How to install pneumatic valves for high requirements

For demanding pneumatic valves, the seam angle is 30 degrees. The seams between the circles are staggered 120 degrees. In addition to the above-mentioned fillers, rubber O-rings (natural rubber resistant to weak alkali below 60 degrees Celsius, butadiene rubber resistant to oil below 80 degrees Celsius, fluoroelastomer resistant to a variety of corrosive media below 150 degrees Celsius) three stacked PTFE rings (resistant to strong corrosive media below 200 degrees Celsius), nylon bowl rings (resistant to ammonia and alkali below 120 degrees Celsius) and other forming fillers can also be used.

On the outside of ordinary asbestos packing, wrap a layer of PTFE raw tape, which can improve the sealing effect and reduce the electrochemical corrosion of the valve stem. When pressing the packing, it is necessary to rotate the valve stem at the same time to keep the surrounding area uniform and prevent it from being too dead, and tighten the gland with even force and not tilt. The maintenance of the valve can be divided into two situations; One is custody and maintenance, and the other is use maintenance.

1) The purpose of custody and maintenance is to prevent the valve from being damaged in the storage or reducing the quality. In fact, improper storage is one of the important reasons for valve damage. Valve storage, should be in order, small valves on the shelf, large valves can be neatly arranged on the floor of the warehouse, can not be stacked randomly, do not let the flange connection surface touch the ground.

This is not only for the sake of aesthetics, but also to protect the valve from breakage. Due to improper storage and handling, the handwheel is broken, the valve stem is crooked, the fixing nut of the handwheel and the valve stem is loose and lost, etc., these unnecessary losses should be avoided. For valves that are not used in the short term, asbestos packing should be taken out to avoid electrochemical corrosion and damage to the valve stem.

The valve that has just entered the warehouse should be inspected, and if rainwater or dirt is entered during transportation, it should be wiped clean and then stored. The inlet and outlet of the valve should be sealed with wax paper or plastic sheet to prevent dirty things from entering. The processing surface of the valve that can rust in the atmosphere should be coated with anti-rust oil to protect it.

Outdoor valves must be covered with rainproof and dustproof items such as linoleum or tarpaulin. The warehouse where the valves are stored should be kept clean and dry.

1. After getting the cylinder, first check whether the cylinder model is correct, check whether the cylinder is open or closed, and usually the installation is off. (Large-diameter valves can also be installed in the open state).

2. Check the rotation direction of the cylinder, rotate the valve counterclockwise, and rotate the valve clockwise.

3. Check whether the center distance of the connecting hole of the cylinder is consistent with the center distance of the connecting hole of the upper flange of the valve when the cylinder is connected with the valve.

4. Check whether the shaft of the cylinder is consistent with the shaft of the valve, and if the shaft is inconsistent, a square sleeve can be installed.

5. The cylinder should be consistent with the valve state during installation. (Note that one cannot be in the open state and the other is in the closed state, otherwise the valve will rotate in the opposite direction).

6. Installation status: The valve and the actuator are installed at 90 degrees. The ball valve is installed in parallel with the actuator.

7. If you need to install the solenoid valve after installing the pneumatic actuator, pay attention to whether the O-ring on the solenoid valve is in good condition.

8. After installation, ventilate to see if the valve is fully closed, otherwise remove the solenoid valve and rotate 180 degrees to reinstall. (No special requirements, after installation, it is in a fully closed state).

1. The first bai first proofreads whether the valve model is consistent with the working conditions, and pays attention to the connection size and medium flow direction to ensure the consistency with the special requirements of the valve;

2. It is necessary to carefully check the inner cavity and sealing surface of the valve, and it is strictly forbidden to have dirt or sand particles attached;

3. Before installing the valve, be sure to reserve the necessary space for valve drive;

4. The valve must be installed vertically and cannot be reversed;

5. During installation, the valve disc should stop at the closed position;

6. Tighten the bolts of each connection part evenly to avoid loosening;

7. Carefully inspect the packing part, and ensure the sealing of the packing while also ensuring the flexible opening of the ram;

8. It should be installed according to the installation instructions of the manufacturer, and a firm foundation should be set for valves with large weight.

2. The installation direction of the pneumatic control valve is to be installed on the horizontal pipeline, and perpendicular to the pipeline up and down, and generally to be supported under the valve. For special occasions, when the pneumatic control valve needs to be installed horizontally on the vertical pipeline, the pneumatic control valve actuator should also be supported. During installation, it is necessary to avoid additional stress on the actuator of the control valve, resulting in a shortened service life of the valve body and actuator.

The basic precautions for the installation of pneumatic valves have always been the focus of attention of many businesses. It can be said that pneumatic valves may be used in different industries. The role played by such a structure is crucial.

It includes the flow of different forms of substances, such as liquid, air, steam, oil, slurry, oil and other media.

Now there are many different pneumatic valve products on the market, so that more fields and industries can be chosen by businesses. Let's take a brief look at the basic precautions for pneumatic valve installation.

Clause. 1. Before installation, we must carefully check the model of the pneumatic valve and the relevant parameters and specifications to see if it meets the technical requirements of the installation site environment.

Clause. Second, it is also necessary to check all parts of the pneumatic valve, such as whether the position indicator is normal, whether the cylinder is damaged, etc. Make sure all structures are intact.

Clause. 3. Before the installation of pneumatic valves, each pipeline must be cleaned. If there are certain impurities in the medium to be controlled, then a filter valve that meets the standard should be installed in the valve pipeline.

Clause. Fourth, if the pneumatic valve is installed, there is a phenomenon of heat or high temperature during the trial operation. At this time, the relevant staff should remember not to touch it at will. Instead, look to see if there is an error with the steps or programs installed.

Clause. 5. For the installation direction of pneumatic valves, it must be installed according to the arrows marked on the valve body. In addition to defibrillation, the interface of the pipe and valve that meets the standard must be connected to ensure that the position of the connection is handled with good sealing performance.

Clause. Sixth, Weilao for the pneumatic valve installation process required sealing rings, seals, springs, bolts and other different parts, should be installed in place at one time. Whether it is installing or disassembling parts, keep the force as uniform as possible, and remember not to use too much force, which may cause damage to the valve body or related structures.

In the 21st century, countless industries and businesses have begun to use the pneumatic valve of the eggplant. The installation of this kind of equipment can be said to be very critical for the work efficiency in the later stage. Therefore, you should know more about pneumatic valves before installation.

The above points are a brief summary of the basic matters that we should pay attention to in the installation of pneumatic valves. I hope to help you have a deeper understanding of the correct installation method of this type of structure, so as to make the later operation and operation more stable and reliable.

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Here are some 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, Chaoda, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only the role of estimation and banquet reference, 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 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 changing 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.

Summary. 1.The installation position of the pneumatic control valve requires a certain height from the ground, and a certain space should be left up and down the valve for disassembly and repair.

For control valves equipped with pneumatic valve positioners and handwheels, it must be easy to operate, observe and adjust. 2.The control valve should be installed on the horizontal pipeline, and perpendicular to the pipeline up and down, and generally supported under the valve to ensure stability and reliability.

For special occasions, when the control valve needs to be installed horizontally on a vertical pipeline, the control valve should also be supported (except for small diameter control valves). Install it in such a way as to avoid additional stress on the control valve).

1.The installation position of the pneumatic control valve requires a certain height from the ground, and a certain space should be left up and down the valve for disassembly and repair. For the regulating valve of Kaizao coarsely equipped with pneumatic valve positioner and hand wheel, it is necessary to ensure that it is easy to operate, observe and adjust.

2.The control valve should be installed on the horizontal pipeline, staring at the town and perpendicular to the pipeline up and down, and generally supported under the valve to ensure stability and reliability. For special occasions, when the control valve needs to be installed horizontally on the vertical pipeline, the control valve should also be supported (except for small-diameter control valves).

Install it in such a way as to avoid additional stress on the control valve).

Did it work? If you're satisfied, I'll be relieved to do other things.

(1) Before the pneumatic valve is installed and used, the valve must be inspected before installation and the switch operation test must be carried out. It can only be installed and used under the condition of normal operation.

2) The installation of pneumatic valves should be as concentric as possible between the valve and the pipeline flange, and the support should be fixed. The ball valve should not be subjected to other external forces, so as not to damage the middle seal of the valve and deform the valve. As a result, the valve switch is ineffective and the valve is damaged and cannot be used.

3) To ensure that the power source provided by the balloon valve and pneumatic components must be clean, as free of oil and water as possible. Cleanliness should be less than microns.

4) Before connecting to the air source, the air supply pipeline, air source interface and switch and other devices must be cleaned to prevent failure caused by dirt and sediment rushing into the pneumatic actuator due to unclean pipeline.

5) The connection of pneumatic actuators, solenoid valves, positioners, filters, pressure reducing valves, etc., can be copper pipes or nylon pipes, in order to prevent dust and reduce noise, the exhaust port should be installed with mufflers or muffler throttle valves.

6) After installation, the pneumatic valve should be tested, the pneumatic actuator should be pressurized to the rated value, the pressure is, the pneumatic ball valve should be tested on and off, and the opening and closing of the valve should be observed. It should rotate flexibly without jamming. If there is a jamming phenomenon in the switch, the air pressure can be increased, and the repeated switch can make the valve adjust to the switch flexibly.

7) When installing and debugging the on/off pneumatic valve, first use the manual device (manual button on the solenoid valve) to debug, and then debug after the operation is normal.

8) The pneumatic valve should be regularly maintained at the rotating place of the valve stem, and the oil (oil) should be refueled once every three months. Regularly discharge water and sewage from the pneumatic actuator and the air filter used together. Under normal circumstances, it will be inspected once every six months and once a year.

Summary. Hello, I have helped you find the result: Pneumatic valve air source pressure reducing valve is recommended to be installed vertically, because vertical installation can make the movement of the internal parts of the pressure reducing valve more stable, reduce the wear of the internal parts, and prolong the service life.

At the same time, the vertical installation can also avoid the liquefaction of the gas during the decompression process and ensure the decompression effect. If horizontal installation is required, it is necessary to ensure that the inlet and outlet of the pressure reducing valve are on the same level to avoid affecting the pressure reduction effect. The above is all my reply, I hope it can help you, I wish you a happy life!

Dear Hello, Shiqing has helped you find the results: Pneumatic valve air source pressure reducing valve is recommended to be installed vertically, because vertical installation can make the movement of the internal parts of the pressure reducing valve more stable, reduce the wear of internal parts, and prolong the service life. At the same time, the vertical installation can also avoid the liquefaction of the gas during the decompression process and ensure the decompression effect.

If horizontal installation is required, it is necessary to ensure that the inlet and outlet of the pressure reducing valve are on the same level to avoid any loss of shadow on the pressure reduction effect. The above is all my reply, I hope it can help you, I wish you a happy life!

Is there a specification? Hello, generally speaking, pneumatic valves air source pressure reducing valves should be installed vertically. This is because the vertical grip installation can ensure the stability and accuracy of the compressed pressure reducing valve during operation, and at the same time, it can also avoid damage to the internal parts of the compressed pressure reducing valve due to gravity.

In addition, the vertical installation can also facilitate the discharge of liquid water and oil in the gas, avoiding the impact on the system. Although there is no clear specification requirement, in actual engineering, the principle of vertical installation is generally followed. If the water section must be installed quietly and flat due to site constraints and other reasons, it is recommended to use a special horizontally installed air source pressure reducing valve, and pay attention to adjusting its installation angle and position to ensure its normal operation.

I hope my reply helps!