Fluorine-lined ball valve
operation method and maintenance common sense The operation method of fluorine-lined ball valve is as follows: 1) The opening and closing direction of the fluorine-lined ball valve during operation should be closed clockwise. 2) Because the fluorine-lined ball valve in the pipe network is often opened and closed manually, the opening and closing revolutions should not be too many, even the large-diameter valve should be within 200-600 revolutions. 3) In order to facilitate the opening and closing operation of one person, the maximum opening and closing torque should be 240N-m under the condition of pipeline work pressure. 4) The opening and closing operation end of the fluorine-lined ball valve should be a square tenon with standardized dimensions and face the ground, so that people can directly operate it from the ground. Fluorine-lined ball valves with discs are not suitable for underground pipe networks. 5) The display plate of the opening and closing degree of the fluorine-lined ball valve: ① The scale line of the opening and closing degree of the fluorine-lined ball valve should be cast on the gearbox cover or on the casing of the display plate after the direction is changed, all facing the ground, and the scale line is painted with fluorescent light 2. The material of the indicator disc needle can be made of stainless steel if the management is good, otherwise it is painted steel plate, and do not use aluminum skin; 3. The indicator disc needle is eye-catching and fixed firmly, once the opening and closing adjustment Once accurate, it should be locked with rivets. Common sense of fluorine-lined ball valve products (maintenance, maintenance and inspection) 1. The main contents of maintenance work of fluorine-lined ball valve products 1) Cleaning the valve seat sealing system; 2) Re-grease the valve seat sealing system; Adjust the limit of the fluorine-lined ball valve according to the requirements; 5) Switch the fluorine-lined ball valve on and off several times; to ensure the safe operation of the fluorine-lined ball valve, the switching action of the fluorine-lined ball valve is 3 times. 6) Lubricate the valve stem, gearbox and all equipment that needs to be lubricated; 7) Test the leakage of the valve seat seal; 8) Detect the leakage of the fluorine-lined ball valve (accessories, flanges, grease ports and valve stems). 9) Check whether the actuators of the fluorine-lined ball valve are working normally (including gas-liquid linkage actuators, electric actuators, pneumatic actuators and other actuators), and focus on checking the gas-liquid linkage actuators and related supporting systems when checking the RTU valve chamber; 10 ) To deal with and repair the problems existing in the inspection; 2. Inspection of fluorine-lined ball valve products 1. Visual inspection of each fluorine-lined ball valve product and its external parts that need maintenance. 2. Record the nameplate information of the fluorine-lined ball valve product that needs to be maintained. 3. Make the fluorine-lined ball valve product to be maintained in the fully closed or fully open position; 4. Check whether the ball valve body, accessories, flanges and other sealing points exist leakage. 5. Blowing down the fluorine-lined ball valve and regularly draining the fluorine-lined ball valve is an effective means to ensure the cleanness of the valve cavity and the sealing system. The valve should be drained every time the fluorine-lined ball valve is maintained;
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