Abstract: A single use wall pass-through system having a fixed wall part attached through an opening in a wall and connected by at least one mounting flange. The fixed wall part includes clamping flanges used to provide a sealed connection between the fixed wall part and the hose or tube which carries the material from an outside area into another area defined on the inside of the wall. A combination gasket and clamp plate formed as one piece connects to the clamping flange via a clamping ring. The transfer hose and the combination gasket and clamp plate are preferably disposable.

Abstract: A single use wall pass-through system having a fixed wall part attached through an opening in a wall and connected by at least one mounting flange. The fixed wall part includes clamping flanges used to provide a sealed connection between the fixed wall part and the hose or tube which carries the material from an outside area into another area defined on the inside of the wall. A combination gasket and clamp plate formed as one piece connects to the clamping flange via a clamping ring. The transfer hose and the combination gasket and clamp plate are preferably disposable.

Abstract: An engine driven reciprocating air compressor. The engine is operated in a through scavenge two-stroke mode. The engine has opposed pistons reciprocating in opposition in a cylinder, the pistons being rigidly connected to respective compressor pistons working in compressor cylinders. A crankshaft rotates about an axis perpendicular to and intersecting the engine cylinder axis. The piston pairs are directly coupled to the crankshaft by connecting rods. The crankshaft synchronizes the piston pairs, defines their strokes, and provides rotary motion for auxiliary devices. The connecting rods and crankshaft are lightweight and do not transmit full engine power. The piston pairs are provided with inward return energy from a flywheel on the crankshaft and air trapped in compressor cylinder clearance volumes. The inward faces of the compressor pistons may be used to compress fuel/air mixture to the scavenge pressure.