Regarding the issue of double-acting vs. single-acting bottom valves in reaction vessels
Thread Content
I wonder why a double-acting type is used for the foot valve, and why not a single-acting one. I hope the experts here can explain the reason. ! ! !
This generally depends on the operating environment. If there is high pressure in this reactor and the valves have high closing force, then using a single-acting valve would be risky; a double-acting valve relies on pneumatic power for both opening and closing, while a single-acting valve uses pneumatic power only on one side, with the other side being operated by a spring
What I encountered: 1. Pharmaceutical factory kettles, with low pressure/diameter and many springs. 2. Chemical reaction kettles come in both spring-type and double-acting types. The starting point for consideration is that a larger diameter results in a longer spring actuator (some reaching 2 meters in length), greater weight, and difficulties in installation and maintenance. As for the safe position for air loss, a double-acting type with an air storage tank will suffice; there’s no need to worry too much about it.
It is recommended to use upward-opening bottom valves and tank bottom valves; a jacket as well as cleaning holes can be provided； Germany’s Ritag fully forged bottom valve – worth considering. For more information, please contact 379662240@qq.com