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The appearance and working principle of ammonia stop valve
Ammonia shut-off valve often use oxygen, nitrogen, hydrogen, argon and other gases. These gases are usually stored in a special high-pressure gas. Through the use of ammonia valve to make the gas pressure down to test the required range, and then fine-tuning through the other control valves, so that the use of gas input system. The most commonly used pressure reducing valve is ammonia shut-off valve, referred to as ammonia valve. The high pressure chamber of the ammonia valve is connected with the cylinder, and the low-pressure chamber is the gas outlet, and leads to the use system. The indication of the high pressure meter is the pressure of the gas stored in the cylinder. The outlet pressure of the low pressure gauge can be controlled by adjusting screw.
When the utility model is used, the main switch of the cylinder is first opened, and then the pressure regulating screw of the low pressure table is rotated clockwise to compress the main spring and drive the thin film, the spring cushion block and the mandril to open the valve. In this way, the imported high-pressure gas is reduced into the low pressure chamber by throttling through the high-pressure chamber, and then exported to the working system. The screw is adjusted to change the opening height of the valve so as to regulate the passing amount of the high pressure gas and reach the required pressure value.
Ammonia stop valves are equipped with safety valves. It is a device to protect ammonia pressure reducing valve and make it safe to use. It is also a signal device for ammonia pressure reducing valve. If the valve pad, valve damage or due to other reasons, leading to the export pressure rise automatically and beyond a certain allowable value, the safety valve will automatically open the exhaust
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