How to match the motorized metal seal butterfly valve correctly

With the rapid development of industrial automation, the motorized metal-sealed butterfly valve has become a widely used in chemical industry, metallurgy, urban heating and other industries in the pipeline system automation control products. Its main features are simple structure, convenient operation, fast opening and closing speed. In the selection process of motorized metal seal butterfly valve, the correct match is very important, here we will introduce how to choose the right Denso match.

First of all, according to the use of motorized metal seal butterfly valve occasions and working conditions to choose the appropriate butterfly valve model and specifications. For example, when used in a high temperature and high pressure environment, it is necessary to choose an motorized metal seal butterfly valve that is resistant to high temperature and high pressure; When used in corrosive media, it is necessary to choose a corrosion-resistant motorized metal seal butterfly valve. Secondly, the appropriate caliber and flow coefficient should be selected according to the flow and pressure parameters of the pipeline system. In general, the caliber of the motorized metal-sealed butterfly valve should be the same as or slightly larger than the caliber of the pipeline, and the flow coefficient should be calculated according to actual needs.

In addition, it is also necessary to consider the actuator and control system of the electric butterfly valve. 1, the operating torque is an important parameter to choose the electric actuator, the electric device output torque should be 1.2 to 1.5 times the butterfly valve operating torque, too large loss of the actuator, too small and can not open the valve. 2, the diameter of the hard seal butterfly valve stem is also one of the reference factors affecting the matching of the electric actuator, the diameter of the valve stem allowed by the electric device should be able to pass the butterfly valve stem, or the diameter of the butterfly valve stem matches the size of the keyway. 3, the number of turns of the output shaft of the electric actuator and the output speed. The number of turns of the output shaft of the actuator is related to the diameter of the butterfly valve, the pitch of the valve stem and the number of threads, and the number of turns determines the opening of the butterfly valve. The output speed affects the opening and closing speed of the hard-sealed butterfly valve, and too fast opening and closing is easy to produce water shock phenomenon, so the appropriate opening and closing speed should be selected according to different requirements. 4, according to the use of motorized metal seal butterfly valve to determine the need for explosion-proof, waterproof and other special requirements; The choice of control system should be determined according to actual needs, such as manual control, automatic control, etc.