we valve installation work, in order to prevent metal, sand and other foreign body into the valve and damage the seal face, must provide the filters and flush valve; In order to keep the compressed air purification, need water separator before the valve or the air filter; In order to check the working state of the valve, in the process of running need to set up the instrument and check valve; In order to keep the working temperature, outside the valve installed insulation device; After installation of valve, relief valve or check valve; Considering the continuous operation of the valve for danger, paralleling system or bypass system is established.

1, the pressure reducing valve installation of protective measures

pressure reducing valve device usually has three forms. The pressure reducing valve before and after the installation of pressure gauge in order to observed before and after the Industrial Valves pressure. Behind the valve and a totally enclosed, relief valve can prevent the valve to the valve pressure than normal pressure after failure, including valve system. Drainage pipe installation in front of the valve in front of the valve, it is mainly used for flushing river, while others use steam trap. The main functions of the by-pass pipe failure after the pressure reducing valve is closed pressure reducing valve before and after the cut-off valve, open the bypass valve, manual regulation flow, remove or replace the relief valve pressure reducing valve for the time being.

2, the check valve installation of protective measures

in order to prevent the check valve leakage or medium after the failure of reflux, quality of products, such as accidents of adverse consequences. Before and after the check valves provide one or two stop valve. If you provide two cut-off valve, then can easily remove the check valve for repair.

3, the relief valve installation of protective measures

globe valves are not usually installation method before and after the installation, and can only be used in individual cases. If the medium containing solid particles, after the jump cannot close influence safety valve, relief valve installed with seal gate valves before and after. Gate valves should be in the fully open position. Gate Industrial Valves and relief valve installed directly. Check the 3/4 'into the atmosphere.

when such as discharge the medium at room temperature for the solid wax, or a will such as light liquid medium in relief when the temperature drops to less than 0 degrees Celsius, the relief valve need to steam heating.

the safety valve of corrosive medium, according to the corrosion resistance of the valve, considering at the entrance of the valve use explosion-proof membrane corrosion resistance.

gas valve according to its diameter usually set a by-pass valve as a manual ventilation.

4, trap installed protective measures

there are two kinds of steam trap side by-pass pipe and without by-pass pipe. Condensed water recovery and condensed water is not used for recycling, steam trap drainage and other special requirements can be installed in parallel.

drain valve with a bypass valve, it is mainly used for running out a large number of condensed water in pipes. Maintenance of steam trap, unfavorable use bypass discharge of condensed water, which can lead to steam into the return system. Under normal circumstances, may not install by-pass pipe. Only strict with heating temperature and heating equipment installed in the by-pass pipe continuous production.

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