According to the application, the hydraulic directional control valve can be divided into check valve and directional valve. I'll make a brief introduction below.
1.Check valve: only allow the fluid to be connected in one direction in the pipeline, and the reverse is cut off.
2.Reversing valve: change the on-off and off relationship between different pipelines, and divide two or three places according to the number of working positions of the valve core in the valve body; According to the number of channels controlled, it is divided into two-way, three-way, four-way, five-way, etc.; Such as two-position two-way, three-way three-way, three-way five-way, etc. according to the valve core driving mode is divided into manual, motorized, electromagnetic, hydraulic, etc. In the late 60s, electro-hydraulic proportional control valves were developed on the basis of the above hydraulic control valves. Its output (pressure, flow) can change continuously with the incoming electrical signal. Electro-hydraulic proportional control valves are correspondingly divided into electro-hydraulic proportional pressure control valves, electro-hydraulic proportional flow control valves and electro-hydraulic proportional directional control valves according to different functions.
We are Hanjiu, a professional valve manufacturer. In terms of design, our R&D team chose to spray polymer material in the display of the valve, which is essentially a polymer, so that the surface of the valve forms a hydraulic smooth surface, and the surface finish of the ultra-smooth surface coating is 20 times that of polished stainless steel. The compactness of the molecular structure of this coating can fully isolate air, water, various chemicals and other media. Due to its good wear and impact resistance, our hydraulic directional control valve can play a good anti-wear and cushioning role, even when the fine solid particle media is in contact with the pump and impact. This can ensure that the product is not easy to rust and durable; It can also minimize electro-chemical corrosion and rust; Last but not least, our valves are compact and leak-free.
In terms of quality, we produce valves from cast iron, stainless steel, carbon steel, alloy steel, nickel alloy and other materials. We have more than 400 sets of casting, forging, welding, assembly, nondestructive testing and other production and adding equipment and test and testing equipment, and have obtained ISO9001, API607, EU CE, British DNV, German TUV PED and other certifications, with an annual production capacity of 6,000 tons of castings and more than 1 million hours of machining, and the products sell well in more than 30 countries and regions around the world.
So if you have related needs, please feel free to contact us!
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