Liquid ammonia is a colorless liquid, with a strong irritating smell of chemicals, so in transport to pay great attention to safety. 

The liquid ammonia crane tube will be used in the liquid ammonia transportation, and the setting requirement of the liquid ammonia crane pipe should also meet the conditions of ammonia transportation. 

Therefore, crane tube manufacturers talk about the design requirements of liquid ammonia crane tube. 

The main results are as follows: 1. The design pressure of the liquid ammonia crane pipe is generally not less than the setting pressure of the safety valve. 

2. The selected pressure gauge should be adapted to the medium in the liquid ammonia crane tube. 

3. The accuracy of the pressure gauge used by the design pressure less than the 1.6MPa liquid crane tube shall not be less than 2.5. the accuracy of the pressure gauge used by the design pressure greater than or equal to the 1.6MPa liquid crane tube shall not be less than 1.6 grade. 

The limit value of the pressure gauge dial shall be 1.5 to 3.0 times the maximum allowable working pressure, and the diameter of the dial shall not be less than 100mm. 

4. The liquid level meter should be installed in a position convenient for observation, otherwise other auxiliary facilities should be added. 

Large liquid crane pipes should also have centrally controlled facilities and alarm devices. 

The highest and lowest safe liquid levels on the level gauge shall be clearly marked. 

In addition, we should understand that the cut-off valve should not be installed between the safety valve and the liquid ammonia crane pipe; in order to realize the on-line calibration of the safety valve, the blasting disc device can be installed between the safety valve and the liquid ammonia crane pipe. 

The calibration and maintenance of pressure gauges shall be in accordance with the relevant provisions of the national metrology department. 

To learn more about the crane pipe, pay attention to the crane tube manufacturer Lianyungang huade Petrochemical Co., Ltd.