T.D. Williamson STOPPLE Train Plugging System

摘要

T.D. Williamson's STOPPLE Train plugging system is a double-block and bleed patented design that makes it possible to insert two plugging heads through a single fitting. The void between the two plugging heads can be bled down to provide a "zero energy" zone. Both plugging heads are rated to 1,480 psi at 180 degrees F, or reduced pressures at temperatures up to 350 F.