Due to the wide range of applications of the valve, different conditions will have different requirements on the valve, in order to speed up the efficiency of inquiry, to avoid unnecessary duplication and controversy, it is recommended that customers in the inquiry or order can want to buy valve made Clear description. The following is a recommendation for ordering a valve: 1. Nominal diameter of the pipe connected to the valve. 2. Valve usage conditions, installation environment, fluid medium, medium temperature range, pressure range. Pressure - Temperature Ratings To meet your exact needs, pay special attention to the pressure - temperature rating of your valve. Pay special attention to the sealing material and gasket material, which to a large extent determine the pressure-temperature rating of the valve. According to the actual needs of the designated sealing material and precipitation materials to meet or better than the actual needs. 3. The type of valve gate valve, globe valve, check valve, ball valve, butterfly valve, regulating valve, etc. 4. The valve connection method If the connection method for the welding method, but also to provide pipe wall thickness; if the connection method Orchid, we must provide the flange type. The integrity of the piping system, future routine maintenance, corrosion protection, site assembly, weight and safety all determine the factors that should be considered when connecting a valve to a pipe. 5. Material of the valve The material of the valve body, as well as the different material requirements of the standard configuration. 6. Valve transmission 7. Valve specifications and models 8. Other accessories Anti-acid protective layer, locking devices, bypass valves, etc. 9. Other requirements