M&A Deal Summary

Pentair Acquires Hydra-Stop

On August 18, 2025, Pentair acquired energy services and equipment company Hydra-Stop from Madison Industries for 290M USD

Acquisition Highlights
  • This is Pentair’s 1st transaction in the Energy Services and Equipment sector.
  • This is Pentair’s 6th largest (disclosed) transaction.
  • This is Pentair’s 13th transaction in the United States.
  • This is Pentair’s 4th transaction in Illinois.

M&A Deal Summary

Date 2025-08-18
Target Hydra-Stop
Sector Energy Services and Equipment
Buyer(s) Pentair
Sellers(s) Madison Industries
Deal Type Add-on Acquisition
Deal Value 290M USD

Target

Hydra-Stop

Burr Ridge, Illinois, United States
Hydra-Stop manufactures specialty valves, fittings, and installation equipment serving water utility service providers and municipalities. Its products prevent water service shutdowns for municipalities and critical facilities by allowing only the affected section of a water pipe to be repaired, versus shutting down vast sections of a water system. Hydra-Stop was founded in 1980 and is based in Burr Ridge, Illinois.

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Buyer(S) 1

Buyer

Pentair

London, United Kingdom

Category Company
Founded 1966
Sector Diversified
Employees9,750
Revenue 4.1B USD (2024)
DESCRIPTION
Pentair facility in Roseville, Minnesota.
Pentair facility in Roseville, Minnesota.

Pentair is a global diversified industrial products company. Pentair's Water and Fluid Solutions segment is a provider of water and fluid processing products and solutions used in a wide range of applications. Pentair's Technical Products segment is a provider of products that enclose and protect some of the world's most sensitive electronics and electrical equipment, ensuring their safe, secure, and reliable performance. Pentair was founded in 1966 and is based in London, United Kingdom.


DEAL STATS #
Overall 18 of 18
Sector: Energy Services and Equipment M&A 1 of 1
Type: Add-on Acquisition M&A Deals 14 of 14
State: Illinois M&A 4 of 4
Country: United States M&A 13 of 13
Year: 2025 M&A 1 of 1
Size (of disclosed) 6 of 13
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2022-03-03 Manitowoc Ice

Manitowoc, Wisconsin, United States

Manitowoc Ice is a designer, manufacturer, and distributor of commercial ice machines in the United States and globally. Manitowoc Ice has excelled at delivering differentiated product innovation, food safety, and sustainability in icemaking. Manitowoc Ice is based in Manitowoc, Wisconsin.

Buy $1.4B

Seller(S) 1

SELLER

Madison Industries

Chicago, Illinois, United States

Investor Investor Investor Investor Investor


Category Private Equity Firm
Founded 1994
Size Large
Type Sector Focused
DESCRIPTION

Madison Industries is a privately held investment holding firm that targets growth investments in and acquisitions of industrial manufacturing companies. Madison prefers businesses with a defensible market niche, established technology, and significant cash-flow growth potential. Madison will also consider turnaround situations. Target opportunities generally have sales between $50 million and $2 billion. Madison Industries is based in Chicago, Illinois.


DEAL STATS #
Overall 19 of 20
Sector: Energy Services and Equipment M&A 1 of 1
Type: Add-on Acquisition M&A Deals 9 of 10
State: Illinois M&A 4 of 4
Country: United States M&A 18 of 19
Year: 2025 M&A 1 of 2
Size (of disclosed) 3 of 4
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2025-05-07 Research Products

Madison, Wisconsin, United States

Research Products is specialised in residential and commercial indoor air quality. Research Products is based in Madison, Wisconsin.

Buy -
FOLLOWING DEAL
DATE TARGET DEAL TYPE VALUE
2025-11-11 Filtration Group

Austin, Texas, United States

Filtration Group designs and manufactures filtration systems and components for applications in healthcare, life sciences, environmental safety, and industrial processes. Filtration Group’s portfolio includes air, liquid, and process filtration solutions used across global markets to improve air quality, product purity, and equipment efficiency.. Filtration Group was founded in 1942 and is based in Austin, Texas.

Sell $9.3B