William Powell Valves Asbestos Exposure and Mesothelioma Claims

By David Meldofsky, California-licensed attorney · Founder, Lawsuit Informer

Last updated: October 6, 2026

The Wm. Powell Company has made industrial valves in Cincinnati since 1846 and still does. For roughly four decades its valves were supplied with asbestos packing and gaskets that Powell itself did not manufacture. There is no Powell asbestos trust, and that sourcing detail, rather than the exposure itself, is what these cases turn on.

Powell is worth understanding closely because its litigation history is unusually well documented and unusually instructive. The company has fought these cases hard and won a large share of the reported rulings. It usually wins on one of two grounds. Either the worker could not place himself at a Powell valve, or the asbestos that hurt him was another company's product. Understanding how those two defenses work is the difference between a claim that survives and one that does not.

Company Background

The Wm. Powell Company was founded in Cincinnati, Ohio in 1846 and incorporated in Ohio in 1886. It has always been privately owned. It still makes bronze, iron, and steel industrial valves under the Powell Valves name, for refining, petrochemical, pulp and paper, power, and industrial gas customers.

Beginning in the late 1940s, Powell sold metal valves together with asbestos gaskets and packing to the United States Navy. Testimony in lawsuits has described the company supplying other makers' asbestos gaskets and packing with its valves from the late 1940s until 1991. It also sold replacement asbestos gaskets and packing. It got relatively few replacement orders, because buyers usually got those parts more cheaply from the gasket and packing makers. No asbestos warnings were placed on the valves.

Powell sold a metal product with another company's asbestos inside it and another company's asbestos wrapped around it. That pattern is why Powell shows up in so many appeals court decisions for a company its size.

How Asbestos Exposure Happened Around Powell Valves

Stem packing. Braided asbestos packing sealed the valve stem in the stuffing box. Repacking meant hooking out the compressed rings and cutting fresh ones from coil stock, which produced dust in the worker's breathing zone at both ends of the job.

Bonnet and flange gaskets. Sheet gaskets sealed the bonnet to the body and the valve to the pipe. Removing one that had been under heat and pressure meant scraping and wire brushing, and the replacement was cut from asbestos sheet stock.

External insulation. Valves on steam service were covered with insulation fabricated and applied by others, including the Navy aboard ship. A worker servicing the valve had to strip that covering first.

Replacement parts. Because packing and gaskets are consumables, the material disturbed decades after installation was frequently not the material originally supplied. Who made the replacement, and whether the valve maker answers for it, is the contested question in most of these cases.

Where the Case Is Filed Changes the Answer

Three jurisdictions have taken meaningfully different positions on whether an equipment manufacturer answers for asbestos components supplied by others, and Powell has litigated in more than one of them.

California is restrictive. The leading Powell case was brought by a Navy veteran who served from 1946 to 1968, repairing shipboard propulsion and heating systems. He was diagnosed with lung cancer in 2005 and sued Powell and about forty-five other companies. The jury found Powell twenty-five percent at fault. It awarded about $562,000 in economic damages, $20 million in noneconomic damages, and $500,000 for loss of consortium. The judgment against Powell came to about $5.66 million.

In 2010, the California Court of Appeal reversed in a published decision and ordered judgment for Powell. It applied the component parts rule. Under that rule, the maker of one part is liable for a design defect only in two cases. Either its part was itself defective, or it played a major role in building the part into the finished product. Powell made the metal valves but not the gaskets, the packing, or the outside insulation the Navy added. It had no role in designing the ship systems.

Two years later, the California Supreme Court decided O'Neil v. Crane Co. It held more broadly that a maker generally is not liable for harm caused by another maker's product. The exceptions are when its own product contributed substantially to the harm, or it played a substantial part in creating a harmful combined use.

New York is friendlier to claimants on duty to warn, within limits. In the Dummitt decision in 2016, New York's highest court held that a maker can owe a duty to warn about using its product together with another company's product. The use must be known and reasonably foreseeable. The other product must also be needed, by design, mechanics, or economics, for the maker's product to work as intended. That standard is friendlier to claimants than California's.

It did not save a Powell claim brought by a man who developed peritoneal mesothelioma after salvaging scrap metal from steam systems in empty buildings in the 1980s. The First Department reversed in 2015. Even assuming the valves were badly designed, it said, taking them apart for scrap was neither their intended use nor a reasonably foreseeable one.

Federal maritime law sits between them. In 2019, the Supreme Court decided a case over Navy pump equipment. It held that a maker has a duty to warn when three things are true. Its product needs a dangerous part added. The maker knows the finished product is likely to be dangerous for its intended uses. The maker also has no reason to think users will realize the danger.

That decision is discussed on our page about Buffalo Pumps asbestos claims. It matters here because shipboard exposure claims are often governed by maritime law, rather than by the law of the state where the veteran later settled.

None of this decides an individual case, and these standards continue to develop. The practical point is narrower. In a claim built around valve packing and gaskets, where the case can be brought can change the result. It is worth raising with a lawyer early.

Powell in Asbestos Litigation

The second defense, and the one that decides more cases than any doctrine, is simpler: proving the claimant actually worked with a Powell valve. Two decisions show the line.

Where proof of the valve held up. A man died of Stage IV lung cancer, and his family sued in New York. Powell asked the court to end the case before trial. It argued he had denied working with its valves several times in his deposition. The court read the transcript and found he had in fact identified Powell asbestos valves. He placed them at the Kips Bay steam generating station and the Astoria and Ravenswood generating stations. The court refused to end the case.

Where it did not. A federal court in North Carolina ended a refinery case in Powell's favor before trial. The plaintiffs' only witness testified that Powell valves were all over the plant and made up about ten percent of its valves. No one testified to seeing the worker on or near one. Valves being everywhere did not prove he worked on one.

That contrast is the practical lesson of the Powell record. The valves were everywhere, which means almost any industrial or shipboard work history is consistent with exposure, and courts have been clear that consistency is not proof. Naming co-workers who can place you at specific equipment matters more in a Powell case than in most.

On funding, a 2013 insurance coverage ruling held that asbestos suits against the company were each covered under its policies. That is the mechanism standing in for a trust here: historic liability insurance, litigated between the company and its carriers, rather than an administrative claims facility.

One date matters because it marks the outer edge of these claims. Powell has said in court that it first learned of asbestos hazards in the mid-1980s. It says it began phasing asbestos out of its products in 1987.

The Cincinnati Plants and Plant-Worker Claims

A separate group of claimants worked at Powell rather than on its products. The company has run plants in Cincinnati for well over a century. Former employees have described asbestos insulation and materials throughout those plants. They also describe the foundry, machining, and assembly work that made the valves, and the packing and gasket work on the line.

Plant claims are proved differently. Exposure is tied to one employer and one address, which usually makes the story simpler. It also raises separate questions. One is which claims are still available against an employer. Another is which suppliers provided the materials used inside the plant.

Jobs and Sites Often Involved

• Navy machinist's mates, boiler tenders, enginemen, and shipyard workers, covered further in asbestos exposure in shipyards and naval service
• Steamfitters and pipefitters, covered in asbestos exposure among pipefitters and steamfitters
• Refinery, petrochemical, and chemical plant maintenance crews
• Pulp and paper mill and power generation maintenance workers, covered in asbestos exposure in power plants and refineries
• Millwrights and machinists, covered in asbestos exposure in millwright and machinist work
• Boilermakers and industrial mechanics
• Powell production workers at the Cincinnati facilities

There Is No William Powell Asbestos Trust

Powell did not reorganize in bankruptcy over asbestos. It belongs with Goulds Pumps, Crane Co., Jenkins Bros., Buffalo Forge, and A.O. Smith in the category of solvent defendants litigated in tort rather than paid administratively through a trust.

The consequences are the same across that group. The deadline is the statute of limitations in the state where the lawsuit is filed. No trust filing rule applies. The case involves gathering evidence, depositions, and expert proof.

The lawsuit usually runs alongside trust claims against the bankrupt companies that made the packing, gaskets, and insulation installed on the equipment. Our guide to asbestos trust funds and claims explains that side. In a Powell case, the two almost always go together, since the asbestos was generally another company's product to begin with.

Illnesses Discussed in These Cases

• Pleural mesothelioma, the cancer of the lining of the lung most closely associated with asbestos exposure
• Peritoneal mesothelioma, which arises in the lining of the abdomen
• Asbestos-related lung cancer, which appears frequently in the Powell record and is regularly contested on causation where there is a smoking history
• Asbestosis and pleural disease, which are scarring conditions rather than cancers

Records That Help Support a William Powell Claim

• Military service records, including ship assignment histories and rating, for Navy claims
• Social Security earnings statements, which establish employer names and date ranges when nothing else survives
• Union records for steamfitter, pipefitter, boilermaker, and machinist locals
• Equipment specifications, valve schedules, and purchase orders naming manufacturers
• Maintenance and repair logs from ships, refineries, mills, and plants
• Employment and personnel records for claims arising from the Cincinnati facilities
• Co-worker names and contact information
• Medical records establishing the diagnosis, including pathology

Our guide to asbestos records that help support a claim covers how to request each of these. The guide also covers service and government records that no employer keeps.

Frequently Asked Questions

Is there a William Powell asbestos trust fund?

No. The Wm. Powell Company did not reorganize in bankruptcy over asbestos and has no section 524(g) trust. It is a privately held company that still manufactures valves in Cincinnati. Claims are brought as lawsuits and resolved through settlement or verdict, funded by the company and its historic liability insurance.

Which Powell valves contained asbestos?

The asbestos was generally in the packing around the valve stem and in the gaskets at the bonnet and flange connections rather than in the metal valve body. Testimony in lawsuits places the practice from the late 1940s into the 1980s. The company supplied other makers' asbestos gaskets and packing with its valves, and sold replacement parts too.

Why does the state where the case is filed matter so much here?

The central question in a Powell case is whether a valve maker answers for asbestos parts another company made. California is strict on that question after O'Neil v. Crane Co. in 2012, and a California appeals court reversed a multimillion-dollar Powell judgment in 2010. New York is friendlier to claimants after the Dummitt case in 2016. Federal maritime law sits between them after Air and Liquid Systems Corp. v. DeVries in 2019. The same work history can produce different results depending on where the case is properly brought.

Does Navy service change the analysis?

Often, yes. Powell supplied valves for shipboard propulsion and heating systems. The Navy or its contractors usually applied the outside insulation on those systems. Shipboard exposure claims may be governed by federal maritime law, where the DeVries test applies, instead of the law of the state where the sailor now lives.

Can former Powell plant workers bring claims?

Yes, and they are a separate category from product users. The company has run plants in Cincinnati for well over a century. Former employees have brought claims describing asbestos insulation and materials throughout those plants and in the manufacturing work itself.

Can I still bring a claim if the exposure happened decades ago?

Often yes. In most states, the filing clock for an asbestos claim starts at diagnosis rather than at exposure. Mesothelioma and other asbestos diseases take decades to appear. The exact deadline depends on the state, the disease, and whether the claim is brought by the injured person or by surviving family.

What if I worked around Powell valves and other equipment too?

That is the normal pattern rather than a problem. Asbestos complaints routinely name dozens of defendants, and in Powell's own reported litigation the company has been the last one left at verdict after the others resolved. Identifying every source usually increases the available recovery, and some of those sources are bankrupt companies with trusts that pay separately from the lawsuit.

Can family members bring a claim after a loved one has died?

Often yes. Wrongful death claims can be brought by the estate or surviving family members. The filing deadline for those claims generally runs from the date of death rather than the date of diagnosis. The rules vary by state, which is one reason timing matters in these cases.

Related Asbestos Guides

About the Author

David Meldofsky is a California-licensed attorney and the founder of Lawsuit Informer, an educational platform focused on helping people understand lawsuits, consumer safety issues, and legal rights related to defective products and toxic exposures.

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Last Updated: October 6, 2026

Educational information only. Not legal advice. No attorney-client relationship is formed.