The Stephens Group, an investment management firm, completed the acquisition of Quality Valve, a provider of OEM relief valve replacement parts intended to serve the valve repair market, from Pfingsten Partners, a private equity firm. Financial terms were not disclosed. “We are thrilled to add Quality Valve to our family of companies. Quality Valve’s differentiated competitive positioning and their broad suite of low-cost, high-consequence-to-failure products make this business a perfect fit for our specialty distribution focus. We have a high degree of confidence in CEO Jody Dunn and the entire management team and the business they have built. We are looking forward to working together to execute on our shared vision to extend the leadership of this specialty distribution platform," Grant Jones, Stephens Managing Director.