W&O - Marine Supplier of Pipes, Valves, and Fittings

W&O is the right fit for today's maritime industry. We provide solutions for virtually every segment of the industry today.

The largest marine-piping supplier in the United States, W&O offers a wide selection of engineered products, pipe, manual and automatic valves, and metric valves. We work hard to make sure that we find the best solution for all your maritime needs.

We take pride in being a valued partner for the U.S. Navy, commercial shipping companies, barge owners, cruise companies and shipyards throughout North America and Europe.

Customers around the world have found W&O to be the right fit for all their maritime needs.

W&O is proud to announce that it has acquired the assets and operations of Valco Piping Products and its affiliates, Premier Copper Manufacturing, Premier Copper & Brass / Pacific in Virginia and California respectively. The additions of the Valco / Premier Group into the W&O family will continue to provide our customers with the highest quality products while further sustaining W&O's exceptional customer service.