Industrial Valve Manufacturing (United States) — NAICS 332911

An investor's primer. Figures are reported facts with citations; statements about the future are labeled as expectations or judgments.

1. Overview

A valve is a pressure-containing mechanical assembly that isolates, redirects, prevents reverse flow, relieves excess pressure, or modulates the flow of liquids, gases, steam, and slurries through pipes [1]. Almost nothing that moves through a pipe — crude oil, natural gas, water, chemicals, refrigerant, reactor coolant — does so without valves. NAICS (North American Industry Classification System) code 332911 covers U.S. plants that make industrial valves: gate, globe, ball, butterfly, plug, check, control, safety, solenoid, and relief valves, as well as steam traps, complete fire hydrants, and valves for nuclear applications — for pipelines, refineries, power plants, chemical plants, and municipal water systems [2].

Why an investor should care: this is a classic "picks-and-shovels" business. You are not betting on any one commodity price; you are betting on the building and maintaining of energy, water, power, and chemical infrastructure. The most attractive economics come from the aftermarket — the sticky, recurring, high-margin replacement and repair business tied to a huge installed base — rather than from one-time equipment sales.

There is no large, pure-play "industrial valve" stock in the United States. Public-market investors get exposure through diversified flow-control and industrial companies where valves are one segment (Emerson, Flowserve, Crane, Curtiss-Wright, ITT, Mueller Water Products, Baker Hughes). Private investors are arguably closer to the core: much of the industry is privately held or private-equity-owned (Bray International, CIRCOR under KKR, DeZURIK under Granite Equity Partners), and the most repeatable private opportunities are in valve distribution and valve repair/service. Tickers, valuations, and specific routes appear in sections 4 and 10.

2. What it is and how it's structured

Scope (what's in 332911). Establishments primarily engaged in manufacturing industrial valves and valves for water works and municipal water systems — including gate, globe, ball, butterfly, plug, check, control, safety, solenoid, and relief valves, steam traps, complete fire hydrants, and valves for nuclear applications [2].

What it excludes (and the adjacent codes). The Census draws sharp lines that matter when you read industry data:

• Fluid-power valves (hydraulic/pneumatic valves used inside machinery) → NAICS 332912, Fluid Power Valve and Hose Fitting Manufacturing [2].
• Plumbing and heating in-line valves (residential/commercial faucets, radiator valves, and the like) → NAICS 332919, Other Metal Valve and Pipe Fitting Manufacturing [2].
• Valve wholesaling/distribution is a separate trade sector, not manufacturing — even though distribution and repair are where a lot of the industry's cash is actually made.

So a company like Watts Water Technologies (largely plumbing/HVAC flow control) sits mostly outside 332911, while Flowserve's isolation and control valves for refineries sit squarely inside it.

Manufacturing process. Manufacturers typically buy or produce cast or forged bodies, machine pressure boundaries and sealing surfaces, install stems, discs or balls, seats, packing and gaskets, add manual gearing or pneumatic/electric/hydraulic actuation, and then inspect and pressure- and leakage-test the completed assembly. Material selection ranges from cast iron and carbon steel to stainless, nickel alloys, and fluoropolymers depending on pressure, temperature, corrosion, and fugitive-emissions requirements. Flowserve lists ferrous and non-ferrous bar stock, machined castings, forgings, fasteners, motors, gaskets, carbon faces, and fluoropolymer components as principal inputs; it buys castings from qualified foundries while retaining some strategic casting capacity internally [3].

Specification-led sales. The commercial process is often specification-led rather than catalog-led. End users and engineering, procurement, and construction contractors specify valve type, pressure class, materials, trim, actuator, leakage standard, documentation, and inspection. Suppliers must obtain approved-vendor status and maintain material traceability and testing records. ASME B16.34 covers pressure-temperature ratings, materials, dimensions, nondestructive examination, testing, and marking for many industrial valves [4]. Municipal products are commonly specified to AWWA standards such as C504 for rubber-seated butterfly valves and C509 for resilient-seated gate valves [5].

Ownership mix. Three layers: (1) segments of large diversified U.S. multinationals (Emerson, Flowserve, Baker Hughes, Crane, Curtiss-Wright, ITT); (2) large privately held specialists (Bray International in Houston; DeZURIK under Granite Equity Partners [6], Val-Matic, and others in waterworks); and (3) private-equity-owned platforms (KKR's CIRCOR) plus a long tail of small regional machine-shops and foundries. Foreign majors — IMI and Rotork (UK), Weir (UK), Valmet (Finland, which acquired ValvTechnologies in 2026 [7]), KITZ (Japan), Samson (Germany), AVK (Denmark) — also supply the U.S. market.

3. How big it is

Federal statistics for the U.S. domestic manufacturing side of NAICS 332911:

For context, private market-research firms put the broader U.S. industrial valve market (consumption, which includes imports and installed-and-serviced product) at roughly $15 billion in 2024, growing about 4–5% a year [11], and the global valve market near $90 billion [12]. The federal $14.28 billion is U.S. factory shipments — a narrower, production-based number.

Undercount caveat (important). The 332911 statistics understate how big this business is for an investor in three ways. First, they count only U.S.-domestic plants primarily classified as valve makers — a large share of valves consumed in the U.S. is imported, and much domestic valve output is made inside multinationals whose plants are scattered across many countries and NAICS codes. Second, they capture manufacturing only: the high-margin aftermarket service, repair, and distribution economy that surrounds valves is booked elsewhere. Third, the industry's public "owners" (Emerson, Flowserve, Baker Hughes) are far larger than the domestic-only figures suggest — Emerson's valve segment alone books about $4.4 billion a year worldwide (section 4). Read 332911 as the U.S. production core, not the full economic footprint.

4. The investable universe

There is no scaled U.S.-listed pure-play in industrial valves. Public exposure comes through diversified companies; valves are a segment, not the whole company. Scale figures below are the most recent reported; where valves are only part of the business, that is flagged.

Foreign-listed majors: IMI plc and Rotork plc (London), Weir Group (London), Valmet (Helsinki, which completed its acquisition of severe-service specialist ValvTechnologies on July 1, 2026 [7]), KITZ (Tokyo).

Distribution exposure: Core & Main (CNM) reported that pipes, valves, and fittings represented approximately 67% of fiscal-2025 sales, though it does not separately disclose valve economics and carries substantial exposure to pipe, storm drainage, and other waterworks products outside a narrow valve definition [20].

Major private / other owners: Bray International (Houston; butterfly, ball, knife-gate valves and actuators) [21]; CIRCOR International, taken private by KKR for about $1.7 billion in 2023 [22]; DeZURIK (waterworks and process valves, majority-owned by Granite Equity Partners [6]); Val-Matic (waterworks, private); plus the recently traded Trillium Flow Technologies valves division (nuclear/power), bought by Flowserve in 2026 (section 8).

Bottom line for stock pickers: Flowserve is the closest thing to a flow-control pure-play; the others are ways to add valve exposure inside a broader industrial or energy holding.

5. How the money works

Valve makers earn money in two very different modes, and the mix is what separates good returns from mediocre ones.

• Original equipment (OE), or "project," sales. Valves specified into a new refinery, LNG (liquefied natural gas) terminal, power plant, or water system. This is lumpy and cyclical — it rises and falls with industrial and energy capital spending — and it is competitively bid, so margins on commodity valves are thin. Bookings and backlog (orders not yet shipped) and the book-to-bill ratio (orders divided by sales) are the leading indicators investors watch here. Flowserve's disclosures emphasize that accepting low-quality backlog can damage earnings even when reported orders are strong — selective bidding matters [3].
• Aftermarket / MRO (maintenance, repair, and overhaul). Once a valve is installed, it wears, leaks, and must be repaired or replaced on the operator's schedule, not the market's. This revenue is recurring, higher-margin, and stickier, and it grows with the installed base. Industry estimates put the replacement/MRO cycle at roughly 50–55% of annual valve demand, with new-project volume adding 20–25% in peak years and the rest from turnarounds and spares [23]. Aftermarket is the profit engine and the main reason the diversified leaders earn mid-teens-to-20%+ segment margins while commodity makers earn far less.

Levers that drive profitability:

• Product mix. "Severe-service" and engineered valves (high pressure, high temperature, corrosive or cryogenic media, nuclear-qualified) command real pricing power. Commodity ball and gate valves do not. The public-company results illustrate the range: Flowserve's valve division reported an 11.9% operating margin, Crane's broader process-flow segment reported 21.0%, and Mueller's water-flow unit disclosed a 35.9% gross margin [3][14][17]. Differences in product mix, geographic scope, acquired intangible amortization, and segment overhead prevent a clean comparison.
• The installed base and "spec-in." Getting a valve onto an operator's or engineering contractor's approved-vendor list creates switching costs and pulls decades of aftermarket demand. This is the industry's main moat.
• Input costs. Cost of goods is dominated by steel, stainless, nickel alloys, bronze, and castings/forgings. Margins swing with metal prices and with the ability to pass them through. Crane reported that higher material, labor, and other manufacturing costs, including tariffs, increased 2025 Process Flow Technologies cost of sales, while productivity, pricing, and cost savings offset much of the pressure [14]. Mueller similarly attributed 2025 results to higher volume, pricing, and manufacturing efficiencies, partially offset by inflation and tariffs [17].
• Factory utilization and working capital. Castings and forgings are long-lead items; inventory and utilization drive returns.
• Cyclicality, cushioned. OE swings with capex; the aftermarket cushions downturns because plants must keep running safely regardless of the capex cycle.

6. What drives demand

Valve demand tracks capital spending and maintenance across a handful of large end markets, plus the steady replacement cycle. VMA's 2020 forecast illustrates the diversity: chemicals represented 17.9% of forecast shipments, water and wastewater 16.3%, petroleum production 13.1%, power generation 11.7%, refining 11.3%, and oil and gas transmission 6.4% [24]. These percentages are a 2020 forecast rather than a current mix, but they show why "industrial valves" should not be treated as a pure oil-services industry. Flowserve's 2025 bookings were split among energy at 32%, chemical at 27%, general industries at 25%, and power generation at 16% [3].

• Oil, gas, and petrochemicals. Upstream, midstream (pipelines), and downstream (refining, chemicals) are the biggest single driver. API-rated pipeline and severe-service valves live here.
• LNG export. Each Gulf Coast liquefaction terminal needs thousands of cryogenic ball valves, safety-relief valves, and automated control valves. U.S. LNG export capacity reached roughly 15 billion cubic feet per day in 2025 and is expanding as new terminals start up [23] — a multi-year valve tailwind (expected).
• Power generation. Gas-fired power to feed data-center load growth; nuclear life-extension — subsequent license renewals stretching plant licenses from 60 to 80 years require safety-valve replacement and requalification [25] — plus new small modular reactors (SMRs). Nuclear valves are high-value and heavily qualified.
• Water and wastewater. Municipal distribution, treatment, and desalination drive butterfly, gate, and check valves. The Infrastructure Investment and Jobs Act provides more than $50 billion through EPA for drinking-water, wastewater, and stormwater infrastructure [26]. Build America, Buy America (BABA) requirements favor domestic production in federally assisted projects [27], though funding authorization is not the same as valve revenue and project conversion occurs over several years.
• Chemicals, semiconductors, and reshoring. New fabs and chemical plants; note ultra-high-purity/process valves for fabs often straddle the fluid-power line (332912).
• Decarbonization. Hydrogen, carbon capture (CCUS), and electrification projects are valve-intensive and a potential long-run source of demand (expected).
• The replacement cycle itself. The single most reliable demand source — plants must maintain safe, code-compliant valves continuously.

7. Regulation

Valves are governed less by a single agency than by a dense web of product standards that buyers treat as mandatory, plus safety and trade rules:

• Design and testing standards. The American Petroleum Institute (API) sets the core specs — API 6D (pipeline valves), API 600/602 (steel gate valves), API 598 (inspection/testing) — while ASME B16.34 (American Society of Mechanical Engineers) governs pressure-temperature ratings, materials, dimensions, nondestructive examination, testing, and marking [4][28]. A valve without the right monogram often cannot be sold into a given service. Municipal products are commonly specified to AWWA standards such as C504 for rubber-seated butterfly valves and C509 for resilient-seated gate valves [5].
• Fugitive-emissions ("low-E") standards. API 622/624/641 (and ISO 15848) certify how little a valve leaks to atmosphere, tested against EPA (Environmental Protection Agency) Method 21 with a typical 100 parts-per-million allowable limit [29]. Tightening EPA methane and volatile-organic-compound rules (leak detection and repair, or LDAR) turn regulation into a demand driver for certified low-emission valves. EPA's methane rules for new and existing oil and gas sources address fugitive emissions and increase the value of reliable low-emission components, inspection, and repair [30].
• Pressure and nuclear codes. The ASME Boiler and Pressure Vessel Code governs pressure relief; nuclear valves require ASME Section III qualification and Nuclear Regulatory Commission (NRC) oversight — a high, costly barrier to entry that protects incumbents like Curtiss-Wright and Flowserve.
• Process-safety and worker rules. OSHA (Occupational Safety and Health Administration) Process Safety Management rules make code-compliant relief and safety valves non-negotiable at hazardous facilities.
• Water and "Buy America." Drinking-water valves must meet NSF/ANSI 61 and lead-free requirements (Reduction of Lead in Drinking Water Act); federally funded water projects carry Build America, Buy America (BABA) domestic-content rules that favor U.S. valve makers — a structural advantage for the waterworks players [27].
• Trade policy. Section 232 steel/aluminum tariffs, Section 301 China tariffs, and antidumping duties on certain valves and castings raise import costs and can shift share toward domestic producers — a double-edged sword, since they also raise input costs.

8. Competitive dynamics and consolidation

The industry is fragmented. Domestically, the four largest firms hold about 22.6% of shipments, the top eight about 36.1%, the top twenty about 60%, and the top fifty about 81%; the Herfindahl-Hirschman Index (HHI, a concentration gauge where 1,500+ signals moderate concentration) is only 244.8 — firmly "unconcentrated" [8]. Globally, the top ten makers together hold under 15% of the market [12]. VMA notes that its 125 member companies are responsible for 80% of U.S. industrial-valve shipments, but this is not a concentration ratio: the 125 members include distributors and service providers, not only manufacturers [1].

Despite fragmentation, the structure is two-tiered. A handful of diversified multinationals (Emerson, Flowserve, Baker Hughes, Cameron/SLB, IMI, Weir) dominate engineered, severe-service, and aftermarket valves, where certifications and installed base create moats. Below them sits a long tail of commodity and regional makers exposed to price competition from Chinese and Indian imports.

Consolidation is active, on two tracks — strategic bolt-ons and private-equity roll-ups:

• KKR took CIRCOR private for ~$1.7 billion (2023) [22].
• Crane Company acquired Germany's Baum Lined Piping for $93.5 million (2023) [31].
• Flowserve acquired severe-service specialist MOGAS Industries for approximately $305 million, including a potential earnout (2024) [32].
• Baker Hughes bought Continental Disc Corporation (rupture discs, relief valves) for $540 million (2025) [33], and separately outbid Flowserve to acquire Chart Industries.
• Flowserve agreed to merge with Chart Industries in 2025, then terminated the deal after Chart accepted Baker Hughes's superior offer — collecting a $266 million termination fee [34] — and instead bought Trillium Flow Technologies' valves division (nuclear/power) for $490 million (closed 2026) [35].
• Valmet (Finland) completed its acquisition of ValvTechnologies (severe-service metal-seated ball valves) on July 1, 2026 [7].

The pattern: incumbents buy their way into nuclear, safety, and specialty niches, while PE assembles platforms from the fragmented middle. Aftermarket pull-through and spec-in remain the prize.

9. Risks

• Cyclicality and energy dependence. OE demand rises and falls with oil, gas, chemical, and power capex; a capex downturn hits new-project bookings first. The aftermarket cushions but does not eliminate the cycle.
• Input-cost and supply-chain exposure. Steel, nickel alloys, and — critically — foundry castings and forgings are cost- and lead-time-sensitive; foundry capacity is a chronic bottleneck.
• Trade-policy volatility. U.S. steel and aluminum tariff policy has changed materially in a short period: a 2025 proclamation raised specified Section 232 rates to 50% [36], while a June 2026 proclamation set a 25% additional rate for defined lists through the end of 2027, subject to specified exceptions [37]. Whether a particular valve, casting, or component falls within an annex requires product-level customs analysis. Tariffs help on the demand side (favoring domestic producers) but raise input costs; sudden changes are hard to plan around.
• Import competition. Low-cost imports pressure the commodity segment; domestic makers defend on engineered product, service, certifications, and Buy-America rules.
• Labor risk. Skilled machinists, welders, and foundry workers are in short supply. As a broad occupational proxy, BLS projects about 34,200 machinist and tool-and-die openings annually from 2024–2034, almost entirely to replace workers leaving the occupation, despite a projected 2% employment decline; median May 2024 machinist pay was $56,150 [38].
• Energy-transition ambiguity. Long-run decline in hydrocarbon capex is a risk to the largest end market — partly offset (perhaps more than offset) by valve-intensive hydrogen, CCUS, nuclear, water, and electrification demand (judgment, not certainty).
• Concentration in a few end markets. Heavy exposure to oil and gas means a sector-specific shock propagates quickly.
• Product liability and safety. A valve failure in hazardous, high-pressure, or nuclear service can be catastrophic and litigation-heavy — reputation and certification are existential.
• Long-cycle execution. Backlog can be slow to convert; project delays and cost overruns compress margins.

10. How to invest and the outlook

Public-market routes. There is no scaled U.S.-listed pure-play, so exposure is a choice about which mix you want:

• Flowserve (FLS) — closest to a flow-control pure-play (pumps + valves + aftermarket).
• Emerson (EMR) — highest-quality valve franchise (Fisher/Final Control), inside a large automation company.
• Curtiss-Wright (CW) — nuclear and naval valves, defense-flavored and less oil-cyclical.
• Crane (CR), ITT (ITT) — diversified industrials with meaningful process-valve segments.
• Mueller Water Products (MWA) — the waterworks/infrastructure angle (less energy-cyclical).
• Baker Hughes (BKR) — energy-technology exposure with a growing valve/safety business.
• Core & Main (CNM) — distribution exposure (pipes, valves, fittings ~67% of sales).
• Foreign-listed: IMI, Rotork, Weir (London); Valmet (Helsinki); KITZ (Tokyo).

Because valves are a segment, investors judge these names on segment operating margin, aftermarket mix, bookings/backlog and book-to-bill, and end-market diversification — reserve valuation multiples and dividend decisions for the specific name.

Private-market routes. This is where the industry is most directly investable. Much of it is privately held (Bray International) or PE-owned (KKR's CIRCOR, Granite Equity's DeZURIK), and the M&A market is liquid — strategics and sponsors trade platforms regularly. The most repeatable private plays are often not manufacturing at all: valve distribution and valve repair/service shops throw off recurring, high-margin, capital-light cash and are natural roll-up targets. The more defensible acquisition targets tend to have an installed base, approved-vendor positions, proprietary severe-service designs, documented certifications, and meaningful aftermarket revenue. A private investor can also back or buy a regional specialty or waterworks valve maker positioned for Buy-America demand.

Common analytical errors. The most common is to label every company that sells a "valve" as a NAICS 332911 manufacturer — plumbing and HVAC valves, hydraulic and pneumatic fluid-power valves, actuators, regulators, distributors, and repair services may sit in different NAICS categories. A second error is to sum global segment sales from Emerson, Flowserve, Crane, and Mueller and call the result the U.S. market; those disclosures include foreign production, adjacent products, and services.

Near-term drivers (forward-looking). The setup looks constructive: U.S. LNG export buildout, gas-fired power for data-center load, nuclear life-extension and SMRs, federally funded water and lead-line replacement, reshoring of chemicals and semiconductors, and early decarbonization (hydrogen/CCUS) projects — all valve-intensive. Tariffs and Buy-America rules tilt toward domestic producers. The aftermarket and replacement cycle provide a floor under demand through any capex wobble. The main swing factors to watch are the oil-and-gas capital-spending cycle, foundry/casting supply, trade-policy volatility, and the pace of the energy transition. These are expectations, not guarantees; the industry's fortunes still rise and fall with heavy-industry investment.

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Sources

1. Valve Manufacturers Association, Common Valve Types (valve definitions, functions, VMA member coverage). https://www.vma.org/page/commonvalvetypes; https://www.vma.org/
2. U.S. Census Bureau, 2022 NAICS Definition — 332911 Industrial Valve Manufacturing (includes/excludes; adjacent codes 332912, 332919), 2022. https://www.census.gov/naics/
3. Flowserve Corporation, Form 10-K FY2025 (Flow Control Division sales $1,505M, 29.6% gross margin, 11.9% operating margin; 2025 bookings mix; principal inputs; selective bidding), 2026. https://www.sec.gov/Archives/edgar/data/30625/000003062526000003/fls-20251231.htm
4. ASME, B16.34 Valves — Flanged, Threaded, and Welding End (pressure-temperature ratings, materials, testing, marking). https://www.asme.org/codes-standards/find-codes-standards/b16-34-valves-flanged-threaded-welding-end
5. American Water Works Association, Standards List (C504 rubber-seated butterfly valves, C509 resilient-seated gate valves). https://www.awwa.org/Publications/Standards/Standards-List
6. DeZURIK, Ownership Announcement (Granite Equity Partners majority owner). https://price.dezurik.com/news/dezurik-acquires-hilton-valve/1
7. ValvTechnologies / Valmet, Acquisition Announcement (completed July 1, 2026). https://www.valv.com/about/
8. U.S. Census Bureau, 2022 Economic Census — Concentration Ratios and Statistics, NAICS 332911 (receipts $14.28B; 395 firms; CR4 22.6%, CR8 36.1%, CR20 60%, CR50 81%; HHI 244.8), 2022. https://www.census.gov/programs-surveys/economic-census.html
9. U.S. Census Bureau, County Business Patterns 2023, NAICS 332911 (472 establishments; 34,046 employees; $2.66B annual payroll), 2023. https://www.census.gov/programs-surveys/cbp.html
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12. MarketsandMarkets, Industrial Valves Market — Global Forecast to 2032 (global ≈ $89–90B; top-ten share under 15%), 2025. https://www.marketsandmarkets.com/Market-Reports/industrial-valve-market-256097136.html; IMARC, Top Industrial Valve Manufacturers (fragmentation). https://www.imarcgroup.com/blog/industrial-valves-manufacturing-companies
13. Emerson Electric Co., Form 10-K FY2025 (Final Control segment sales $4,380M, segment earnings $1,081M; brands Fisher, Crosby, Anderson Greenwood, Bettis, Keystone, KTM, Vanessa), 2025. https://www.sec.gov/Archives/edgar/data/32604/000003260425000087/emr-20250930.htm
14. Crane Company, Form 10-K FY2025 (Process Flow Technologies process valves $947.6M; segment $1,256M at 21.0% operating margin; cost pressures), 2026. https://www.sec.gov/Archives/edgar/data/1944013/000194401326000095/cr-20251231.htm
15. Curtiss-Wright Corporation, Fourth-Quarter and Full-Year 2024 Financial Results (total sales $3.1B, 2024), Feb. 2025. https://curtisswright.com/news/press-releases/news-release-details/2025/curtisswright-reports-fourth-quarter-and-fullyear-2024-financial-results-issues-fullyear-2025-guidance-reflecting-higher-sales-operating-margin-expansion-and-doubledigit-eps-growth
16. ITT Inc., Industrial Process segment (engineered valves + pumps ≈ $1.4B, 2024). https://www.itt.com/
17. Mueller Water Products, Form 10-K FY2025 (Water Flow Solutions $824.9M, 35.9% gross margin; total $1,430M; inflation/tariff offsets), 2025. https://www.sec.gov/Archives/edgar/data/1350593/000135059325000066/mwa-20250930.htm
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19. Macrotrends, Watts Water Technologies Revenue 2017–2025 ($2.44B in 2025), 2026. https://www.macrotrends.net/stocks/charts/WTS/watts-water-technologies/revenue
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21. Bray International, Company overview (privately held, Houston; butterfly, ball, knife-gate, check valves and actuators). https://www.bray.com/
22. Bloomberg / Valve Magazine, KKR to Buy Valve-and-Pump Maker Circor in $1.7 Billion Deal (completed Oct. 2023), 2023. https://valvemagazine.com/news/circor-international-enters-acquisition-deal-with-kkr/; CIRCOR, Transaction Announcement. https://www.circor.com/news/circor-international-announces-completion-acquisition-kkr
23. IndexBox / market research, Oil & Gas Valves and LNG Demand (U.S. LNG export capacity ≈ 15 Bcf/d in 2025; replacement/MRO ≈ 50–55% of demand), 2025. https://www.indexbox.io/blog/oil-and-gas-valves-market-demand-to-accelerate-by-2035-supported-by-global-energy-infrastructure-modernization/
24. Valve Manufacturers Association, 2020 Market Forecast (U.S. industrial-valve shipments $4.759B; end-market breakdown: chemicals 17.9%, water/wastewater 16.3%, petroleum production 13.1%, power generation 11.7%, refining 11.3%, oil/gas transmission 6.4%), 2020. https://cdn.ymaws.com/www.vma.org/resource/resmgr/docs/2020_Market_Forecast_and_pie.pdf
25. Dataintelo, Nuclear Power Control Valve Market (subsequent license renewal extending nuclear licenses 60→80 years drives valve replacement/requalification), 2025. https://dataintelo.com/report/nuclear-power-control-valve-market
26. U.S. Environmental Protection Agency, Water Infrastructure Investments (IIJA provides more than $50B through EPA for drinking-water, wastewater, stormwater infrastructure). https://www.epa.gov/infrastructure/water-infrastructure-investments
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28. Onero Valve / Tango Valve, API 6D vs ASME B16.34; API 600 gate valves (core valve design/testing standards), 2024–2025. https://www.onerovalve.com/blog/comparison/api-6d-vs-asme-b16-34/
29. Valve Magazine, Fugitive Emissions Standards for Valves (API 622/624/641; EPA Method 21; 100 ppm allowable leakage), 2024. https://valvemagazine.com/articles/fugitive-emissions-standards-for-valves/
30. U.S. Environmental Protection Agency, Final Rule to Reduce Methane and Other Harmful Pollution from Oil and Natural Gas Operations. https://www.epa.gov/controlling-air-pollution-oil-and-natural-gas-operations/epas-final-rule-reduce-methane-and-other
31. Orrick, Crane Company Acquires Baum Lined Piping GmbH ($93.5M), Oct. 2023. https://www.orrick.com/en/News/2023/10/Crane-Company-Acquires-Baum-Lined-Piping-GmbH
32. Flowserve Corporation, Flowserve Completes Acquisition of MOGAS Industries (~$305M including earnout), 2024. https://ir.flowserve.com/news-events/news-details/2024/Flowserve-Completes-Acquisition-of-MOGAS-Industries/default.aspx
33. Baker Hughes Company, Baker Hughes to Acquire Continental Disc Corporation ($540M), June 2025. https://investors.bakerhughes.com/news/press-releases/news-details/2025/Baker-Hughes-to-Acquire-Continental-Disc-Corporation-a-Differentiated-Leader-in-Pressure-Management-Solutions-06-16-2025/default.aspx
34. Flowserve Corporation, Flowserve Terminates Merger with Chart Industries ($266M termination payment), July 2025. https://ir.flowserve.com/news-events/news-details/2025/Flowserve-Corporation-Terminates-Merger-with-Chart-Industries/default.aspx
35. World Oil, Flowserve Completes $490 Million Acquisition of Trillium Valves Business (nuclear/power valves, closed 2026), July 2026. https://worldoil.com/news/2026/7/1/flowserve-completes-490-million-acquisition-of-trillium-valves-business/
36. The White House, Proclamation: Adjusting Imports of Aluminum and Steel into the United States (Section 232 rates raised to 50%), 2025. https://www.whitehouse.gov/presidential-actions/2025/06/adjusting-imports-of-aluminum-and-steel-into-the-united-states/
37. The White House, Proclamation: Further Adjusting the Tariff Regimes for Imports of Aluminum, Steel, and Copper (25% additional rate through end of 2027), June 2026. https://www.whitehouse.gov/presidential-actions/2026/06/further-adjusting-the-tariff-regimes-for-imports-of-aluminum-steel-and-copper-into-the-united-states/
38. U.S. Bureau of Labor Statistics, Occupational Outlook Handbook: Machinists and Tool and Die Makers (34,200 annual openings 2024–2034; 2% employment decline; $56,150 median pay May 2024). https://www.bls.gov/ooh/production/machinists-and-tool-and-die-makers.htm