Company Overview

Clow Valve Company produces waterworks valves and fire hydrants in Oskaloosa, Iowa.

For more than 130 years, Clow Valve has been servicing its customers as one of the United States' premiere manufacturers of iron valves and hydrants for the waterworks industry. Since 1878, our facilities have grown, and they continue to be improved through capital expenditures.

Our relationships with our customers allow us to anticipate their needs, provide a superior level of service and, ultimately, help them focus on the intricacies of their business, without worrying about their experience with us. Consequently, our customers frequently see the benefits of doing business with us directly on their bottom line. Our employees, stability, lasting relationships, sound decision making and unwavering commitment to quality and customer service ensure that our customers will continue to enjoy partnering with Clow.

Clow Valve exceeds customer’s expectations every day!

Clow Valve Mission
Clow Valve provides the world with life sustaining water products through service and manufacturing excellence

Clow Valve Vision
To be the world's leading resource for water products and the premier place to work and do business.

Clow Core Values

  • Excellence
  • Loyalty
  • Integrity
  • Innovation
  • Responsiveness
  • Teamwork


Working at Clow Valve

The glory of business is not to make money out of it alone, but to make progress in it, to develop men and women and methods and products, to improve the state of the art.

J. R. McWane

Through the commitment of our team in the United States, Canada, Australia, China and Norway, McWane has emerged as a leader in the industries we serve and active participants in the communities where we work and live.

For more than 90 years, McWane has enjoyed steady growth and increased our workforce. Today, McWane provides approximately 6,000 jobs in more than 25 manufacturing plants, including 13 foundries and 27 additional sales/distribution locations across the world. We also realize that a diverse workforce is a strong workforce. By valuing individual differences and recruiting employees with diverse backgrounds and skills regardless of race, gender or ethnicity, McWane, Inc. employs the industry’s most knowledgeable people in the areas of production, manufacturing and management. By leveraging our employee’s insights and experience throughout our organization, we better serve our customers and create innovation in markets where our products are used.

We are committed to being a safe workplace for employees, providing high-quality products to our customers and being a good neighbor in the communities where we operate.

Company Summary
Clow Valve
Number of Employees
(641) 673-8611
902 South 2nd Street
Oskaloosa, IA