Snapshot

The global industrial pump market was roughly $57.6 billion in 2025 revenue and is forecast to grow at ~4.9% CAGR through 2035, reaching ~$92.5 billion. est. Pumps move water, coolant, chemicals, oil, and other fluids through industrial systems — power plants, water treatment facilities, data centers, refineries, semiconductor fabs, and commercial buildings. The market is fragmented: the top five players (Grundfos, Xylem, Flowserve, Ebara, Alfa Laval) collectively hold ~31% share. est. Centrifugal pumps (the type that spins fluid outward using an impeller) account for ~$40.5 billion of the total. est. The U.S. is roughly $9.7 billion of the global market. est. The four U.S.-listed pure-play public companies below — XYL, IEX, FLS, and PNR — together generated roughly $18.5 billion in 2025 revenue, though much of that is valves, metering, water treatment, and services rather than pump units alone. est.

Ticker clarification: RXO (RXO Inc.) is a trucking and freight brokerage company — excluded from this analysis. IDEX Corporation trades under ticker IEX, not "IDEX." The relevant pump/fluid-handling U.S. public companies are XYL (Xylem), IEX (IDEX Corp), FLS (Flowserve), and PNR (Pentair). FLS and PNR are included as key comparables even though they were not in the original request.

The product & how money is made

A pump is a machine that uses mechanical energy (usually from an electric motor, sometimes a diesel or gas engine) to move fluid from one place to another. The two main families:

• Centrifugal pumps — spin an impeller to fling fluid outward. Used for high-volume, low-viscosity applications: municipal water, cooling loops, firefighting. ~70% of the market by revenue. est.
• Positive displacement pumps — trap a fixed volume and push it through. Used for viscous, precise, or high-pressure applications: chemical dosing, food processing, oil pipelines, pharmaceutical manufacturing.

Valves control the flow that pumps create — opening, closing, or throttling. Most pump companies also sell valves, meters, and controls as a bundled "fluid handling" package.

How the money comes in

• Original equipment (OE): new pumps/valves sold into construction projects (new power plants, water treatment plants, data centers, fabs). Lumpy, tied to capex cycles.
• Aftermarket: replacement parts, maintenance contracts, repair services for the installed base. Recurring, higher-margin, grows with the aging installed base. Flowserve's aftermarket bookings were $2.6B in 2025, or 56% of total bookings. IDEX's FMT segment earns 33.2% adjusted EBITDA margins largely because of aftermarket content.
• Solutions/services: Xylem bundles software, metering, and managed services (its Water Solutions & Services segment was $2.5B in 2025, 27% of revenue). Its $850M, 20-year outsourced water contract booked in April 2026 is a representative deal.

Gross margins range from ~35% (Flowserve, heavier OE mix) to ~45% (IDEX, specialty positive-displacement). Every pump sold creates a decades-long stream of parts, seals, and service revenue. A large water pump might cost $50,000-500,000 to buy and $10,000-50,000/year to maintain. est.

Pumps are typically 1-5% of total project cost in a large facility build, so demand is driven by the number of facilities being built, not the price of the pump itself. est.

Source: FY2025 earnings releases for XYL, IEX, FLS; GM Insights Pumps Market Report 2026.

Demand

Contracted / booked demand

Pump companies report orders (bookings) and backlog — signed customer commitments not yet shipped. contracted

IDEX's Q4 2025 orders hit a record $979M (+20% reported, +16% organic), driven mostly by strength in HST — the Health & Science Technologies segment that serves semiconductor, data center, and life science end markets. Flowserve booked ~$400M in nuclear-related orders during FY2025. Xylem's Applied Water segment data center orders in Q1 2026 alone surpassed the full-year 2025 total for that end market.

Forecast demand drivers est.

• Data center cooling: Every megawatt of data center capacity requires chilled water pumps for facility cooling and, increasingly, pumps for direct liquid cooling at the rack level. Xylem's CEO noted the AI ecosystem "will need about 30 trillion liters of water each year by 2050" — a 130% increase in water demand — but clarified that direct data center water use is only ~4%; the other 96% is power generation and semiconductor fabrication water demand. The pump opportunity is more "outside the four walls" of data centers (mining, power generation, chip fab water treatment) than inside them.
• Power plant construction: Gas turbine and nuclear plant buildouts for AI load require feedwater pumps, condensate pumps, cooling tower circulation pumps. Flowserve's $400M nuclear bookings in FY2025 reflect this.
• Water & wastewater infrastructure: The largest end market globally at 5.7% forecast CAGR. Aging infrastructure in the U.S. and rapid urbanization in Asia drive replacement and new-build demand. est.
• Semiconductor fab construction: Ultra-pure water systems for chip fabs use specialty pumps. IDEX's HST segment (serving semicon) grew +4% organic in FY2025 and saw record Q4 orders.
• Oil & gas: Cyclical but significant. The U.S. Gulf Coast and Middle East drive demand for heavy-duty process pumps. Flowserve's historical core.

Source: XYL Q4 2025 and Q1 2026 earnings calls; IEX FY2025 earnings release; FLS FY2025 earnings release; GM Insights Pumps Market Report 2026; Xylem Global Water Intelligence commissioned study.

Supply

Capacity and installed base

The pump industry is mature manufacturing with hundreds of manufacturers globally — the top five hold only ~31% of the market. est. Production capacity for standard centrifugal pumps is broadly adequate.

Bottlenecks

• Large engineered-to-order pumps: Lead times for custom-engineered pumps (nuclear plants, large refineries, critical cooling systems) have extended. These require specialized casting, machining, and testing. A large API-compliant process pump can take 6-12 months from order to delivery. est.
• Specialty alloy castings: Corrosion-resistant alloys (Hastelloy, Inconel, duplex stainless) used in chemical and severe-service pumps face longer procurement cycles due to limited foundry capacity. est.
• Skilled labor: Pump manufacturing and field service require specialized welders, machinists, and technicians. This workforce is aging and not being replaced at the same rate. est.
• Standard commercial pumps: Not significantly constrained. Produced by dozens of manufacturers across Asia, Europe, and North America with short lead times (weeks, not months). est.

Specialty and mission-critical applications have pricing power; the broader market does not. Power interconnection, transformers, and switchgear are more commonly the binding constraint on large construction projects than pumps. est.

Source: AGI Sector Scan (06-industrial-construction.html); lead time data is directional estimate from trade sources.

The gap

Organic revenue growth across the large players ran at low-to-mid single digits in FY2025 (~1-5%). Within that, data center and power generation grew faster (Xylem's data center orders accelerating, IDEX's HST posting record orders, Flowserve booking $400M nuclear). Water and wastewater is the steady base.

Supply is adequate for standard pumps. Specialty and engineered-to-order pumps have moderate tightness and extended lead times. The pricing environment has been positive: all three large players expanded margins in FY2025 (Xylem adjusted EBITDA margin +160bps to 22.2%, Flowserve adjusted operating margin +300bps to 14.8%, IDEX gross margin +30bps to 44.5%).

Pumps benefit from the AI infrastructure buildout (data centers, power plants, fabs) as a derivative play — they go into the building, not the compute stack. The demand uplift is measured in low single-digit percentage points of incremental growth on a $58B global base. est.

Source: FY2025 and Q1 2026 earnings data for XYL, IEX, FLS.

The players

IDEX (IEX) makes specialty positive-displacement pumps (gear, diaphragm, peristaltic, lobe) for chemical, food, pharma, and energy applications through its FMT segment. FMT earns 33.2% adjusted EBITDA margins. FMT is 35% of IDEX revenue; the other 65% is Health & Science Technologies (life science instruments, semiconductor components, optics) and Fire & Safety/Diversified Products.

Xylem (XYL) is the broadest water technology platform. After its 2023 acquisition of Evoqua Water Technologies (~$7.5B), it spans pumps, treatment, metering, and managed services. Applied Water ($1.85B, the segment with data center pump exposure) grew +2% organic in FY2025 but saw a spike in data center orders in Q1 2026. Measurement & Control Solutions ($2.09B, smart meters) grew fastest at +9% organic. XYL carries $8.3B of goodwill on $11.5B of equity.

Flowserve (FLS) is most exposed to heavy industrial and power generation pumps. Its Pumps Division ($3.24B, 68% of revenue) makes large engineered centrifugal and positive-displacement pumps for oil/gas, nuclear, chemical, and power. FLS booked $400M in nuclear awards in FY2025. It reached its 2027 adjusted operating margin target (14.8%) two years early. Aftermarket was 56% of bookings.

Source: FY2025 earnings releases and 10-K filings for XYL, IEX, FLS.

The price of exposure

All three trade at 14-18× EV/EBITDA and 18-25× forward earnings. S&P 500 Industrials sector average is ~14× forward P/E. est. Goodwill is 72% of equity at XYL (Evoqua acquisition) and 85% at IEX (serial acquirer).

Buyback activity: XYL repurchased $581M in Q1 2026 under a new $1.5B authorization. IDEX repurchased $248M in FY2025. FLS returned $365M total via dividends and buybacks in FY2025.

Source: Stock Analysis (stockanalysis.com), accessed Jun 2-3 2026; FY2025 and Q1 2026 earnings releases for XYL, IEX, FLS.

What to deep-dive next

• Xylem data center order pipeline: Q1 2026 Applied Water data center orders exceeded all of FY2025 — how large is this in dollars, what share of Applied Water will it become, and is it one-time project-driven or recurring?
• IDEX HST semiconductor exposure: The HST segment posted record Q4 orders. How much is semicon consumables vs. life science vs. defense? What is the cyclicality risk if the fab buildout slows?
• Flowserve nuclear pipeline: $400M booked in FY2025. How much more is in the funnel from SMR and large reactor new-builds? What is the nuclear aftermarket installed base?
• Aftermarket vs. OE mix evolution: What share of revenue and margin is aftermarket for each, and how fast is the installed base growing?
• Goodwill impairment risk: XYL and IEX have goodwill at 72-85% of equity. If an acquisition underperforms (e.g., Evoqua at XYL), a writedown could erase book value.
• Liquid cooling pump TAM: The shift from air to liquid cooling in data centers creates a new pump application. How large is this addressable market, and do any of these companies have a differentiated position?
• Pentair (PNR): Relevant peer (~$4.1B FY2025 revenue est.) focused on residential and commercial water treatment, pool pumps, flow control — differentiating residential exposure vs. the industrial focus of XYL/IEX/FLS.

Sources & confidence