Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
PorvairLSE:PRV -0.89%96 EV-to-OCF is 17.81 as of Aug. 11, 2026, which is 3% above its 10-year median of 17.27. GuruFocus rates LSE:PRV with a GF Score™ of 96/100 and a GF Value™ of £7.64 (Modestly Overvalued). The stock has 6 warning signs investors should review. Among 3,074 Industrial Products companies, Porvair ranks worse than 60.54% on this metric.
EV-to-OCF is calculated as enterprise value divided by its cash flow from operations. As of today, Porvair's Enterprise Value is £419.6 Mil.
Porvair's Cash Flow from Operations for the trailing twelve months (TTM) ended in May. 2026 was £23.6 Mil. Therefore, Porvair's EV-to-OCF for today is 17.81.
The historical rank and industry rank for Porvair's EV-to-OCF or its related term are showing as below:
LSE:PRV'
s EV-to-OCF Range Over the Past 10 Years
Min: 12.84 Med: 17.27 Max: 31.76
Current: 17.97
During the past 13 years, the highest EV-to-OCF of Porvair was 31.76. The lowest was 12.84. And the median was 17.27.
LSE:PRV's EV-to-OCF is ranked worse than 60.54% of 3074
companies
in the Industrial Products industry
Industry Median: 11.885
vs LSE:PRV: 17.97
EV-to-OCF is a valuation multiple that allows analysts and investors to compare stocks, preferably in the same sector or industry. This important multiple is often used in conjunction with, or as an alternative to, the PE Ratio (TTM) to determine the fair market value of a company.
EV-to-OCF is a valuation multiple that allows analysts and investors to compare stocks, preferably in the same sector or industry. This important multiple is often used in conjunction with, or as an alternative to, the PE Ratio (TTM) to determine the fair market value of a company.
Porvair's share price for today is £8.92.
For company reported semi-annually, GuruFocus uses latest annual data as the TTM data. Porvair's Earnings per Share (Diluted) for the trailing twelve months (TTM) ended in May. 2026 was £0.404.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Enterprise Value is used because it is a more complete measure in reflecting how much an investor pays when buying a company. Cash Flow from Operations is an important financial metric because it represents the cash generated from operating activities at a company's disposal. Companies with a low EV-to-OCF ratio, combined with a strong balance sheet are generally considered as undervalued.
Porvair EV-to-OCF Related Terms
Porvair EV-to-OCF Historical Data
* Premium members only.
The historical data trend for Porvair's EV-to-OCF can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Pollution & Treatment Controls subindustry, Porvair's EV-to-OCF, along with its competitors' market caps and EV-to-OCF data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Porvair EV-to-OCF vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Porvair's EV-to-OCF distribution charts can be found below:
* The bar in red indicates where Porvair's EV-to-OCF falls into.
Porvair's current Enterprise Value is £419.6 Mil.
For company reported semi-annually, GuruFocus uses latest annual data as the TTM data. Porvair's Cash Flow from Operations for the trailing twelve months (TTM) ended in May. 2026 was £23.6 Mil.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Porvair (LSE:PRV) has a EV-to-OCF of 17.81 as of Aug. 11, 2026. This is near median its historical median of 17.27. Over the past decade, Porvair's EV-to-OCF has ranged from 12.84 to 31.76. According to the industry distribution chart, Porvair ranks #1861 out of 3074 companies in the Industrial Products industry, placing it in the top 60.5%.
Is Porvair's EV-to-OCF too high?
Porvair's current EV-to-OCF of 17.81 is near median its 10-year median of 17.27. Over the past 10 years, this metric has ranged from a low of 12.84 to a high of 31.76. The Industrial Products industry median EV-to-OCF is 11.89. Porvair's value of 17.81 is 49.9% above this industry median. Based on the distribution chart, Porvair ranks #1861 out of 3074 companies in the Industrial Products industry, which is below the industry midpoint. Overall, Porvair has a GF Score™ of 96/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Porvair's EV-to-OCF compare to VLTO and ZWS?
According to the Industrial Products industry distribution chart, Porvair ranks #1861 out of 3074 companies for EV-to-OCF. This places Porvair in the lower half of its industry. The industry median EV-to-OCF is 11.89. Porvair's value of 17.81 is 49.9% above this benchmark. Historically, Porvair's own EV-to-OCF has ranged from 12.84 to 31.76 over the past decade. While the company's 10-year median is 17.27 vs. the industry median of 11.89, Porvair has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good EV-to-OCF for an Industrial Products company?
The median EV-to-OCF among Industrial Products companies is 11.89, based on 3,074 companies in the industry. Companies in the top quartile (top 25%) have a EV-to-OCF significantly above this median, while those in the bottom quartile fall well below. However, EV-to-OCF should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Porvair's current EV-to-OCF of 17.81 is 49.9% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high EV-to-OCF mean?
A high EV-to-OCF can signal that a stock is expensive relative to its fundamentals. For the Industrial Products industry, the median EV-to-OCF is 11.89 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Porvair's current EV-to-OCF is 17.81, which is near median its own 10-year median of 17.27. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Porvair stock overvalued right now?
Based on GuruFocus' analysis, Porvair (LSE:PRV) is currently considered Modestly Overvalued. The stock's GF Value™ is £7.64, compared to a current price of £8.92 — trading 16.8% above its estimated fair value. The current EV-to-OCF is 17.81, which is near median its 10-year median of 17.27 and 49.9% above the Industrial Products industry median of 11.89. Porvair's overall GF Score™ is 96/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is EV-to-OCF calculated?
EV-to-OCF is calculated from a company's financial statements. For Porvair (LSE:PRV), the current EV-to-OCF is 17.81 as of Aug. 11, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Porvair (LSE:PRV) Overvalued in 2026?
Based on GuruFocus' analysis, Porvair stock appears to be overvalued.
The current stock price of £8.92 is trading 16.8% above its estimated GF Value™ of £7.64.
GuruFocus considers Porvair to be Modestly Overvalued.
Key valuation signals for LSE:PRV:
EV-to-OCF: 17.81 (near median its 10-year median of 17.27)
GF Value™: £7.64 vs. price of £8.92 (16.8% above fair value)
Industry Position: 49.9% above the Industrial Products median (#1861 of 3074)
No single metric tells the full story. See the LSE:PRV stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Porvair PLC is an environmental treatment control company. It develops filtration solutions to be used by various types of industries. The company caters to its clients through three divisions: Aerospace and Industrial, Laboratory, and Metal Melt Quality. The Aerospace and Industrial Division is a key revenue generator, principally serving the aviation, energy, and industrial markets. Laboratory Division principally serving the bioscience and environmental laboratory instrument and consumables market. Metal Melt Quality Division principally serves the world aluminium, North American Free Trade Agreement (NAFTA), iron foundry, and superalloys markets. The company generates the majority of its manufacturing revenue from sales in the United States.
96GF Score
Get the complete analysis for LSE:PRV
EV-to-OCF is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
LSE:PRV has been successfully added to your 
