Executive Team

Leadership determines the course and path that a business follows. Doing the right thing in all situations is integral to the core philosophy of Clow Valve Company. Whether it involves the environment, safety, community or our team members, Clow Valve's management team is committed to keeping these values at the forefront of our business strategy.

  • Leon G. McCullough

    Executive Vice President, Waterworks Fittings Group

    Leon G. McCullough has served as Executive Vice President of the Valve and Hydrant Group since 1995, the Steel Fabrication Group since 2004 and the Waterworks Fittings Group since 2007.

  • Mike Vore

    Sales & Marketing Manager

    Mike Vore is the Sales & Marketing Manager for the McWane Valve & Hydrant Group. He has worked for Clow Valve for over 30 years.

  • Mark Willett

    General Manager

    Mark Willett has been the General Manager of Clow Valve Company since April 2015.

  • Steve Werninger

    National Sales Manager

    Steve Werninger is the National Sales Manager for Clow Valve Company. He has worked in the Utility Supply business for over 25 years.

  • John Grahek

    MFC Manager

    John Grahek is the MCF manager at Clow Valve Company. John has been a part of the Clow Valve team since 1998.

  • Tiffany Tremmel

    Human Resources Manager

    Tiffany Tremmel was promoted to Human Resource manager at Clow Valve Company in 2016. She has been with the Clow Human Resources Department since 2010 and has over 12 years of HR experience.

  • Andy Holmberg

    Machine Shop Manager

    Since 2010, Andy Holmberg has been the Machine Shop Manager for Clow Valve Company. Andy originally began working for Clow Valve in 1989.

  • John Jackson

    Plant Manager, Clow Corona

    The Plant Manager for Clow Valve Company, Corona is John Jackson. John has been working for Clow Valve since October of 2010.

  • Doug Stracke

    Environmental Manager, Clow Valve Oskaloosa

    Doug Stracke has been the Environmental Manager at Clow since 2004.

  • Maureen Kamphaus

    Health and Safety Manager

    Maureen Kamphaus has been the Health and Safety Manager at Clow Valve since November 2015.