlapping or encroaching restrained lengths and of restrained piping having expansion joints and repair clamps is also discussed.

  • Thrust Restraint Design Of Vertical Offsets And Tees

    There are numerous fitting combinations and configurations that are used in the everyday construction of pressurized water lines. This report describes vertical offsets, tees, and using joint restraint products to simplify their installation. The use of joint restraint products virtually eliminates thrust blocks and tie rods.

  • Bridge Crossings And The Proper Use Of EX-TEND®, FLEX-TEND®, And Force Balanced FLEX-TEND Products

    Bridges can serve as very convenient structures for routing utility piping over obstacles such as rivers, canyons, or highways. Where allowed, there can be multiple lines utilizing the crossing. Of particular interest for this discussion is the locating of pressurized water lines on and under bridge structures. Pressurized pipelines can present a number of unique challenges to the design engineer and utility owner.

  • Bearing And Frictional Resistance: The Building Blocks Of A Restrained System

    Connections bulletins PD-1 through PD-4 discuss some of the specific applications of the design of a properly restrained pipeline. PD-2 specifically addresses horizontal bends and the various parameters involved in the design process. PD-3 applies those parameters to the design of vertical offsets and tees. Finally, the design of reducers, dead ends, and miscellaneous fittings is discussed in PD-4. This bulletin delves into a more detailed discussion of the bearing and frictional resistance forces at work to balance thrust forces generated in pressurized pipelines. To see how this information relates to the various pipeline elements, please refer to the other Connections bulletins.