Platinum Equity Buys Warren Valve as Management Reinvests

Platinum Equity announced on November 2, 2026 that it had acquired Warren Valve from Allied Group for undisclosed terms. Allied Group founder and CEO Marc Herzstein and members of Warren Valve’s management team invested alongside Platinum Equity and will be minority shareholders in the standalone business.

Warren Valve’s existing management team, led by President and CEO Mark Day, will continue leading the company. “We made it because Warren is ready to stand on its own, and Platinum has the resources and the experience to take it further as an independent company than it could inside Allied,” Herzstein said. Allied will continue working with Warren Valve as a partner and customer.

Headquartered in Houston, Texas, Warren Valve supplies engineered and distributed valve products for critical flow-control applications across North America. It serves energy, industrial, technology and infrastructure end markets.

Warren Valve’s company history says it has evolved over 30 years from supplying products for alloy applications and downstream process markets into a full-service manufacturing company. It focuses on oil and gas, industrial and mechanical markets throughout North America. Warren Valve Engineered Products operates in Houston and Edmonton, Alberta, providing customized valve solutions.

Platinum Equity Co-President Jacob Kotzubei said the firm expects Warren Valve to benefit from continued investment in energy infrastructure, power generation, LNG and other industrial markets. He also identified potential upside from growing demand for power infrastructure tied to data-center and AI development. Platinum Equity Partner Matthew Louie described Warren Valve as having leading market positions, strong customer relationships and attractive recurring-revenue characteristics, with multiple avenues for growth.

Day said the partnership is expected to support expansion across North America, investment in products and solutions, strategic acquisitions and greater value for customers, employees and business partners.

Platinum Equity reported approximately $48 billion of assets under management and more than three decades of experience executing corporate divestitures, supporting management teams and leading complex transformation initiatives. Its previous acquisitions include businesses from Kohler, Emerson Electric (EMR ), Caterpillar and Ingersoll Rand (IR ).

A Federal Trade Commission early-termination record dated October 27, 2026 identifies Platinum Equity Capital Partners VI, L.P. as the acquiring party, Marc Herzstein as the acquired party and the granting status as granted.

Fifth Third Bank served as financial adviser to Platinum Equity and joint lead arranger supporting the acquisition financing. Gibson, Dunn & Crutcher LLP served as legal adviser and Willkie Farr & Gallagher LLP as debt-financing counsel to Platinum Equity. Jefferies LLC was Allied Group’s exclusive financial adviser, Baker Botts L.L.P. was Allied’s legal adviser, and Shiels PLLC advised Warren Valve executive management.

With its existing management team staying in place, Warren Valve becomes a standalone business while Allied remains a partner and customer. The announcement does not provide a purchase price or a timetable for the acquisitions included in Day’s growth plans.