Manual butterfly valve how to switch operation

The manual butterfly valve is a common type of valve that is controlled by manual operation to open and close the valve. In industrial production and piping systems, manual butterfly valves play an important role, so understanding how to properly operate them is crucial. This article will introduce the operation procedure of manual butterfly valve in detail, including preparation work, switching mode, precautions, etc.

First, manual butterfly valve switch operation steps

The switching operation of manual butterfly valves is generally divided into the following steps:

1. Preparation: Before starting the switch operation, some preparation work needs to be done. First of all, ensure the safety of the working environment and avoid accidental injuries during operation. Secondly, check the working condition of the valve and related pipelines to ensure their normal operation, and remove debris around the valve.

2. Mark the valve position: Before starting the switch operation, it is necessary to clearly mark the opening and closing position of the valve. This can be achieved by placing a sign on the valve or using an indicator so that the operator can accurately understand the status of the valve.

3. Operation handle or gear: The switching operation of the manual butterfly valve is generally carried out through the handle or gear. When operating, rotate the handle or gear to the corresponding position as required, and then push or pull the handle or gear.

4. Observe the valve status: When switching operation, it is necessary to continuously observe the status of the valve. It can be determined whether the valve is open or closed by the sign or indicator on the valve, or by the position of the operating handle or gear.

5. Positioning the valve: After opening or closing the valve to the desired position, it is necessary to lock the handle or gear in the corresponding position to ensure that the valve remains stable and to prevent accidental opening or closing.

Second, manual butterfly valve switching mode

There are generally two kinds of switching methods for manual butterfly valves, namely rotary switch and push-open close.

1. Rotary switch: In this way, the handle or gear needs to be rotated to control the opening and closing of the valve. This method is relatively simple, flexible operation, suitable for small butterfly valves.

2. Push open close: In this way, the handle or gear needs to be pushed and pulled to control the opening and closing of the valve. This way is relatively difficult to operate compared to the rotary switch, and is suitable for large butterfly valves.

Three, manual butterfly valve switch operation precautions

When performing manual butterfly valve switching operation, special attention should be paid to the following points:

1. Operation strength: When performing switch operation, it is necessary to maintain appropriate operation strength, not too large or too small. Too much force may lead to valve damage or operating device failure, too little force may lead to improper operation or leakage.

2. Observe the valve status: When switching operation, always observe the status of the valve to ensure that it is fully opened or closed to avoid affecting the normal operation of the pipeline system.

3. Maintenance: Regular manual butterfly valve maintenance, check the operating handle or gear wear condition, clean the debris around the valve, and lubricate the relevant parts to ensure its normal operation.