Keywords: Pressureproof penetration.jpg en Pressureproof cable penetration units for nuclear power plants Are used for pipe and cable penetration through concret walls and floors 1 - pipe; 2 - bush sleeve; 3 - wall; 4 - facing; 5 - washer; 6 - ring; 7 - diaphragm own Pavlov 2010-02-20 diagram Drawings of firestops |