DEVICE FOR SHUTTING-OFF PIPE LINE

摘要

FIELD: shutting-off inner cavity of pipe line at open end. SUBSTANCE: device has stop and clay plug; stop is made in form of hollow cylinder provided with fixed disk mounted in front portion of cylinder and movable disk mounted for axial displacement along hollow cylinder. Fixed disk has holes for passing rods. Rods are secured. EFFECT: enhanced tightness. 1 dwgl