WNS Lowery is a leading manufacturer of high-quality stainless steel, carbon steel, and ductile iron check valves for oilfield, industrial, and special applications. We also manufacture a full line of high-quality stuffing boxes, pumping and flowing tees, cone-type packing, and wellheads for the oil industry.



Since our founding in 1984, we have been committed to making excellent products that meet the needs   of customers at a cost that offer supreme value. As we focus on continuous improvement and growth for the future, this commitment to value will not waver.

WNS Lowery products are proudly made in the U.S.A. at our 40,000-square-foot plant in Oklahoma City. Through our commitment to quality and knowledge of the oil industry, we continue to set the mark other companies try to match. Our employees know that making the finest products in the industry is everyone’s job, and approach each day with that single-minded dedication.

Our products are sold coast-to-coast through our network of authorized sales representatives with the right inventory to provide reliable, quick service, and delivery. Our sales headquarters in Oklahoma City provides direct manufacturer assistance.