The Hidden Dangers for Pipefitters and Steamfitters

If you spent a career as a pipefitter or steamfitter, asbestos was not something you encountered occasionally. It was one of the defining materials of your trade.

From the 1930s through the early 1980s, asbestos was embedded in virtually every system you worked with. Pipe insulation was wrapped in asbestos-containing material. Gaskets sealing joints and flanges were made of asbestos. Valve packing that sealed valve stems against pressure used asbestos-compressed materials. The boilers, the turbines, and the industrial piping systems that pipefitters and steamfitters installed and maintained were essentially asbestos delivery systems.

The result is that pipefitters and steamfitters have some of the highest documented rates of mesothelioma of any skilled trade. And because asbestos-related disease typically takes 20 to 50 years to manifest, many workers who spent their careers in the 1950s, 1960s, and 1970s are only now receiving diagnoses.

The Specific Products That Caused the Exposure

Understanding which products you worked with is critical for identifying the companies that bear legal responsibility for your diagnosis. Here are the most common asbestos-containing materials in the pipefitting and steamfitting trades:

Pipe Insulation and Lagging

Asbestos was the preferred material for insulating steam and hot water pipes in industrial, commercial, and residential systems. It was applied as a rigid pre-formed covering, as a flexible wrap, or as a mixed compound applied wet and smoothed onto the pipe before hardening.

When this insulation aged, it became brittle. Cutting sections of old insulation for repairs or replacements, or simply working around deteriorating pipe covering, released clouds of asbestos dust. Insulation mixing, where dry asbestos-containing powder was combined with water on-site, was particularly hazardous.

Major manufacturers of asbestos pipe insulation included:

• Owens Corning Fibreboard (trust fund established)
• Armstrong World Industries (trust fund established)
• W.R. Grace (trust fund established)
• Johns Manville (trust fund established)
• Numerous regional manufacturers

Gaskets and Gasket Materials

Gaskets used at flanged pipe connections, heat exchangers, and process equipment were made from compressed asbestos fiber board or asbestos-reinforced materials. When these gaskets degraded and were removed during maintenance, they crumbled and released fibers. When new gaskets were cut to size, the cutting tools produced fine asbestos dust.

Pipefitters and steamfitters who regularly removed and replaced flanged connections, serviced heat exchangers, or worked on steam systems encountered gasket exposure day after day across their entire careers.

Valve Packing

The packing material used to seal valve stems against pressure was almost universally asbestos-based in the industrial systems of this era. Repacking valves, a routine maintenance task, required removing old packing material, which often crumbled, and inserting new asbestos rope packing. The old material released fibers during removal; the new material released fibers during installation.

Companies that manufactured valve packing products include Garlock (which has an asbestos trust fund), A.W. Chesterton, and many others.

Asbestos Cement Pipe

Asbestos cement pipe was widely used for drainage, sewer, and process water applications. Cutting, drilling, or breaking this pipe released high concentrations of fibers.

Why Pipefitters Face Particularly High Exposure

Several features of the trade created especially severe exposure conditions:

Confined spaces. Much pipefitting and steamfitting work occurs in mechanical rooms, boiler rooms, and equipment spaces with limited ventilation. Fibers released in these environments have nowhere to go and remain suspended in the air at high concentrations for extended periods.

Repetitive maintenance. Unlike a one-time construction exposure, the maintenance cycle of industrial pipe systems meant returning to the same asbestos-containing systems repeatedly throughout a career. Each visit to repack a valve or replace a gasket was another exposure event.

Simultaneous trades. Industrial facilities typically had multiple trades working in close proximity. Even when a pipefitter was not personally disturbing asbestos, nearby insulators or construction workers releasing asbestos fibers created bystander exposure. Automotive mechanics faced similar cumulative exposure patterns through repeated contact with asbestos brake and clutch components, a situation we cover in detail in our article on brake mechanics and mesothelioma.

No protective equipment. Respiratory protection was rarely provided and even more rarely used on industrial job sites before safety regulations changed in the late 1970s and 1980s. Workers were not told they needed it.

Identifying Defendants for Your Claim

The legal strength of a pipefitter mesothelioma case depends on identifying which companies made the specific products that caused the exposure. An experienced mesothelioma attorney will analyze:

• The facilities where you worked and during what time periods
• The piping systems you maintained (steam, process, HVAC, etc.)
• The specific products that were commonly used in those facilities and systems
• Your union membership and journeyman records, which can help document work sites and years of exposure
• Any product specification records from facilities where you worked

Many of the companies responsible for pipefitter asbestos exposure have established bankruptcy trust funds. Filing claims with these trusts is often possible in addition to filing lawsuits against non-bankrupt companies.

The Role of Union Membership in Building Your Case

If you were a union pipefitter or steamfitter, your union records can be a valuable source of documentation. Union records often show which job sites members were dispatched to and during which periods. These records can help reconstruct an exposure history that would otherwise be difficult to document after decades have passed.

Some union pension records and apprenticeship programs also maintain historical records that can be useful in establishing when and where members worked.

Getting Help

If you are a pipefitter or steamfitter who has been diagnosed with mesothelioma, your exposure history is likely extensive enough to involve multiple defendants and multiple trust fund claims. The cumulative compensation from a thorough case, including both lawsuit settlements and trust claims, can be significant. Workers in the industrial South, particularly in Alabama's steel and manufacturing corridor, often have exposure histories that span multiple facilities and decades; our article on shipyard and industrial exposure sites in Birmingham covers how those cases are built.

The mesothelioma attorney directory at Attorney4Mesothelioma includes attorneys who specialize in trade-related asbestos exposure cases, with listings in major industrial cities including Birmingham, Alabama, Chicago, and Sacramento.

This article is for informational purposes only and does not constitute legal advice. Asbestos litigation is complex and highly fact-specific. Consult a qualified mesothelioma attorney to evaluate your specific exposure history and identify appropriate defendants.