麻烦哪位英语高手帮我翻译一些说明书，急！叩谢！

1, uses:
The valve is mainly used for water supply and drainage systems, petrochemical, metallurgical and other industrial sectors of the pipeline pump outlet to prevent the media back, the valve can be installed in the reservoir inlet and outlet pipe of the bypass pipe to prevent the destruction of water pumps water back . Since the product design ring with tilt, turn off a short time, can reduce the water hammer pressure, valve oil valve with NBR rubber and metal plates were made to suppress high-temperature resistance, erosion, sealing well, the product of simple structure, easy maintenance and repair transportation .
2, the main structural features of
The valve mainly by the valve body, valve cover, valve flap formed. Check the valve flap to open under pressure in the fluid, fluid flows from the import side the export side. When the import side, when the pressure lower than the export side of the valve flap in the fluid pressure in itself under the action of gravity and other factors automatically close to prevent fluid backflow.
3, the main technical performance specifications
6, storage, installation
1, in the course of the removal handle with care, not allowed to crash. Long-term storage, should be placed in a cool dry place, do not allow open storage or stacked.
2, valve installation should pay attention to the following:
Wipe the dirt attached to the valve;
Check the condition and the valve pressure, temperature, corrosion-resistant are matched;
Check the various parts of the valve is loose or damaged fasteners;
And valves connected to both sides of the pipe flange to be parallel, in-line;
In the fastening flange bolts when fastening symmetric alternating;

Open and close smoothly and reliable sealing
Aesthetic integrity of high-quality services