For more than 90 years, CPV Manufacturing, Inc. has been at the forefront of engineering innovation in valves and fittings. CPV pioneered the O-Seal system concept and many other revolutionary designs. Other manufacturers may try to imitate, but CPV's technology, quality integrity and experience are the real thing. At CPV, research and development are always centered on how well a new product will solve a specific challenge. This means new designs always start with customer needs and are never isolated from the job they will be doing in the field