The double eccentric high performance butterfly valve — also known as a double offset butterfly valve — is an advanced double offset design product incorporating world-leading technology for demanding industrial service. It features two distinct shaft offsets that cam the disc away from the seat immediately upon opening, eliminating continuous seat contact during operation — a significant advantage over concentric butterfly valves.

The tension on the disc is released after just a few degrees of opening, minimizing wear on the disc seal throughout the valve's service life. This double offset geometry reduces operating torque, minimizes friction and seat wear, and ensures reliable sealing even under sudden changes in temperature or pressure — making it the preferred choice for high-pressure, high-temperature, and safety-critical industrial environments. With API 607 fire-safe certification and ATEX certification, Nortech double eccentric high performance butterfly valves are qualified for the most demanding and hazardous working conditions.

All valves are validated to a 1,000,000-cycle life test with confirmed zero-leakage bi-directional performance, meeting the highest standards for long-term reliability and safety.

Nortech maintains a large stock of valve body castings, ensuring quick delivery in 3–5 weeks for most standard orders.