Patterson Pumps and Asbestos: Product History, Occupational Exposure, and Legal Status

Patterson Pumps is an American manufacturer of industrial pumping equipment with a history spanning much of the twentieth century. The company supplied pumps and related hardware to a wide range of heavy industries, including power generation, petrochemical processing, municipal water systems, shipbuilding, and general manufacturing. According to asbestos litigation records, Patterson Pumps equipment was present on numerous industrial jobsites during the decades when asbestos-containing components were standard features of pumping systems across American industry.

This reference article is intended to help workers, family members, and legal researchers understand the documented history of asbestos-related allegations involving Patterson Pumps equipment, the nature of occupational exposures associated with industrial pump work, and the legal options currently available to individuals who may have been harmed.

Company History

Patterson Pumps has operated as an industrial pump manufacturer based in the United States, producing equipment for some of the most demanding fluid-handling applications in American industry. The company’s products were engineered for high-pressure and high-temperature environments — conditions that made asbestos-containing sealing and insulating materials a common engineering choice for much of the mid-twentieth century.

Throughout the 1940s, 1950s, 1960s, and 1970s, Patterson Pumps supplied equipment to industries where thermal management and pressure containment were critical concerns. Power plants, oil refineries, chemical processing facilities, paper mills, and naval vessels all relied on pumping systems during this era, and industrial standards of the time routinely incorporated asbestos gaskets, packing materials, and insulation into pump assemblies. The company is believed to have substantially reduced or eliminated the use of asbestos-containing components in its products by the early 1980s, consistent with broader regulatory and industry shifts during that period.

Asbestos-Containing Products

According to asbestos litigation records, plaintiffs alleged that Patterson Pumps manufactured, supplied, or specified pumping equipment that incorporated asbestos-containing components during the mid-twentieth century. Court filings document that the types of asbestos-containing materials most commonly associated with industrial pump systems of this era included:

Pump Packing and Shaft Seals Braided asbestos packing was widely used in pump stuffing boxes — the recessed chambers around a pump’s rotating shaft — to prevent fluid from leaking along the shaft. Plaintiffs alleged that Patterson Pumps equipment utilized asbestos-based packing materials that required routine replacement and adjustment. This maintenance work was a recognized source of asbestos fiber release, as worn packing had to be extracted with picks or hooks, generating dust in the immediate work area.

Gaskets and Flange Seals Compressed asbestos fiber (CAF) gaskets were standard components in pump flanges, covers, and casing joints throughout this period. Court filings document that workers who installed, repaired, or overhauled industrial pumps routinely encountered asbestos gaskets, which required scraping and grinding during removal to achieve a clean mating surface. Plaintiffs alleged that these gasket materials contained significant percentages of chrysotile and, in some cases, amphibole asbestos fibers.

Thermal Insulation on Pump Bodies and Associated Piping High-temperature pump applications — particularly those found in steam systems, power plant feedwater systems, and chemical processing — frequently involved the application of asbestos block, blanket, or spray insulation directly to pump casings and the piping that served them. According to asbestos litigation records, workers who installed or removed this insulation in proximity to Patterson Pumps equipment were potentially exposed to airborne asbestos fibers as a result.

Valve and Fitting Components Pump systems are integrated with valves, expansion joints, and fittings that historically incorporated asbestos-containing seats, packing, and insulation. Court filings document that the replacement and servicing of these associated components contributed to the overall asbestos exposure burden for workers maintaining pump systems on industrial jobsites.

It is important to note that asbestos-containing gaskets and packing were also manufactured and supplied by numerous third-party component makers whose products were used in conjunction with pump equipment from many manufacturers. Litigation records reflect ongoing questions about the respective roles of pump original equipment manufacturers (OEMs) and component suppliers in the chain of asbestos exposure.

Occupational Exposure

Workers in several trades and industries faced potential asbestos exposure through contact with Patterson Pumps equipment and associated systems, according to asbestos litigation records. The following occupations and work environments appear most frequently in court filings involving industrial pump systems of this era:

Power Plant Workers Steam-driven power generation relies heavily on high-capacity pumps — feedwater pumps, condenser pumps, boiler feed systems — that operated continuously at elevated temperatures and pressures. Plaintiffs alleged that millwrights, pipefitters, and maintenance mechanics at coal-fired and nuclear generating facilities encountered asbestos-containing pump components during both routine maintenance and major overhaul work.

Shipyard Workers and Naval Personnel The United States Navy and commercial shipbuilding industry used industrial pumps extensively in bilge systems, fire suppression systems, fuel transfer, and cooling applications. According to asbestos litigation records, confined shipboard spaces concentrated asbestos fiber exposure during pump maintenance, as adequate ventilation was often unavailable. Machinists, pipefitters, and boilermakers working in engine rooms and below-decks spaces were among those identified in court filings as potentially exposed through pump-related work.

Petrochemical and Refinery Workers Petroleum refineries and chemical processing plants operated large numbers of pumps for fluid transfer, heating, and pressurization applications. Court filings document that pump mechanics and instrument technicians at these facilities routinely repacked pump stuffing boxes and replaced gaskets as part of scheduled maintenance programs — tasks that generated asbestos dust when performed without adequate protective equipment.

Pipefitters, Millwrights, and Steamfitters These trades were responsible for installing, maintaining, and repairing pump systems across virtually every heavy industrial sector. Plaintiffs alleged that the hands-on nature of pump maintenance work — including packing removal, gasket scraping, and insulation disturbance — placed these workers in direct proximity to disturbed asbestos-containing materials on a recurring basis throughout their careers.

Industrial and Manufacturing Facility Workers Paper mills, steel plants, food processing facilities, and general manufacturing operations all relied on pumping systems that, according to asbestos litigation records, incorporated asbestos-containing sealing and insulating components during the mid-twentieth century. Maintenance personnel at these facilities faced cumulative exposure across years or decades of pump servicing work.

Asbestos-related diseases, including mesothelioma, asbestosis, and lung cancer, are known to develop after a latency period of twenty years or more following initial exposure. Workers who performed pump maintenance work during the 1950s through the early 1980s may only now be receiving diagnoses of these conditions.

Patterson Pumps does not appear to have established a dedicated asbestos bankruptcy trust fund. Unlike manufacturers that resolved their asbestos liability through Chapter 11 reorganization and established trust funds under Section 524(g) of the U.S. Bankruptcy Code, Patterson Pumps has been addressed through the active civil litigation system.

According to asbestos litigation records, individuals alleging asbestos exposure from Patterson Pumps equipment have pursued claims through the traditional court process, naming Patterson Pumps as a defendant alongside other manufacturers, distributors, and product suppliers whose equipment or components were present at the same jobsites.

Because no trust fund has been established, claims against Patterson Pumps are not processed through an administrative claims facility. Instead, plaintiffs work with experienced asbestos litigation attorneys to file civil lawsuits and seek compensation through negotiated settlements or jury verdicts. Court filings from multiple jurisdictions document claims involving Patterson Pumps equipment, though the specific outcomes of individual cases are subject to confidentiality agreements and court records that vary by venue.

If you worked as a pump mechanic, pipefitter, millwright, power plant worker, shipyard worker, or in any capacity that involved maintaining or working near industrial pump systems from the 1940s through the early 1980s, you may have been exposed to asbestos-containing components associated with Patterson Pumps or similar equipment.

What you should know:

  • Patterson Pumps has been named as a defendant in asbestos personal injury litigation, according to court filings. No bankruptcy trust fund currently exists for this manufacturer.
  • Claims against Patterson Pumps proceed through civil litigation rather than a trust fund claims process.
  • Mesothelioma, lung cancer, and asbestosis diagnoses connected to occupational asbestos exposure may support a legal claim, even if your exposure occurred decades ago.
  • Multiple defendants — including other pump manufacturers, gasket and packing suppliers, and insulation manufacturers — may share responsibility for exposure at the same jobsites, and experienced asbestos attorneys routinely investigate the full range of products present at a claimant’s work history locations.
  • Statutes of limitations apply to asbestos claims and generally begin running at the time of diagnosis, not at the time of exposure. Consulting an attorney promptly after diagnosis is advisable.

Workers and family members seeking to understand their legal options should consult with an attorney who specializes in asbestos personal injury and wrongful death litigation, as these cases involve complex product identification, exposure documentation, and multi-party liability analysis.