Is an electric three way valve and a three way control valve a type of valve

Not one. The electric three-way valve only plays the role of a switch.

The three-way control valve is composed of a straight-stroke electronic electric actuator and a three-way confluence (divert) valve with a cylindrical thin-walled window-shaped spool. It has compact structure, light weight, sensitive action, accurate flow characteristics, and can directly accept the control signals (4-20mA DC 0-10mA DC or 1-5V DC) and single-phase power supply input from the regulating instrument to control the operation, realize the automatic adjustment and control of the fluid medium of the process pipeline, and are widely used to accurately control the process parameters of gas, liquid, steam and other media, such as pressure, flow, temperature, liquid level and other parameters to keep at a given value. It is suitable for the working condition that one fluid is divided into two ways through the three-way valve or two fluids are combined into one fluid through the three-way valve.

Hello, the electric tee refers to the actuator statement, not the internal structure of the valve, which plays the role of a switch, while the three-way regulating valve refers to the internal structure of the valve that can control how much fluid passes. It regulates the amount of fluid in the pipeline and protects other equipment!

They are not a kind of valve, but the structure is almost identical. It works differently!

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Neway Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

The three-way valve has 3 entrances and exits connected to the pipeline, which is equivalent to two single-seat valves in one. According to the mode of action, it is divided into two types: merging valve and diverter valve, which are as followsFeatures:

1) When the three-way valve is working, one passage is fully closed, and the other passage is fully open, and the force is similar to that of a single-seat valve when closed.

2) The tee is modified from single and double seat valves, and uses the valve core to guide itself, and the actuator must be replaced when the air opening and closing are replaced.

3) Due to the small diameter unbalance force, when DG 80, the merging valve can be used for shunting occasions.

4) The valve core of the three-way valve is the same as the sleeve of the sleeve valve, and its throttling area has two types: opening a large window and punching a small hole (jet type), and the latter has the function of (a) x-type structure (b) q-type structure to reduce noise and resonance.

2. Product characteristics of electric three-way control valve

1. The direction of action of the fluid on the valve core is in the open state, so the working stability is good.

2. In addition to the bushing guidance at the bonnet, the side of the valve core and the inner surface of the valve seat also have a guiding effect, which has a large guiding area and reliable operation.

3. The servo amplifier adopts deep dynamic negative feedback, which can improve the adjustment accuracy.

4. The electric operator has a variety of forms, which can be applied to 4 or 0.

5. The electronic electric control valve can directly control the valve opening by the current signal, without servo amplifier.

6. Save automation investment, compared with single-seat, double-seat or sleeve control valves, the same system can save a valve, simplify the system and save investment.

7. The bellows sealing type forms a complete seal on the moving valve stem and blocks the fluid leakage.

8. The three-way control valve is divided into T type and L type, which divides and merges the medium, and is determined according to the on-site working conditions when selecting the type.

Technical Article - Features of Three-Way Valves.

Features:(1) The electric three-way internal thread ball valve has two and four sealing structures, and the spool orifice has two structural forms: L-type and T-type, which adopts the control of the rotation angle of the spool to change the connection state of the spool orifice and the pipe mouth, so as to realize the different combined control of the three branch pipes. The three-way ball valve has a large flow capacity, which can control gases, liquids, and steam, and is more suitable for controlling high-viscosity, fibrous granular fluids.

It is also suitable for occasions with strict sealing requirements.

2) The two-seat sealed three-way ball valve has compact structure, beautiful appearance and good sealing performance, which can realize the switching of the flow direction of the medium in the pipeline. It is also possible to connect or close two channels that are perpendicular to each other.

3) The four-seat sealed three-way ball valve has beautiful appearance, compact and reasonable structure, which can not only realize the switching of the flow direction of the medium, but also make the three channels communicate with each other, and at the same time can close any one channel, so that the other two channels can be connected, and the flexible control pipeline is the confluence or diversion of the medium.

4) The T-shaped spool orifice can make three orthogonal pipes communicate or switch with each other, and play the role of diversion or confluence; The L-shaped orifice connects two pipes orthogonal to each other. The other orifice is cut off to change the flow direction of the medium.

Xinyurui control valve provides you with technical support.

Nowadays, we are demanding more and more things, and we are the same for the electric three-way control valve, but for people who don't know him, they don't know how to choose, and they are also struggling with how it works? So what should we pay attention to when choosing an electric three-way control valve? Because we don't understand, we are more confused when purchasing.

Let's buy tips and how it works!

1. Operating thrust: There are two main engine structures of the valve electric device: one is that the thrust plate is not configured and the torque is directly output; The other is to configure a thrust plate, and the output torque is converted into output thrust through the stem nut in the thrust plate.

2. Operating torque: The operating torque is the most important parameter for selecting the valve electric device, and the output torque of the electric device should be several times the maximum operating torque of the valve.

3. The number of rotation turns of the output shaft: the number of rotation turns of the output shaft of the valve electric device is related to the nominal diameter of the valve, the pitch of the valve stem and the number of threaded heads, which should be calculated according to M = H Zs (M is the total number of rotation turns that should be satisfied by the electric installation of the first Min Xiao, H is the opening height of the valve, S is the pitch of the valve stem transmission thread, and Z is the number of valve stem thread heads).

4. Output speed: If the opening and closing speed of the valve is too fast, it is easy to produce water hammer. Therefore, the appropriate opening and closing speed should be selected according to different use conditions.

5. Stem diameter: For multi-turn open-rod valves, if the maximum stem diameter allowed by the electric device cannot pass through the stem of the equipped valve, it cannot be assembled into an electric valve. Therefore, the inner diameter of the hollow output shaft of the actuator must be larger than the outer diameter of the stem of the open rod valve.

For some rotary valves and dark rod valves in multi-wise rotary valves, although the passage of the valve stem diameter is not considered, the size of the valve stem diameter and keyway should also be fully considered when selecting, so that it can work normally after assembly.

Working principle of electric three-way control valve:

This kind of self-operated control valve uses the reverse feeding signal (pressure, differential pressure, temperature) at the output end of the valve to be transmitted to the actuator through the signal tube to drive the valve disc to change the opening of the valve, so as to achieve the purpose of adjusting the pressure, flow rate and temperature. This kind of control valve is divided into two types: direct-acting and indirect-acting.

The direct-acting type, also known as the spring-loaded type, has elastic elements in its structure, such as springs, bellows, bellows, bellows, etc., and uses the principle of elastic force and feedback signal balance.

Indirect-acting control valve, with the addition of a commander (pilot valve), which plays the role of amplifying the feedback signal, and then drives the movement of the main valve disc through the actuator to achieve the purpose of changing the valve opening.

In the case of a pressure regulating valve, the feedback signal is the outlet pressure of the valve, which is introduced into the actuator through the signal tube.

If it is a flow regulating valve, there is an orifice plate (or other resistance device) at the outlet of the valve, and the differential pressure signal is taken out from both ends of the orifice plate and introduced into the actuator.

If it is a temperature regulating valve, there is a temperature sensor (or temperature bag) at the outlet of the valve to drive the actuator through the thermal expansion and contraction of the medium in the temperature sensor.

The above is the electric three-way control valve purchase skills and working principle introduced to you today, and it is over here, I believe that we have a certain understanding of the electric three-way control valve through today's introduction.