What are the precautions for the installation of float check valves?

1. The disc of the float check valve is disc-shaped, and the rotating motion is made around the rotating shaft of the valve seat channel, because the channel in the valve is streamlined, the flow resistance is smaller than that of the butterfly check valve, which is suitable for large diameter occasions with low flow rate and infrequent flow changes, but it is not suitable for pulsating flow, and its sealing performance is not as good as that of lifting type. Butterfly check valve is divided into single valve type, double valve type and more than half type, these three forms are mainly divided according to the diameter of the valve, the purpose is to prevent the medium from stopping the flow or backflow, weakening the hydraulic impact.

2. Filter the check valve that slides along the vertical centerline of the valve body, the internal thread check valve can only be installed on the horizontal pipeline, and the valve disc can be used as a round ball on the high-pressure small-diameter check valve. The body shape of the butterfly check valve is the same as that of the globe valve (it can be used in conjunction with the globe valve), so it has a large coefficient of fluid resistance. Its structure is similar to that of globe valves, and the body and disc are the same as globe valves.

The upper part of the valve disc and the lower part of the valve cover are processed with the guide sleeve Jane, the valve disc guide Jane can be freely lifted in the valve lamp guide Jane, when the medium flows downstream, the valve disc is opened by the thrust of the medium, and when the medium stops flowing, the valve disc falls on the valve seat by self-sagging, and plays the role of preventing the medium from counterflowing. The direction of the medium inlet and outlet channel of the straight-through butterfly check valve is perpendicular to the direction of the valve seat channel; The vertical lifting check valve has the same direction as the direction of the medium inlet and outlet channel and the valve seat channel, and its flow resistance is smaller than that of the straight type.

3. Forged steel check valve: a check valve in which the disc rotates around the pin shaft in the valve seat. The disc check valve has a simple structure and can only be installed on the horizontal pipeline, with good sealing.

4. Float check valve: a valve in which the disc slides along the centerline of the valve body. Pipeline check valve is a new kind of valve, which is one of the development directions of check valve, which is small in size, light in weight and good in processing technology. However, the coefficient of fluid resistance is slightly larger than that of swing check valves.

5. Compression check valve: This kind of valve is used as a boiler feed water and steam shut-off valve, which has the comprehensive function of lifting check valve and globe valve or angle valve.

In addition, there are some check valves that are not suitable for pump outlet installation, such as foot valves, spring valves, Y-type check valves, etc.

b, Float check valve use and performance specification:

This valve is used as a device to prevent the reverse flow of medium on industrial pipelines.

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 influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, 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 the user's stove.

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 changing rapidly, and the rankings may vary by time and region. For the latest ranking information, it is recommended to refer to industry reports, professional institutions or market research data for more detailed and accurate information.

When it comes to the installation of the water dispenser, there is a small part that can not be ignored, this thing is the float valve, the installation of the water dispenser float valve is also included in a lot of knowledge, for example, the specifications and models of the float valve should match the size of the water tank, in addition to the installation methods and techniques, there are also a lot of skills included, about the installation of the water dispenser float valve, here is a brief summary for you.

The first thing to do in the installation of the water dispenser float valve is to remove the protective cover twice, what is the protective cover, that is, the part that plays a remote control role on both sides of the flange of the water dispenser float valve, and the float valve needs to be flushed when it is fully opened, and then determine the installation position, but in the installed part, there can be no low hanging or pressure on the pipeline, so the pipeline needs to be supported first, one is to prevent the pipeline from being suppressed, and the other is to prevent the deviation of the pipeline.

When installing the float valve, it is necessary to carry out the test, and after passing the test, the float valve is installed, first of all, the water tank and the pipeline need to be cleaned, and the debris in it is removed, and then the float valve is placed in the vertical position of the pipeline, and the float valve in the water tank is connected to the pipeline, pay attention to the specified bolts to connect, and in the whole installation process, be careful not to touch other parts of the pipeline to avoid damage to the accessories.

When installing the float valve, it is necessary to pay attention to the level of the float valve, the horizontal installation is very important, in addition, the water pipe should be fixed in advance, do not shake to the water pipe in the process of installation, in addition, after connecting the float valve, it is necessary to debug it, first open the globe valve, and then open the float valve, when you see that the float valve has been able to operate normally, you can close the float valve, in this process, you need to wait until the water chamber has been filled with water, before you can close the float valve, If you find that the float valve can not be used normally, you should test the tightness of the float valve, and then see how the float valve lifts.

The structure of the remote control float valve is relatively simple, relatively convenient for maintenance, the sealing surface and the spherical surface are often in a closed state, not easy to be eroded by the medium, and easy to operate and maintain. It is mainly used for water tanks and is dedicated to water. Commercial electric heating water boilers, heat pumps, air conditioning cooling towers, water storage towers, water storage tanks, etc., but there are several things to pay attention to when installing as follows:

1. Remove the protective covers on both sides of the flange end of the remote control float valve, and rinse and clean the valve when the valve is fully open. 2. The pipeline near the installation point should not be low hanging or bear external force, and the deviation of the pipeline can be eliminated with pipe brackets or supports. 3. Before installing the remote control float valve, the whole machine should be tested according to the specified signal (electric or pneumatic) (to prevent the vibration caused by transportation from affecting the performance), and the online installation can be carried out only after passing the qualification (the wiring is according to the circuit diagram of the electric actuator).

4. The remote control float valve should be installed in the horizontal or vertical direction of the pipeline. 5. Before preparing to connect with the pipeline, it is necessary to rinse and remove the remaining impurities in the pipeline (these substances may damage the valve seat and ball). 6. After connecting with the pipeline, please cross-lock the flange connecting bolts with the specified torque.

7. During the installation of the remote control float valve, please do not use the actuator part of the valve as the hoisting point for lifting to avoid damage to the actuator and accessories.

Hope it helps, thank you

The check valve is installed in the following way:

1. First of all, it is necessary to maintain the vertical during transportation, and must be lifted at two points, so as to take protective measures for the check valve, and at the same time, the check valve should also be a protective device.

2. Determine the position of the check valve, set the center line, reserve a certain size of holes, make four vertical center lines, and then draw two middle sona mold lines on the floor plane.

3. After it is done, you can install the check valve, first hang the check valve to the roof, and then slowly lower it from the reserved hole, and then install it layer by layer from top to bottom.

4. When installing, the center line should be calibrated, do not deviate from the center line and the positioning of the center line of the reserved hole, the previous deviation should not be greater than 1cm, and each layer should be vertical.

5. During installation, each layer should be load-bearing, and the diameter of the two supporting steel bars should be greater than or equal to 14mm, and then fixed with special glue and cement mixing.

Check valve refers to a valve with a circular disc that relies on its own weight and medium pressure to respond and block the backflow of medium. It is an automatic valve, also known as a standby faux return valve, check valve, return valve, or isolation valve. Valve movement modes include lift and swing.

The poppet check valve is structurally similar to a globe valve, except that it lacks the stem that drives the disc. Then, the car patiently introduced the installation position of the check valve to the friends.

There are two types of check valves, one that is installed at the end of the vertical suction pipe in front of the pump to inject water into the pump once without pumping the primary water. Because the pump can only pump water when there is no water in the suction pipe inside the pump and in front of the pump, the pump must be filled with water to pump water. This type of pump is installed above the liquid level as a method, also known as the negative pressure method, such as pumping water from a well.

Another way to install a water pump is that the liquid level is higher than the water pump, which is mostly used for secondary water supply. Since the liquid level is higher than the pump, it is convenient to start and stop the pump without closing the pump outlet valve, so the check valve should be installed at the rear of the pump.

Principle of operation. Check valves can also be used to supplement piping in paving systems where the pressure may rise above the system pressure. Critical check valves can include swing check valves (which rotate according to the center of gravity) and lift check valves (which move along the axis).

Check valves are this type of valves that allow the medium to flow in only one direction but also prevent the medium from flowing in the opposite direction. Generally, this kind of valve works automatically, and the valve disc opens under the action of one-way flow fluid pressure; When the fluid flows in the opposite direction, the pressure of the fluid and the self-overlapping disc of the disc act on the seat, which will cut off the flow.

What to pay attention to. 1.There is no need to put the check valve under weight in the piping system, and large check valves should be supported independently to avoid being affected by the pressure caused by the piping system.

2.During installation, it should be noted that the direction of the medium flow should be consistent with the direction of the arrow marked on the valve body.

3.The lift vertical flap check valve should be installed on the vertical pipe.

4.The lift horizontal flap check valve should be installed on the horizontal pipe.

Well, today there are so many car series friends briefly introduced the check valve installation position. I don't know if you have a better understanding of the installation location of the check valve after listening to the introduction of the car series. I hope the introduction of Bian Xiao car can be helpful to friends.

Millions of car purchase subsidies.

Hello dear, glad to answer for you! The correct installation method of the check valve is as follows: 1. Attach the check valve to the interface of the two pipe fittings; 2. Dress up the bolts of the check valve to ensure a good connection; 3. Reset the valve according to the instructions shown in the diagram to ensure the correct flow direction of the pipeline; 4. According to the operation instructions, use the pressure gauge to test to ensure that the internal working state of the valve is normal; 5. If the installed valve pipeline has an auxiliary opening device, please install the auxiliary opening device correctly to ensure the correct operation; 6. Before the valve is operated, it is necessary to carry out good lubrication first to reduce the loss of the internal moving parts of the valve code; 7. Make sure all connections are installed firmly to avoid pipeline leakage.

Summary. Hello! Dear Kiss, happy to answer your questions.

The correct installation method of the check valve is as follows: 1. Before installing the check valve, you must carefully check the appearance, brand, etc. of the check valve to see whether it meets the relevant standards stipulated by our country, and the check valve should be tested for strength and tightness, and it can be installed and used only after it is qualified. 2. If you want to install the check valve correctly, the installation height of the check valve and the inlet and outlet direction of the water flow must meet the relevant installation specifications, and the flow direction of the internal medium should be the same as the arrow direction marked on the check valve, and the connection position must be tight and firm.

Hello! Dear Kiss, happy to answer your questions. The correct installation method of the stop-state change valve is as follows:

1. Before installing the check valve, we must carefully check the appearance, brand, etc. of the check valve to see whether it meets the relevant standards stipulated by our country, and the check valve should be tested for strength and tightness, and the sail key can be installed and used only after confirming that it is qualified. 2. If you want to install the check valve correctly, the installation height of the check valve and the inlet and outlet direction of the water flow must meet the relevant installation specifications, and the flow direction of the internal medium should be the same as the arrow direction marked on the check valve, and the connection position must be tight and firm.

3. When installing the check valve, the two ends of the check valve should be observed in detail first, and then the water inlet port of the check valve should be found, and then the water inlet port of the check valve and the water outlet port of the water pipe should be connected together to close the code, and when the water flow flows from the water inlet port of the check valve, the empty state rolls, and the check valve will start to run. 4. The water inlet port of the check valve is usually located in the lower position of the check valve, and the water outlet port of the check valve is generally located in the upper position of the check valve. When the water pressure flowing into the check valve exceeds a certain value, the valve of the check valve will be automatically opened, and the water will flow out of the outlet port of the check valve.