For more than 60 years, General Valve has been the market leader for double block and bleed expanding plug valves. As the original pioneer, Twin Seal™ established the standard design specification for high-integrity, positive shut-off valves. For both in-line testing and simple field maintenance and repair, aviation fuel facility managers, engineers and contractors rely on General Valve Twin Seal for safe fuel delivery with positive, provable segregation. . . when leaks matter.
