How to use the check valve when the size of the pressure?
When using check valves, the magnitude of the pressure shall correspond to the pressure level of the pipe
1, the use of check valve, the pressure level should be the size of the pipe corresponding to the pressure level.2, check valve and other valve class, the pressure levels for 0.6Mpa, 1Mpa, 1.6Mpa, 2.5mPA, 4mPA, 6 Mpa...... Wait。 If your pipe is between standard pressure, use a higher pressure grade. Such as: pipe pressure 1.8Mpa, the minimum choice of 2.5Mpa check valve.
1) check valve: generally applicable to clean medium, should not be used for containing solid particles and viscosity medium.2), for the low pressure below DN50mm check valve, check valve should be selected on the clip, vertical lift check valve; for DN is greater than 200mm, less than 1200mm in the low pressure check valve, should use micro slow close check valve, water hammer eliminating buffer device with valve and check valve; for the low pressure DN is greater than 50mm, less than 2000mm should use check valve, butterfly valve and swing check valve.3), micro slow close check valve for easy to produce water hammer piping on the micro resistance slow closing system can well eliminate the media generated when the water hit counter, but limited by the temperature and pressure, generally used in low temperature pipe.4) for the closing of the water shock or small impact of the water pipeline, it is appropriate to use micro resistance slow closing check valve and buffer butterfly check valve.
