Purchasing principles and routine maintenance of orbital valves


Orbital valve is a type of directional control valve that plays an important role in instrumentation and engineering. Do you know what problems should be paid attention to when purchasing an orbital valve and how to maintain the orbital valve on a daily basis? Here we take a look.


1. Principles of Orbital Control Valve Selection

(1) According to the process conditions, select the appropriate structural form and material.

(2) According to the characteristics of the process object, select the flow characteristics of the control valve.

(3) According to the process operation parameters, select the appropriate size of the control valve caliber.

(4) According to the requirements of the process, select the required auxiliary devices.

(5) Reasonable selection of implementing agencies. The response speed of the actuator should be able to meet the process


2. Maintenance of track control valve

(1) Valve inner wall

For control valves used in high pressure difference and corrosive media, the valve body wall and the diaphragm of the diaphragm valve are often impacted and corroded by the medium, and the pressure and corrosion resistance must be checked.

(2) Valve seat

When the control valve is working, due to the infiltration of the medium, the inner surface of the thread used for fixing the valve seat is easily corroded and the valve seat is loosened, so attention should be paid during inspection. For valves that work under high pressure difference, it is also necessary to check whether the sealing surface of the valve seat is damaged.

(3) Valve core

The valve core is the movable part during the adjustment work, which is most seriously eroded and corroded by the medium. During maintenance, carefully check whether the various parts of the valve core are corroded and worn, especially in the case of high pressure difference, the wear of the valve core is more serious. (Due to cavitation), attention should be paid. When the valve core is seriously damaged, it should be replaced. In addition, it should be noted whether the valve stem also has a similar phenomenon, or the connection with the valve core is loose.

(4) Diaphragm "O" rings and other gaskets. The diaphragm and "O"-shaped gasket in the control valve should be checked for aging and cracking.

(5) Sealing packing

Pay attention to whether the PTFE packing and sealing grease are aging, and whether the mating surface is damaged, and should be replaced when necessary.


3. A reputable production company

It is also very important to choose a reputable production company, because the quality of the products produced by a good company is guaranteed, and the after-sales service will be much better. You may object to me: the price of the products of the famous brand companies is too expensive! If you ask such a question, it only means that you have not yet discovered this real conscience company - Hanjiu Technology. Hanjiu has been specializing in the production of hydraulic products for more than ten years. They have accumulated a lot of experience, and the products sold have been well received. These products can be 100% of the products produced by Danfoss, Eaton and other companies. Hundreds of replacements, long service life. The advantage of Hanjiu products is that their prices are very low, which will save you a lot of money and get the best products before you spend the least. Who doesn't love such products? If you are interested in related products, please visit Hanjiu's official website www.hjhydraulic.com, where you will find everything you need. I believe you will be rewarded.


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