Abstract: A packing assembly for a cylinder is clamped between two parts of a casing of a cylinder between which a piston is received. The piston has a shaft which extends out from the casing of the cylinder. The packing assembly includes two seal frames connected to the two parts and the packing is clamped between the two seal frames. The packing includes a seal portion in contact with a top and a bottom of the piston. A seal tongue extends from the inner periphery of the packing and is in contact with inside of the two parts so as to seal the conjunction portion of the two parts of the casing. The seal frames are tightly engaged with the two parts of the cylinder so that the two respective connection peripheries of the two parts do not need to be machined precisely.

Abstract: A cylinder packing is clamped between two parts of a casing of a cylinder and a piston is received between the two parts. The piston has a shaft which extends out from the casing of the cylinder. The packing includes a seal portion extending from an inner periphery thereof and being in contact with a top and a bottom of the piston. A seal tongue extends from the inner periphery of the packing and is in contact with inside of the two parts so as to seal the conjunction portion of the two parts of the casing.

Abstract: A valve having an inner washing structure, includes a receiving chamber. The valve is formed with at least one washing hole which is located at a position opposite to the tangential plane of the outer diameter of the ball, and is communicated with the receiving chamber. Thus, the valve can be washed through the washing hole directly, without having to detach the valve, thereby facilitating the washing work without wearing the inside of the valve.

Abstract: A valve having an inner washing structure, includes a receiving chamber. The valve is formed with at least one washing hole which is located at a position opposite to the tangential plane of the outer diameter of the ball, and is communicated with the receiving chamber. Thus, the valve can be washed through the washing hole directly, without having to detach the valve, thereby facilitating the washing work without wearing the inside of the valve.

Abstract: The application describes a steel composition consisting essentially of Carbon 0.50-0.70 weight % Silicon up to 0.40 weight % Manganese 0.55-1.00 weight % Phosphorus 0.030-0.070 weight % Sulphur 0.055 to 0.110 weight % Chromium up to 0.50 weight % Molybdenum up to 0.10 weight % Nickel up to 0.5 weight % Copper up to 0.50 weight % Aluminium up to 0.050 weight % Optionally, Vanadium sufficient to maintain yield strength Nitrogen up to 0.030 weight %, together with, optionally, lead up to 0.4 weight %, and unavoidable impurities, the balance being iron. This steel composition exhibits mechanical properties which are suitable for use in connecting rods but which provide both good fracture splitting performance and good machinability when compared to C70S6 alloys. The application also refers to a fracture splittable steel including between 0.50 to 0.70 wt % C, 0.55 to 1.00 wt % Mn, 0.030 to 0.070 wt % P and 0.055 to 0.

Abstract: Process for removing mercury from a gas contaminated with mercury vapor, comprising the steps of cooling the contaminated gas, removing water vapor from the cooled gas and filtering the dehydrated gas through a medium comprised of pure elemental sulfur. The mercury bound to the medium may be removed by heating liquid carbon disulfide to form a carbon disulfide vapor, cooling the carbon disulfide vapor so that liquid carbon disulfide is formed, spraying the liquid carbon disulfide over the medium containing the bound mercury, so as to remove the mercury from the medium and allowing elemental sulfur to dissolve into the liquid carbon disulfide and allowing said elemental mercury to separate away from the elemental sulfur/carbon disulfide solution.