Warren Pumps Asbestos Exposure: Navy Pumps, Gaskets, Packing & Claims
Warren Pumps manufactured pumps used aboard U.S. Navy ships and in other industrial applications. Published federal and state court decisions provide unusually strong evidence that many historical Warren Navy pumps incorporated asbestos-containing internal gaskets and packing. Courts also document Warren supplying spare or replacement asbestos-containing packing and gaskets for some pumps, while distinguishing those materials from external insulation and third-party replacement components.
Warren Pumps LLC continues to appear in asbestos litigation, including federal cases in 2024 and 2026. Historical corporate records identify Warren Pumps as a subsidiary within the former Colfax corporate structure, with IMO Industries associated as its member. No Warren Pumps-specific §524(g) asbestos personal-injury trust was confirmed from the primary SEC and court records reviewed, so this page does not invent a trust percentage, scheduled disease values or trust assets.
🏢 Warren Pumps Company History
Warren Pumps is best documented in asbestos litigation as a manufacturer of pumps built for U.S. Navy vessels. The California Supreme Court described Warren as building pumps for specific Navy ships under stringent naval specifications. Federal records likewise document Warren equipment aboard destroyers and other Navy vessels and describe Navy technical specifications governing pump construction.
Warren Pumps Facts
| Topic | Verified Information |
|---|---|
| Primary historical equipment | Pumps for Navy and industrial fluid-handling applications. |
| Navy role | Built pumps for specific ships according to Navy specifications. |
| Historical asbestos components | Internal gaskets and packing in many documented Navy pumps. |
| Replacement materials | Court records document Warren selling or supplying asbestos-containing replacement gaskets and packing in some circumstances. |
| Historical corporate structure | SEC records identify Warren Pumps LLC within the former Colfax corporate group. |
| IMO relationship | Federal disclosure records identify IMO Industries as Warren Pumps LLC’s member/affiliate. |
| Current asbestos litigation | Warren Pumps LLC continues to appear in asbestos cases. |
| Warren-specific §524(g) trust | No dedicated trust confirmed from the primary records reviewed. |
Historical Pump Applications Documented in Navy Cases
| Pump / Application | Documented Context |
|---|---|
| Fire pumps | Federal litigation documents Warren fire pumps aboard Navy vessels with asbestos gaskets. |
| Bilge pumps | Cases identify Warren bilge pumps aboard destroyers. |
| Condenser circulating pumps | Documented aboard Navy vessels and associated with Warren replacement parts. |
| Steam-propulsion pumps | California Supreme Court describes Warren pumps moving liquids and condensed steam within warship propulsion systems. |
| Other shipboard pumps | Warren supplied multiple pump types built to Navy specifications. |
For related manufacturers, see Industrial Equipment Manufacturers & Asbestos Exposure.
⚙️ Warren Pumps, Asbestos Gaskets & Packing
The California Supreme Court’s O’Neil v. Crane Co. decision states that most Warren pumps at issue had internal gaskets and packing containing asbestos. It also notes that one Warren pump had asbestos insulation around a valve stem under sheet metal. The court distinguished those internal components from external insulation, which Warren did not manufacture or ship with the pumps involved in that case.
Documented Historical Asbestos Components
| Component | Evidence |
|---|---|
| Internal pump gaskets | O’Neil states most Warren pumps at issue contained internal asbestos gaskets and packing. |
| Pump packing | Multiple federal decisions document Warren pumps supplied with asbestos-containing packing. |
| Spare packing | Boyd found evidence that at least some Warren pumps were supplied with spare asbestos packing. |
| Replacement gaskets | Hasenberg and other federal records document Warren selling asbestos-containing replacement gaskets. |
| Replacement packing | Federal records document Warren selling replacement asbestos packing. |
| Valve-stem insulation | O’Neil documents one Warren pump with asbestos insulation around a valve stem beneath sheet metal. |
| External insulation | O’Neil states the Warren pumps at issue were not made or shipped with external insulation. |
| Flange gaskets | Often used to connect equipment into ship piping, but O’Neil states Warren did not manufacture the flange gaskets at issue. |
Important Product Distinctions
| Question | Accurate Treatment |
|---|---|
| Did historical Warren Navy pumps contain asbestos? | Yes, many documented pumps had internal asbestos gaskets and packing. |
| Did every Warren pump contain asbestos? | No universal claim is made; configuration and specifications varied. |
| Did Warren manufacture the asbestos fibers/components itself? | Some court records state Warren purchased asbestos components made by other companies. |
| Did Warren supply asbestos-containing spare parts? | Yes, evidence in multiple cases supports this for certain pumps and Navy applications. |
| Did Warren manufacture all replacement materials? | No. Many replacement gaskets, packing and insulation products were supplied by third parties or the Navy. |
| Did Warren manufacture external pipe insulation? | The O’Neil record states it did not manufacture or supply the external insulation involved there. |
⚓ Navy & Industrial Workers at Risk
The strongest Warren Pumps asbestos evidence concerns Navy engineering personnel who maintained pumps in machinery spaces. Court records identify machinist’s mates, boilermakers and other sailors working around Warren pumps, packing and gaskets. Similar pump-maintenance activities could occur in industrial facilities, but product-specific evidence remains necessary.
Potentially Exposed Worker Groups
| Worker Group | Potential Historical Activity |
|---|---|
| Navy machinist’s mates | Opening pumps, removing packing and replacing gaskets. |
| Navy boilermakers | Repairing boilers and associated pumps and machinery. |
| Enginemen | Maintaining propulsion and auxiliary fluid-handling systems. |
| Shipyard mechanics | Overhauling pumps and replacing internal components. |
| Pipefitters | Disconnecting pumps and working around flange gaskets and insulation. |
| Industrial mechanics | Servicing pumps, seals, packing and gaskets. |
| Maintenance workers | Removing old packing and gasket residue during pump repairs. |
| Nearby trades | Potential bystander exposure during dusty pump maintenance. |
Navy Vessels & Settings Documented in Court Records
| Vessel / Setting | Documented Warren Pumps Connection |
|---|---|
| USS John S. McCain | Boyd found evidence supporting an inference of exposure to asbestos-containing spare packing and gaskets supplied with Warren pumps. |
| USS Gainard | Part of the Navy service history in Boyd. |
| USS Bausell | Hasenberg documents at least nine Warren pumps aboard the vessel and asbestos gaskets in Warren fire pumps. |
| USS Sterett | Hasenberg records Warren supplying the main condenser circulating pump. |
| USS Wilson | Federal litigation documents Warren fire and bilge pumps with asbestos packing and gaskets. |
| USS Rowan | Federal litigation documents Warren pumps in fire rooms and evidence concerning asbestos gaskets, packing and insulation. |
| Puget Sound Naval Shipyard | Federal discovery litigation involves alleged Warren pump exposure during Navy and shipyard overhaul work. |
See U.S. Navy Asbestos Exposure, High-Risk Jobs Asbestos Exposure and Job Site Asbestos Exposure.
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🔧 How Warren Pump Asbestos Exposure Occurred
Pump maintenance could disturb asbestos-containing packing and gaskets. Sailors and mechanics removed old packing from stuffing boxes, opened pump casings, scraped gasket residue and installed replacement sealing materials. Whether Warren is legally responsible can depend on whether the material was original equipment, a Warren-supplied spare or replacement part, or a third-party component installed years later.
Potential Exposure Activities
| Task | Potential Historical Exposure Mechanism |
|---|---|
| Removing pump packing | Old asbestos packing could fragment during extraction. |
| Repacking pumps | Handling and cutting asbestos-containing packing could release fibers. |
| Opening pump casings | Could disturb internal asbestos-containing gaskets. |
| Scraping gasket residue | Hardened gasket material could require scraping or wire brushing. |
| Installing replacement gaskets | Historical Warren or third-party replacement gaskets could contain asbestos. |
| Disconnecting pumps from piping | Could disturb third-party asbestos flange gaskets. |
| Removing external insulation | Could disturb asbestos insulation applied by a shipyard or another manufacturer. |
| Nearby maintenance | Confined machinery spaces could expose nearby workers to dust generated during pump overhaul. |
Asbestos-Related Health Conditions
| Condition | General Relationship to Asbestos |
|---|---|
| Mesothelioma | A rare cancer strongly associated with asbestos exposure; numerous Warren Pumps cases involve mesothelioma. |
| Lung cancer | Occupational asbestos exposure can increase lung-cancer risk. |
| Asbestosis | Progressive pulmonary fibrosis caused by inhaled asbestos fibers. |
| Pleural disease | Asbestos exposure can cause pleural plaques, thickening and other abnormalities. |
A Warren pump aboard a vessel does not by itself prove exposure. The specific pump, asbestos-containing component, maintenance cycle, replacement history, frequency and proximity of work should be established.
⚖️ Warren Pumps Asbestos Litigation & Current Status
Warren Pumps has a substantial asbestos litigation record extending across state and federal courts. Outcomes vary because some cases involve original Warren-supplied asbestos parts, while others involve replacement products supplied by the Navy or unrelated manufacturers years after the pumps were installed.
Current Claim Structure
| Issue | Verified Status |
|---|---|
| Warren Pumps asbestos litigation | Extensively documented in federal and state courts. |
| Recent litigation | Federal decisions in 2024 and a 2026 federal asbestos docket continue to identify Warren Pumps LLC. |
| Warren-specific §524(g) trust | No dedicated asbestos personal-injury trust confirmed from primary records reviewed. |
| Trust payment percentage | Not applicable. |
| Scheduled disease values | Not applicable. |
| Historical insurance/liability accounting | Former Colfax SEC filings discussed Warren Pumps asbestos liabilities and related insurance/coverage litigation. |
| Potential claim route | Individual civil litigation and potentially separate trust claims for independently identified bankrupt asbestos-product manufacturers. |
Key Liability Questions
| Question | Why It Matters |
|---|---|
| Was the asbestos component originally supplied with the Warren pump? | Cases such as O’Neil and Boyd distinguish original components from later replacements. |
| Did Warren supply spare asbestos parts? | Boyd found sufficient evidence for a jury to infer exposure to Warren-supplied asbestos spare parts. |
| Was the component a later third-party replacement? | Some courts have rejected liability where exposure was only to replacement materials made by others. |
| Did Navy specifications require asbestos? | Several cases document stringent Navy specifications and historical asbestos requirements. |
| Was external insulation involved? | External insulation may have been applied by shipbuilders or other companies rather than Warren. |
📊 Documented Warren Pumps Asbestos Cases
The Warren Pumps record is valuable because courts have addressed original asbestos components, spare parts, replacement materials, Navy specifications and claimant-specific exposure in detail.
Selected Court Records
| Case | Documented Significance |
|---|---|
| O’Neil v. Crane Co. (Cal. 2012) | California Supreme Court stated most Warren pumps at issue had internal asbestos gaskets and packing, but ruled manufacturers were not liable for asbestos replacement products made by others under the circumstances presented. |
| Boyd v. Warren Pumps, LLC (9th Cir. 2016) | Ninth Circuit found sufficient circumstantial evidence for a jury to infer exposure aboard USS McCain to asbestos-containing spare packing and gaskets supplied with Warren pumps. |
| Hasenberg (S.D. Ill.) | Record states Warren sold and distributed Navy pumps with asbestos packing and gaskets, sold replacement asbestos gaskets/packing, and supplied at least nine pumps aboard USS Bausell. |
| May v. Air & Liquid Systems Corp. (Md. Ct. Spec. App. 2014) | Record states Warren and other defendants’ pumps contained asbestos gaskets and packing when first delivered to the Navy; claimant encountered later replacement parts made by others. |
| Pruitt v. Air & Liquid Systems Corp. (D. Del. 2020) | Federal court denied Warren Pumps’ summary-judgment motion in a Navy machinist’s-mate mesothelioma action. |
| Smargisso v. Air & Liquid Systems Corp. (N.D. Cal. 2024) | Wrongful-death mesothelioma action involving alleged Navy exposure to Warren equipment; court granted in part and denied in part Warren’s summary-judgment motion. |
Statistics & Claims We Do Not Invent
| Category | Verified Status |
|---|---|
| Total Warren pumps supplied to U.S. Navy | No authoritative company-wide total confirmed from the primary records reviewed. |
| Total Warren workers/sailors exposed | No reliable nationwide total confirmed. |
| Every Warren pump contained asbestos | Not claimed; configurations and specifications varied. |
| Total Warren asbestos lawsuits | No authoritative current cumulative total confirmed. |
| Warren Pumps trust assets | Not applicable; no Warren-specific §524(g) trust confirmed. |
| Guaranteed claim value | None. Civil claims depend on individual evidence and applicable law. |
📋 Warren Pumps Claim Evidence & Product Identification
A Warren Pumps asbestos investigation should identify the vessel or worksite, specific pump and component whenever possible. Navy equipment records, ship drawings and maintenance evidence can be particularly important because Warren built pumps to ship-specific Navy requirements.
Evidence That May Help Document Exposure
- Medical documentation establishing an asbestos-related disease.
- Navy service, ship assignment and rate/rating records.
- Ship equipment lists and machinery records identifying Warren pumps.
- Warren pump drawings, manuals, specifications and parts lists.
- Navy procurement records and invoices for Warren pumps or replacement parts.
- Maintenance and overhaul records identifying pump servicing dates.
- Evidence identifying asbestos-containing packing or gaskets.
- Evidence distinguishing original Warren parts, Warren-supplied spares and third-party replacements.
- Shipmate or coworker testimony describing pump maintenance and dust-producing tasks.
- Shipyard records documenting overhaul, insulation removal or component replacement.
Product-Identification Checklist
| Step | Question |
|---|---|
| 1 | Was Warren Pumps equipment installed aboard the claimant’s vessel or at the worksite? |
| 2 | What type and model of Warren pump was involved? |
| 3 | Did its original configuration include asbestos-containing packing or gaskets? |
| 4 | Was the claimant present during maintenance or overhaul? |
| 5 | Was the disturbed material original, Warren-supplied replacement material or a third-party product? |
| 6 | How frequently and closely did the claimant work around the pump? |
| 7 | Are separate asbestos trust claims available for independently identified bankrupt component manufacturers? |
Compensation is not guaranteed. Eligibility and value depend on product identification, exposure evidence, disease, jurisdiction, filing deadlines and applicable law.
❓ Frequently Asked Questions
Did Warren Pumps contain asbestos?
Many historical Warren Navy pumps contained asbestos-containing internal gaskets and packing. The California Supreme Court specifically stated that most Warren pumps involved in O’Neil had such internal asbestos components.
Did Warren supply asbestos replacement parts?
Yes, published federal records document Warren selling or supplying asbestos-containing replacement gaskets and packing in certain Navy applications.
Were Warren pumps used aboard U.S. Navy ships?
Yes. Numerous court decisions identify Warren pumps aboard Navy vessels, including USS John S. McCain, USS Bausell, USS Sterett, USS Wilson and USS Rowan.
How could sailors be exposed while working on Warren pumps?
Maintenance could involve pulling old packing, opening pump casings, scraping gasket residue, repacking pumps and replacing gaskets. These activities could create dust when the historical components contained asbestos.
Did Warren manufacture all asbestos products used with its pumps?
No. Court records distinguish Warren-supplied components from asbestos insulation, flange gaskets and replacement materials supplied by the Navy or other manufacturers.
Does Warren Pumps have an asbestos bankruptcy trust?
No Warren Pumps-specific §524(g) asbestos personal-injury trust was confirmed from the primary SEC and court records reviewed.
Is Warren Pumps still involved in asbestos litigation?
Yes. Warren Pumps LLC continued to appear in federal asbestos litigation in 2024 and is named in a federal asbestos action filed in 2026.
What evidence may support a Warren Pumps asbestos claim?
Navy service records, vessel equipment records, Warren pump drawings, procurement documents, maintenance records, component identification, medical records and credible shipmate testimony may help establish product-specific exposure.
🧾 Warren Pumps Summary
| Detail | Confirmed Information |
|---|---|
| Primary historical equipment | Navy and industrial pumps |
| Documented asbestos components | Internal gaskets and packing; certain spare and replacement gaskets/packing |
| Navy use | Extensively documented in federal and state asbestos litigation |
| Original equipment evidence | O’Neil states most Warren pumps at issue had internal asbestos gaskets and packing |
| Spare-parts evidence | Boyd supports inference that at least some Warren pumps were supplied with asbestos-containing spare packing/gaskets |
| Replacement-parts evidence | Federal records document Warren sales of asbestos-containing replacement gaskets and packing |
| External insulation | Could be supplied/applied by third parties; O’Neil states Warren did not supply external insulation involved there |
| Current litigation | Warren Pumps LLC continues to appear in asbestos cases |
| Warren-specific asbestos trust | No dedicated §524(g) trust confirmed |
| Trust payment percentage | Not applicable |
| Nationwide exposure total | No reliable total confirmed |
📚 Confirmed Primary & Court Sources
- California Supreme Court — O’Neil v. Crane Co., documenting Warren Navy pumps with internal asbestos-containing gaskets and packing and distinguishing third-party replacement products.
- U.S. Court of Appeals for the Ninth Circuit — Boyd v. Warren Pumps, LLC, finding sufficient evidence for a jury to infer exposure to Warren-supplied asbestos-containing spare packing and gaskets aboard USS John S. McCain.
- U.S. District Court — Hasenberg, documenting Warren pumps, asbestos-containing gaskets and packing, replacement parts and equipment aboard USS Bausell and USS Sterett.
- Maryland Court of Special Appeals — May v. Air & Liquid Systems Corp., documenting original asbestos gaskets and packing in Navy pumps and distinguishing later third-party replacement components.
- U.S. District Court for the District of Delaware — Pruitt v. Air & Liquid Systems Corp., addressing Navy machinist’s-mate asbestos exposure and denying Warren’s summary-judgment motion.
- U.S. District Court for the Northern District of California — Smargisso v. Air & Liquid Systems Corp., 2024 Navy mesothelioma litigation involving Warren Pumps.
- U.S. Securities and Exchange Commission — historical Colfax filings identifying Warren Pumps LLC within the corporate group and discussing Warren asbestos liability and coverage litigation.
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Call 800.291.0963
Live chat is available 24/7, 365 days a year.
Submit Your Case
Working around a Warren pump does not automatically establish asbestos exposure, disease causation, legal liability or compensation. The vessel or worksite, pump type, asbestos-containing component, original or replacement status, maintenance activity, exposure history, medical evidence and applicable law must be evaluated individually. Compensation is not guaranteed.
⚕️ Legal & Medical Information Disclaimer
This page provides general educational information and is not legal or medical advice. Consult a qualified healthcare professional about diagnosis and treatment and a qualified attorney about individual legal rights and filing deadlines.