Installation issues with high-pressure angle valves
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Can high-pressure angle valves in the ammonia synthesis process be designed with inlet on the side and outlet at the bottom? Progressive side exit? In from the side and out the other way? I seek advice from experts!
One of the advantages of angle valves is that they can change direction, so all the situations mentioned by the original poster should be applicable in such cases.
There should be no problem. The installation direction of the angle valve is generally determined based on the actual conditions at the site, taking into account factors such as ease of operation and safety access.
It is installed with the aim of ensuring safe shutdown and minimizing pressure on the packing; it cannot be simply installed arbitrarily. What does ‘entering from the side and exiting from the front’ even mean? The part that faces the handwheel is at the bottom, while the side part is on the sides.
Dear sea friends, is the handwheel installed on the high-pressure side or the low-pressure side? Thank you! ! !
In my personal opinion, the handwheel should be on the high-pressure side. If you take a look at the drawings of the corner valve, you will see that the sealing surface is positioned opposite to the handwheel, that is, the valve stem. In this way, the force itself combined with the pressure of the medium ensures a sealing effect.
The installation of high-pressure angle valves cannot be done arbitrarily; it must be carried out in accordance with the requirements provided by the manufacturer
In the flash vaporization lines, where the pressure drop is high, the valves can be installed in reverse direction to reduce erosion on the valve stems!
It is still determined by the process; the process determines the valve type. Side inlet and low outlet are suitable for media that tend to adhere and be easily washed away. Similar to the flashing conditions associated with waste discharge, directing the flash vapor downstream of the valve and thickening the bottom plate in that area can effectively extend the valve’s lifespan. For typical flashing conditions, having the flow enter from below and exit from above can help reduce damage caused by flashing.
The high-pressure angle valves in ammonia synthesis systems are generally installed with their outlets facing to the side; only in special cases or when process requirements dictate otherwise are they installed with the outlets facing downward. However, this installation method is not recommended, as it imposes higher demands on the quality of the valves and increases the risk of damaging them
Consider the operating conditions; if noise is an issue, adopt noise reduction measures, with air intake at the bottom and exhaust at the side； If cavitation occurs, use side-inside-out protection valve internals. Actually, it mainly depends on the required valve principle and on-site piping layout, etc
Thank you all upstairs; I’ve learned something new
Hello, angle valves must not be installed with the flow direction reversed, as they contain pressure-reducing components whose structure is quite special; flowing in the opposite direction will quickly damage these components. Each angle valve has an arrow indicating the correct flow direction, so be sure not to install it backwards