Introduction to the clip butterfly valve
　 The disc of the wafer type butterfly valve is installed in the diameter direction of the pipe. In the cylindrical passage of the butterfly valve body, the disc-shaped disc rotates around the axis, and the rotation angle is between 0° and 90°. When the rotation is 90°, the valve is fully open. The clip-on butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be quickly opened and closed by rotating 90°, and the operation is simple, and the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the disc is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics. The butterfly valve has two sealing types: a spring seal and a metal seal. Elastomeric sealing valve, the sealing ring can be mounted on the valve body or attached to the periphery of the disc. Valves with metal seals generally have a longer life than elastomeric seals, but are difficult to seal completely. Metal seals can accommodate higher operating temperatures, while elastomeric seals have temperature-limited defects. If a butterfly valve is required for flow control, the main choice is the correct size and type of valve. The structural principle of the butterfly valve is especially suitable for making large diameter valves. Butterfly valves are widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems for thermal power plants. This type of valve should generally be installed horizontally in the pipeline. Common butterfly valves are clip-on butterfly valves and flanged butterfly valves. The wafer type butterfly valve uses a stud bolt to connect the valve between the two pipe flanges. The flange type butterfly valve has a flange on the valve, and the flanges on both ends of the valve are connected to the pipe flange by bolts. A, performance comparison of wafer type butterfly valve and gate valve Which of the ordinary butterfly valves and gate valves with the same nominal pressure and the same nominal diameter is better in tightness and is not easy to leak? The sealing performance of the gate valve is better than that of the butterfly valve, but there are also manufacturers whose butterfly valve has good sealing performance. The gate valve is bulky and takes up a lot of space. The butterfly valve is small in size and takes up little space. When selecting specifically, consider the temperature of the medium, the seal of the valve and the packing. The specification specifies a disc valve with a nominal diameter greater than 50 . The wafer type butterfly valve is a *key new product, and the high performance manual butterfly valve adopts a double eccentricity and a special inclined cone elliptical sealing structure. It solves the shortcomings of the traditional eccentric butterfly valve in the moment of opening and closing 0°～10°, and the sealing surface is still in sliding contact friction. The sealing surface of the butterfly plate is separated at the instant of opening, and the effect of closing the contact and sealing is achieved, and the service life and sealing performance are prolonged. Good purpose. B, use Used in the gas pipeline in the sulfuric acid industry: the front and rear blower inlet and outlet, the relay fan inlet and outlet, the electric defogging series and the connecting valve, the S02 main blower inlet and outlet, the converter adjustment, the preheater inlet and outlet, etc. It is used as the preferred brand of valves for sulphur-based sulphuric acid plant. It is considered by the majority of users as: good sealing performance, light operation, side corrosion, high temperature resistance and convenient operation. Flexible, safe and reliable butterfly valves have been widely used. Also widely used in: chemical, petrochemical, smelting, pharmaceutical, food and other industries in SO2, steam, air, gas, ammonia, CO2 gas, oil, water, brine, lye, seawater, nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid The medium is used as a regulating and shut-off device on the pipeline. C, structural characteristics The unique design of the three-way eccentricity makes the friction-free transmission between the sealing surfaces and prolongs the service life of the valve. 2 is elastically sealed by torque. 3 Ingenious wedge design makes the valve have a tighter and tighter automatic sealing function, with compensatory and zero leakage between the sealing surfaces. 4 small size, light weight, light weight and easy to install. 5 Pneumatic and electric devices can be configured according to user requirements to meet the needs of remote control and program control. 6 Replacement parts material can be applied to a variety of media, and can be lining anti-corrosion (lined F46, GXPP, PO, etc.). 7 continuous structure diversification: clamping, flange, butt welding.
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Correct folder formula butterfly valve
