Soft Seal Butterfly Valve
Working Principle Of Butterfly Valve
The butterfly valve is a valve that opens and closes by rotating the valve stem while driving the disc to rotate. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, mainly rotating the disc 90° for flow control. , when the disc reaches 90°, the valve is in a fully open state. At the same time, the angle of the disc can be changed to adjust the medium flow. It is generally installed in the diameter direction of the pipe. The butterfly valve and the valve stem themselves have no locking ability. In order to effectively adjust the flow rate, a worm gear reducer is required. A butterfly valve equipped with a worm gear reducer not only makes the butterfly valve self-locking, but also changes the operating performance of the butterfly valve and regulates the medium flow rate more accurately.
Pre-installation Instructions For Wafer Butterfly Valve
1. Before installation and operation, use air spray to remove foreign objects on the piping, and clean the inside of the piping with clean water.
2. Carefully check whether the valve usage is consistent with its performance specifications; (temperature, pressure)
3. Check whether there are any debris in the valve channel and sealing surface, and remove them in time;
4. The valve must be installed promptly after unpacking, and please do not loosen any fastening screws or nuts on the valve at will;
5. Wafer-type butterfly valves must use special butterfly valve flanges.
6. The electric butterfly valve can be installed on the pipeline at any angle. For the convenience of maintenance, it is recommended not to install it upside down.
7. When installing the butterfly valve flange, you must ensure that the flange surface and the sealing rubber are aligned, the screws are tightened evenly, and the sealing surface must fit completely; if the screws are tightened unevenly, rubber bulges will appear to block the butterfly plate, or top the butterfly plate. Seizing the butterfly plate causes leakage at the valve stem.
Instructions For Use Of Damper Valve
1. Under the smelting conditions with high temperature and large dust content, the design of the ventilation butterfly valve can adopt a flat inclined plate structure. There is a gap between the butterfly plate and the valve body of this structure. The gap value depends on the valve caliber and process. The conditions of use are determined, and are generally controlled within 0.5% of its channel area, which can meet the installation of ventilation butterfly valves, temperature changes in working conditions, and melting process requirements.
2. Under acid-making working conditions with high temperature and low dust content, the ventilation butterfly valve can be designed with a vertical plate structure. The sealing surface of this structure is easy to process, and the sealing surface gap value is controlled within 0.2% of the channel area. The dimensional accuracy of the valve body and butterfly plate seal pair can meet the design requirements through mechanical processing.
3. For working conditions with high temperature, low pressure and strict sealing requirements, the ventilation butterfly valve is designed to adopt a lever-type planar structure. The sealing pair configuration and butterfly plate running trajectory can meet the process requirements of pipe network equipment with high sealing performance.
Instructions Before Installation Of Wafer Butterfly Valve
Before installation and operation, use air spray to remove foreign objects on the piping, and clean the inside of the piping with clean water.
Carefully check whether the valve usage is consistent with its performance specifications; (temperature, pressure)
Check whether there are any debris in the valve channel and sealing surface, and remove them in time;
The valve must be installed promptly after unpacking, and do not loosen any fastening screws or nuts on the valve at will;
Wafer butterfly valves must use special butterfly valve flanges.
The electric butterfly valve can be installed on the pipeline at any angle. For the convenience of maintenance, it is recommended not to install it upside down.
When installing the butterfly valve flange, you must ensure that the flange surface and the sealing rubber are aligned, the screws are tightened evenly, and the sealing surface must fit completely; if the screws are tightened unevenly, rubber protrusions will appear to block the butterfly plate, or resist the butterfly plate. The plate causes leakage at the valve stem.
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