Electric two-way valve structure installation and working principle

Electric two-way valve is designed for central air-conditioning fan coil supporting products, the drive and valve body composed of two parts, the drive by a synchronous motor drive, with spring return and manual valve opening lever manipulation. Body part of the piston structure. Electric valve can be used with the thermostat supporting the thermostat to control the electric valve motor, the valve on or off to achieve the pipeline cold water or hot water on or off, and then through the fan coil air supply in order to achieve the automatic temperature adjustment .

Electric two-way valve Usage Structure Installation and working principle:

VB-7300 series electric two-way valve for air conditioning and ventilation, heat treatment plant industrial and factory fluid control.

VB-7300 series electric two-way valve structure

VB-7300 series electric two-way valve includes body, bonnet, disc, stem, shaft seal and seal.

Electric two-way valve installation:

1. Install the valve in the flow direction shown

2. Before installing the valve should ensure that the pipeline clean, there is no oxide left when welding.

3. Pipe and valve body must be completely matched. Not subject to vibration.

4. Factories operating with high-temperature fluids (such as steam, superheated water, and diathermic liquids) should be installed with expansion joints to prevent the pipe from expanding and squeezing the valve body.

5. Install the drive vertically on the valve body to prevent the drive from underneath the valve.

6. Allow enough space for routine maintenance to remove the drive from the valve body.

7. Valve can not be installed in the explosion and the ambient temperature is higher than 50 ℃ and below -5 ℃ environment, can not be placed in steam, water jet or drip.

Electric two-way valve is designed for central air-conditioning fan coil supporting products, the drive and valve body composed of two parts, the drive by a synchronous motor drive, with spring return and manual valve opening lever manipulation. Electric two-way valve works is driven by reversible synchronous motor drive, and with a magnetic clutch. The use of the motor through the motor rotor and the clutch generated by the magnetic effect, in the case of quiescence to produce a stable torque. Therefore, when the motor is equipped with current through the stable stalled at any point, when the valve is fully open or fully closed when the magnetic clutch, stop adjusting. The signals from the drive's incremental or proportional controls enable the motor to rotate clockwise or counterclockwise.

Technical Principle Electric two-way valve is composed of temperature sensor, proportional integral temperature controller and electric regulating valve, which is composed of air temperature control system, temperature sensor installed in air supply pipeline, and transmits the detected temperature signal to temperature controller, controlled by temperature The temperature sensor detects the value of the constant value of the constant, while constantly outputting the signal to control the opening of the electric adjustable valve connection is adjustable, and ultimately make the temperature sensor to maintain the measured ambient temperature within the set temperature range.

Classification Features Electric two-way valve It is divided into direct acting and pilot type 2, the scope of application and features are as follows: 1. The drive by a single hysteresis synchronous motor drive, valve spring reset, the valve does not work when the normally closed state, when Need to work, by the thermostat to provide a signal to open, so that the electric valve connected to AC power and action. 2. Used to control the cold or hot water system air conditioning system on or off, to achieve the purpose of controlling the room temperature. 3. Open the valve, chilled water or hot water into the fan coil to provide room air-conditioning or heating, when the room temperature reaches the thermostat set point, the thermostat makes the electric valve power, the return spring to close the valve so that Cut off the flow into the fan coil, closed and opened by the valve, so that the room temperature is always maintained within the temperature control set temperature range. Electric valve actuator and valve threaded connection, after the valve is installed, and then install the drive. Field assembly, flexible wiring, convenient. The planar design of the drive can be installed close to the wall, occupying a small space, the product is durable and reliable, low noise and can work reliably in hot and humid environment often appear in hidden fan coil unit.

Two-way valve, a term for fluid control components, is a control valve with two lines. However, the valve with two lines is not necessarily a two-way valve, the basic characteristics of two-way valve is: two-way on-off! When the two lines can only achieve one direction of conduction, known as the one-way valve. Two-way valve is divided into two kinds of normally open and normally closed: 1. normally open two-way valve usually smooth flow of the valve, the equivalent of a pipeline can be achieved without impeding the flow of fluid, but when changing the valve state, it will shut down Fluid conduction. 2. Normally closed two-way valve usually valve is closed, able to cut off the fluid conduction, when changing the valve state, to achieve fluid flow. Control Category: 1. Manual two-way valve, the valve manual operation required manual, low cost, mostly used in daily life, can also be used in infrequently switch the occasion. 2. Two-way solenoid valve, this valve is equivalent to the solenoid to replace the human valve to achieve continuity, suitable for use in automated production, the relative increase in costs. 3. Pneumatic, hydraulic two-way valve, such valves and solenoid valves are high level of automation of the valve, which has the advantage of being able to achieve greater pressure fluid control, more adequate force, but the cost is higher than the solenoid valve.