Storing TDW Pigs and Unispheres

TDW PIGGING INSIGHTS - Episode 2

Overview of Storage of TDW Pigs and Unispheres

TDW assorted pigs

TDW Pigs/Spheres are constructed with strength, flexibility, and resistance to hydrocarbons. For TDW pigs to do the job they were designed for, they must be stored correctly.  This blog gives a brief overview, with areas of consideration.

To learn more about TDW Pigs or find Resource guides, see the
TDW Pig Resource page.

tips for storing pigs

• Humidity and temperature can have a negative effect on the shelf life of urethane. Shelf life maximized when temp is 75F and humidity less than 50%.

• Assembled pigs are ideally stored on a stand supporting the pig’s weight. 

• Brush/blade pigs should be stored standing on their end. If they are stored on the side, the blades, springs, cups and the supporting the weight of the pig on the ground can lead to deformation.

• Cups can be stacked upside down if the weight is not enough to distort lower stacked cups.

• Spheres – new spheres are best left in the shipping carton until use.  After use, any liquids can be left in the sphere pressurized.

• If pigs are stored long term, before using it is important to inspect them carefully. Look for softened/darkened urethane that will compromise performance. For example, if a flat blade screw can be pushed into the material, it is safest to discard the pig.

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If you have questions, please contact the Kerr Engineered Sales Company who are also available for team for presentations, lunch and learns and customer visits.

Running pigs through a pipeline? TDW REALSEAL® is the best.

TDW PIGGING INSIGHTS - volume 1

REALSEAL® – Are you looking for the most effective seal possible when running pigs through your pipeline?

TDW has the answer. The multi-lip RealSeal® cups are designed to provide the most effective sealing surface of any cups on the market. Whether it's a nitrogen purge, commissioning or filling and dewatering for hydrostatic testing, TDW pigs equipped with RealSeal® cups save time and money and perform better than conventional cups.

Features & Benefits

• The RealSeal® l option features multiple sealing lips, which means a more effective seal through the pipeline run.

• Girth welds in the pipeline allow for multiple leak paths.

• Using TDW's RealSeal® cups seals these leak paths where conventional cups do not. 

Example of OptionALL 4 Cup 2 Brush Pig with REALSEAL Cups

Typical applications for the RealSeal® options include:

• Nitrogen purges

• Line filling for hydrostatic testing

• Dewatering after hydrostatic testing

• Commissioning

• Decommissioning

• Conversion of pipeline from one product to a different product

• Removal of water or other liquids from low points in pipeline

• Batch separation

• Cleaning

If you have questions, please contact the Kerr Engineered Sales Company who are also available for team for presentations, lunch and learns and customer visits.

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EGCR 2023 Marks 50 Year Kerr Legacy

EGCR- May 2-4 David L. Lawrence Convention Center

Join David Kerr and Nigel Belshaw May 2-4 at Booth # 408 at the 2023 Eastern Gas Compression Roundtable (EGCR) in Pittsburgh. EGCR is a non-profit organization whose primary purpose is to provide the Natural Gas Industry with cost effective training programs focusing on engine and compressor maintenance. Countless operators, engineers, gas pipeline managers, industry leaders and insiders have gone through EGCR training. 

One of the most popular tracks is the Entry Level Compressor Station Operator Training which focuses on the basics for those new to the industry including: yard piping, auxiliary systems, prime movers, compressor components and operating characteristics of reciprocating and centrifugal compressors.

ZEVAC Session: Compressor Unit and Station Maintenance without Blowdowns

ZEVAC MINI

Doug Sahm, PE, from ZEVAC, is leading a session Tuesday afternoon for Compressor Unit and Station Maintenance without Blowdowns. ZEVAC: Zero Emission Vacuum & Compressor is answering the call to eliminate blowdowns from compressors and compressor stations with new D3 technology that doesn't require any external power source (runs on station dP) and allows closed-loop design of the stations so that they are future-proofed and avoid any current or future methane penalty costs.

50 Year EGCR & KERR Legacy 

David Kerr, Kerr Engineered Sales CEO is the Chairman of EGCR for 2023. David is continuing a fifty year legacy of Kerr Engineered Sales and EGCR collaboration. The first EGCR Roundtable was held in 1973 at West Virginia University. David’s Father, Arthur J. Kerr, Jr, President of Kerr Engineered Sales Co. was one of the early pioneers that led industry discussions addressing the need for training and support to address operating and maintenance for compressor systems. 

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Kerr Engineered Sales Company has been representing leading pipeline repair and performance companies in Eastern US since the company was founded in 1952. Seventy one years later, the company is still a family run business serving customers with the highest quality service and support.

NEW - TDW Flange Protection

TDW now places protectors like the one pictured below on all of their flanges to protect the gasket face. They can be left on during weld procedure and do not need to be removed until the valve is ready to be attached. This helps protect the gasket face while installing. From now on, all TDW fittings will have these protectors fitted.

TDW Flange Protectors

The KERR team is available for presentations, lunch and learns and customer visits.

We at Kerr Engineered Sales Company know how important it is for operators to ensure safe and optimized operations for pipeline products and services. Our team has been offering solutions to pipeline operators for over 70 years, and has represented TD Williamson since 1952. TDW has been providing superior products and services to the industry for over 100 years. We stand behind the promise that TDW offers the best in class Closures in the industry.

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