Milwaukee Valve Company and Asbestos-Containing Products

Milwaukee Valve Company has appeared as a defendant in asbestos personal injury litigation filed by industrial workers who alleged exposure to asbestos-containing components associated with the company’s valve and steam trap products. According to asbestos litigation records, workers in industrial settings including refineries, power plants, shipyards, and manufacturing facilities claimed contact with asbestos-containing materials in connection with Milwaukee Valve equipment during the mid-twentieth century.

This reference article is intended to assist workers, their families, and legal professionals in researching potential occupational asbestos exposure histories involving Milwaukee Valve Company products.

Company History

Milwaukee Valve Company is an American manufacturer of industrial valves, steam traps, and related flow-control equipment. The company has historically supplied products to a broad range of industrial sectors, including power generation, oil refining, chemical processing, marine applications, and commercial building systems. Milwaukee Valve’s product lines were widely distributed throughout American industrial infrastructure during the postwar decades — a period when asbestos use in industrial components was commonplace and largely unregulated.

During the 1940s through the early 1980s, asbestos was a standard material in the manufacture and installation of valves and steam traps across the American industrial supply chain. Asbestos-containing gaskets, packing materials, and insulation were used routinely in high-temperature and high-pressure fluid-handling systems because of asbestos’s well-documented resistance to heat, steam, and chemical corrosion. Milwaukee Valve Company’s products operated within these same industrial systems, and according to asbestos litigation records, plaintiffs alleged that asbestos-containing components were integral to the operation and maintenance of Milwaukee Valve equipment during much of this period.

The company is reported to have ceased use of asbestos-containing components in its products in approximately the early 1980s, consistent with broader industry trends driven by increasing regulatory scrutiny and mounting awareness of asbestos-related health risks.

Asbestos-Containing Products

Milwaukee Valve Company manufactured a range of valve and steam trap products that plaintiffs alleged contained asbestos or required the use of asbestos-containing components during installation, maintenance, and repair. According to asbestos litigation records, the specific product categories at issue have included:

Industrial Valves Milwaukee Valve’s gate valves, globe valves, ball valves, check valves, and butterfly valves were sold for use in steam, water, and chemical service systems throughout American industry. Court filings document allegations that these valves were manufactured or sold with asbestos-containing internal packing and gaskets. Valve packing — the material used to create a pressure seal around a valve stem — was frequently made from braided or compressed asbestos fiber during this era. Plaintiffs alleged that asbestos stem packing was a standard component of Milwaukee Valve products intended for high-temperature steam service.

Steam Traps Steam traps are mechanical devices used to discharge condensate and non-condensable gases from steam systems while preventing the loss of live steam. According to asbestos litigation records, plaintiffs alleged that Milwaukee Valve’s steam trap products contained asbestos-containing internal gaskets and sealing components. Steam traps operate under conditions of sustained heat and pressure, environments in which asbestos-based sealing materials were considered industry-standard through much of the twentieth century.

Replacement Parts and Maintenance Components Court filings document allegations that asbestos-containing replacement gaskets and packing materials were supplied or specified for use in the maintenance of Milwaukee Valve equipment. Workers performing routine valve maintenance — including repacking valve stems or replacing gaskets on steam trap covers — were among those who alleged asbestos exposure in connection with Milwaukee Valve products.

It is important to note that the presence of asbestos in valve packing and gasket materials during this era was not unique to Milwaukee Valve. Asbestos-containing sealing components were an industry-wide standard, and many manufacturers sourced these materials from third-party suppliers. Nonetheless, plaintiffs alleged that Milwaukee Valve, as a seller and in some instances a manufacturer of complete valve assemblies, bore responsibility for asbestos-containing components associated with its products.

Occupational Exposure

According to asbestos litigation records, workers across a wide range of industrial trades alleged asbestos exposure in connection with Milwaukee Valve products. The occupations most frequently identified in court filings include:

  • Pipefitters and steamfitters, who installed, maintained, and repaired valve systems in power plants, refineries, and industrial facilities
  • Boilermakers, who worked in proximity to steam systems containing Milwaukee Valve equipment
  • Millwrights and maintenance mechanics, who performed valve repacking and gasket replacement as part of routine equipment maintenance
  • Shipyard workers, including pipefitters and machinists who worked on marine steam systems aboard Navy vessels and commercial ships
  • Power plant operators and maintenance workers, who encountered valve packing and steam trap gaskets during normal operations and scheduled outages
  • Insulators, who applied or removed asbestos insulation from valve bodies and adjacent steam line components

The exposure mechanisms alleged in asbestos litigation records are consistent with known patterns of asbestos fiber release during valve-related work. Removing worn valve packing — particularly dry, degraded asbestos packing — is documented in occupational health literature as a process capable of generating significant airborne asbestos fiber concentrations. Similarly, cutting or trimming sheet asbestos gaskets to fit valve bonnets or steam trap covers, and grinding or wire-brushing gasket surfaces during maintenance, are activities associated with elevated asbestos exposure potential.

Plaintiffs further alleged that exposure was not limited to workers directly performing valve maintenance. Bystander exposure — the inhalation of asbestos fibers released by nearby workers — was alleged by pipefitters, laborers, and others who worked in the same areas where valve maintenance was being performed.

The industrial settings where Milwaukee Valve equipment was most commonly used — power generation facilities, petroleum refineries, chemical plants, and shipyards — were environments characterized by high concentrations of asbestos-containing products from multiple manufacturers and trades. This co-exposure context is relevant to both the medical history of affected workers and the legal history of asbestos litigation involving Milwaukee Valve.

Milwaukee Valve Company has been named as a defendant in asbestos personal injury lawsuits. According to asbestos litigation records, plaintiffs alleged that the company manufactured, sold, or supplied valves and steam trap products that contained asbestos or required asbestos-containing components, and that the company knew or should have known of the hazards associated with asbestos exposure.

Court filings document claims sounding in strict products liability, negligence, and failure to warn. Plaintiffs in these cases alleged that Milwaukee Valve failed to adequately warn workers and end-users of the dangers posed by asbestos-containing components associated with its products during the period of alleged exposure.

Milwaukee Valve Company has not established an asbestos bankruptcy trust fund. The company has not filed for asbestos-related bankruptcy reorganization, and there is no Milwaukee Valve asbestos trust through which claims can be submitted administratively. Individuals seeking compensation for asbestos-related illness allegedly connected to Milwaukee Valve products must pursue claims through civil litigation in state or federal court.

This distinguishes Milwaukee Valve from a number of other asbestos defendants — such as former gasket and packing manufacturers — that resolved their asbestos liabilities through Chapter 11 bankruptcy and established trust funds to compensate current and future claimants.

Workers who handled Milwaukee Valve products during the 1940s through the early 1980s — particularly those who performed valve repacking, gasket replacement, or steam trap maintenance — and who have since been diagnosed with mesothelioma, asbestosis, lung cancer, or another asbestos-related disease may have legal options worth exploring.

Because Milwaukee Valve has not established an asbestos trust fund, claims involving this company are typically pursued through direct civil litigation. Mesothelioma and asbestos litigation attorneys routinely handle multi-defendant cases, which is significant because most workers were exposed to asbestos from numerous products and manufacturers simultaneously. A Milwaukee Valve claim would ordinarily be pursued alongside claims against other defendants, including gasket and packing manufacturers, insulation suppliers, and other valve makers.

Key steps for affected individuals or their families include:

  • Documenting work history with as much specificity as possible, including employers, job sites, dates, and job duties
  • Identifying specific Milwaukee Valve products encountered on the job — model names, application settings, and the nature of the work performed
  • Consulting an asbestos litigation attorney with experience in valve and industrial equipment cases

Statute of limitations rules vary by state and disease type. Because mesothelioma and other asbestos diseases have long latency periods, many patients receive diagnoses decades after their original exposure. Legal consultation is recommended as early as possible following a diagnosis.