What is the purpose of a double-acting fail-safe valve?
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This post was last edited by momofeichen on 2022-1-7 08:52. A valve with a double-action fail-safe mechanism was encountered, and an air reservoir is required. I don’t understand why it’s configured this way; why not use a single-acting fail-safe cylinder instead? Let’s discuss it together
This is related to the requirements of automated control; it is not limited to just the actuators of valves, but also involves solenoid valves used to control directional valves in order to regulate the operation of cylinders in forward and reverse directions. The key lies in the process requirements, for reference only.
This post was last edited by momofeichen on 2022-1-7 08:51. What are the functional differences between dual-action fault shutdown and single-action fault shutdown? The one I encountered is a high-pressure control valve; it’s used to prevent the medium from pushing the valve open in case of a gas supply failure, and that’s why a double-acting fail-safe mechanism along with a gas storage tank is employed.
A single-acting actuator with fail-safe shutdown and an air storage tank – this configuration, combined with the closing force provided by the spring and the air tank, ensures greater safety and faster response! .
Valves that generally need to be designed as double-acting cylinders are those where single-acting actuators are unable to provide the required high thrust, or where very large springs are necessary; in such cases, a double-acting design with an air reservoir is adopted
It is still the on-site technicians who know more; it is necessary to learn from them. For reference.