Abstract: A water bath apparatus for testing pressurized cans of aerosol products in groups for leakers. A spokeless horizontal cylinder is supported and rotatable on trunnions in a tank partly filled with water. The cylinder has end rings which ride on sets of trunnions mounted on opposing walls on the tank interior. Uniformly spaced elongated clamps structurally interconnect the end rings to form the sidewall of the cylinder. Each clamp after loading carries a group of cans down into the water and then upwardly out of the water for unloading. A horizontal tube extends through the tank and through the spokeless interior of the cylinder. An elongated conveyor extends through the top of the tube and the interior of the cylinder. Each clamp is normally closed so as to retain a group of cans to be tested.

Abstract: An explosion suppression system disposed externally of a structure that encloses a protected zone. The system includes a source of pressurized explosion suppressant, a pressure detector, a release mechanism for releasing the suppressant through a discharge port opening into the protected zone in response to detection of a pressure wave by the detector, and tubulation providing fluid communication between the detector and the protected zone. An inclined portion of the tubulation terminates with an intake port and comprises both vertical and horizontal components of substantial magnitude.