Pressure Seal Ultraflex® Wedge Gate Valves

Velan’s Pressure Seal Ultraflex® Wedge Gate Valve shows how proven engineering can be reimagined to meet today’s most extreme service conditions.

Originally developed more than 20 years ago, the Ultraflex® wedge continues to address a new generation of high-pressure, high temperature applications. The proven design was selected for an order of four motorized 10″ Class 4500 pressure seal Ultraflex® wedge gate valves in ASTM A182 F92 material, designed for service conditions exceeding 5,000 PSI and 1,130°F (35 MPag and 610°C), for an ultra-supercritical power plant installation in China.

While Velan is well known for valves in critical applications, the combination of valve size, material, and pressure rating represented an extreme specification. Leveraging the Ultraflex® wedge gate technology was instrumental in meeting the demands of ultra-high pressure power generation services. 

Unlike parallel slide or two-piece wedge designs, the one-piece Ultraflex® wedge offers a simpler construction with superior resistance to thermal and pressure-induced binding, delivering enhanced reliability under extreme operating conditions. 

Additional durability comes from Velan’s one-piece forged body (nonwelded construction) and barrel yoke design, which eliminates posts and enhances structural integrity. Together, these features provide confidence, durability, and performance in the most demanding applications. 

Choose Velan for pressure seal gate valves engineered to perform where limits are pushed—and where proven innovation makes the difference.