TIANYU DN50-DN400 PN10/PN16 Pneumatic Through Conduit Knife Gate Valve offers abrasive-resistant ductile iron/stainless steel construction, through conduit design, ANSI Class IV leakage, and 0.4–0.6MPa pneumatic actuation. Compliant with ISO 10631/ASME B16.5, it excels in metallurgical slurry, mining, chemical, and power sectors—delivering clog-free operation, durability, and automated efficiency. Backed by a three-year warranty.