FLS vs PNR

For growth investors, Flowserve Corporation (FLS) is the stronger pick with 3.

8% revenue growth year-over-year, versus 2. 3% for Pentair plc (PNR). Pentair plc (PNR) offers the better valuation at 19. 9x trailing P/E (14. 8x forward), making it the more compelling value choice. Analysts rate Flowserve Corporation (FLS) a "Hold" — based on 31 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Pentair plc (PNR) is the cheapest at 19.

9x versus Flowserve Corporation at 27. 1x. On forward P/E, Pentair plc is actually cheaper at 14. 8x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Flowserve Corporation wins at 0. 82x versus Pentair plc's 1. 13x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Flowserve Corporation (FLS) delivered a total return of +77.

4%, compared to +23. 0% for Pentair plc (PNR). Over 10 years, the gap is even starker: PNR returned +126. 9% versus FLS's +75. 6%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Pentair plc (PNR) is the lower-risk stock at 1.

22β versus Flowserve Corporation's 1. 69β — meaning FLS is approximately 38% more volatile than PNR relative to the S&P 500. On balance sheet safety, Pentair plc (PNR) carries a lower debt/equity ratio of 42% versus 85% for Flowserve Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Flowserve Corporation (FLS) is pulling ahead at 3.

8% versus 2. 3% for Pentair plc (PNR). On earnings-per-share growth, the picture is similar: Flowserve Corporation grew EPS 23. 4% year-over-year, compared to 5. 9% for Pentair plc. Over a 3-year CAGR, FLS leads at 9. 4% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Pentair plc (PNR) is the more profitable company, earning 15.

7% net margin versus 7. 3% for Flowserve Corporation — meaning it keeps 15. 7% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: PNR leads at 20. 5% versus 13. 0% for FLS. At the gross margin level — before operating expenses — PNR leads at 40. 5%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Flowserve Corporation (FLS) is the more undervalued stock at a PEG of 0. 82x versus Pentair plc's 1. 13x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Pentair plc (PNR) trades at 14. 8x forward P/E versus 17. 5x for Flowserve Corporation — 2. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PNR: 43. 8% to $113. 56.

All stocks in this comparison pay dividends.

Pentair plc (PNR) offers the highest yield at 1. 3%, versus 1. 2% for Flowserve Corporation (FLS).

For long-horizon retirement investors, Pentair plc (PNR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1.

22), 1. 3% yield, +126. 9% 10Y return). Flowserve Corporation (FLS) carries a higher beta of 1. 69 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (PNR: +126. 9%, FLS: +75. 6%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Industrials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.