Design purpose of Butterfly Valve lock spindle

1. What is the lock spindle?

Let's first talk about what this "lock spindle" is. On a butterfly valve (the valve that opens and closes like a butterfly wing), the lock spindle is actually a small mechanism that is specifically used to fix the valve's open and close state. It may be a small pin or a buckle. In short, it is to prevent the valve from being misoperated or accidentally moved.

2. Why do we need to add a lock spindle to a butterfly valve?

Safety first. Imagine a butterfly valve on a high-pressure pipeline in a factory. If someone turns it by mistake, the entire production line may have a big problem. The lock spindle is to put a "safety" on the valve to prevent misoperation.

Status confirmation. After locking, the operator can know whether the valve is open or closed at a glance, without having to make an effort to confirm it. It is especially suitable for occasions that require frequent inspections.

Prevent accidental movement. Some butterfly valves are installed in places with large vibrations. The lock spindle can prevent the vibration from causing the valve position to change, ensuring stable operation of the system.

Easy management. When operation permissions are required, only those who have the key can move the valve, which is equivalent to giving the valve "administrator permissions".

3. The actual application scenarios mainly include chemical plants, water treatment plants, and HVAC. Chemical plants can prevent dangerous media from being released by mistake, water treatment plants can ensure that the water pump system will not be accidentally shut down, and HVAC can prevent valves from being adjusted arbitrarily to affect temperature control.

4. Don't look at it as an inconspicuous little lock, it is an important design to ensure the safe operation of industrial systems. It is simple and practical, perfectly interpreting the principle of "small accessories with big effects".

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