domestic brands have a lot of electric valve valve, today small make up to you to introduce foreign electric valve, it's not imported electric valves are good, choice when they need to be careful.

TOP1: import schneider TAC M400M800M400 electric valve actuators can be through the increase/decrease signal can also be 2 - through simulation 10 v control signal to control. Simulation control make drives for rapid positioning. The drive circuit ensures that the running time is the same, regardless of whether the travel switch valve has a problem. You can be easily installed and connect to the valve. It can be installed directly to the TAC control valves, without the need for any installation components. Drives the scope of work rely on the travel switch valve to automatically adjust. The drive circuit and to monitor the adjustment of the valve end position. To provide the drive power is 24 v ac power. Can provide earlier TAC monitor with 16 v dc power supply voltage. Ranked by: hard seal butterfly valve flange to the clamp (beautiful mark manufacturers selling imported electric pneumatic Industrial Valves butterfly valve advantages as follows: 1, convenient and quick for opening and closing, energy saving, fluid resistance small, can often operate. 2, simple structure, small volume, light weight. 3, can transport the mud, the apertures least accumulated liquid. 4, low pressure, can achieve good sealing. 5, good regulation performance. The disadvantage of butterfly valve is as follows: 1, working pressure and working temperature range is small. 2, poor sealing. Butterfly valve can be divided into the form of the structure of offset plate, vertical plate, inclined plate and lever. Can be divided into the form of the sealed type seal and hard seal type two kinds. Soft seal type generally use rubber ring seal, metal hard seal type usually adopt ring seal. According to the connection type can be divided into flange and clamp connection; According to the methods can be divided into manual transmission, gear transmission, pneumatic, hydraulic and electric. TOP3: AZBIL Japan yamatake electric valve VY5302A0042VY5302A0051 electric regulating valve ball Industrial Valves VY5302A0042VY5302A0051 the proportional control valve body, used for hot and cold water control in the hvac system. Combined with MY53X0 series electric actuator is used. Shaft rod: bronze valve core and Industrial Valves body material: stainless steel seat material: teflon gland packing: containing fluorine rubber ( O washers) Gasket: non-asbestos fluid suitable for filling sealing gasket: hot and cold water and glycol solution flow characteristic: percentage features installations such as: vertical or horizontal VY5302A0042CV value of 400. 5 mpa VY5302A0051CV shutoff pressure difference value of 400. More than 5 mpa shutoff pressure differential are introduced three kinds of small make up common to the three kinds of imported electric valve, imported electric valve actuators is how much the unit a good choice.

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