Each and every hydraulic machine requires and uses hydraulic valves for varying purposes. Some machinery requires few simple valves for execution, whereas, the others require dozens of complex valves. They are available in a variety of sizes according to the international standards. So, the valves are selected depending on its applications. In this article, we provide you 5 tips that you want to remember when you buy a hydraulic valve.
A hydraulic valve act as an important component in the hydraulic machinery that affects the performance and efficiency of the system. These hydraulic valves are used in hydraulic systems to direct the flow of fluids and to switch at a certain pressure. The direction of flow of liquid is determined using the position of the spool. The spool can be controlled mechanically or electrically and it is located inside the cylinder bore. These valves must be capable of withstanding 3000 PSI or more fluid pressure, so, they are built using steel or iron. The major role of hydraulic valve is to sustain a balanced state of power dynamics in various mechanical systems.
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Hydraulic valves can be classified according to its functions, working type, inner sealing, controlling and installation mounting. Mounting in pipe lines, with threaded connection as cartridge valves, sub-plate mounting or flange mounting are the different installation mounting available. Commonly, there are 3 types of hydraulic valves, direction control valve (direct the flow of fluid, halt or initiate the flow), pressure control valve (maintain the pressure level), flow control valve (monitor and regulate the rate of flow).
The below provided are the 5 best tips for you to buy hydraulic valve:
1. Know and understand the function of hydraulic valve:
Hydraulic valves are used to control the pressure and flow of hydraulic fluids within the system and can function hydraulically, pneumatically, manually, electrically or mechanically. They play an important role in controlling the function and safety of the equipment. So, a good knowledge of hydraulic valves is vital for buying.
2. Have an understanding of the components:
A hydraulic valve comprises of a bonnet, seat and a disc (to prevent leakages). So, if you have enough knowledge about these components, then, it will be beneficial for you to purchase the best in the market.
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3. Be specific about what you are looking for:
Various types of hydraulic valves are available in the market. But, if you purchase one, always choose the type that fits your system as per the technical specifications and nomenclature. Otherwise, it will cause malfunction of the system.
4. Always pick the right size:
Different manufacturers produce hydraulic valves. But, if you purchase one, don't rely on the manufacturer’s valve flow rating (other than OEM). So, the smartest way to pick the right size is to opt for the Original Equipment Manufacturer. This will improve the overall performance of the system.
5. Choose three-position directional valves (four-way):
In this hydraulic valve, there will be one way for pump, one for reservoir or tank and two for the inlet to the actuator. And it has 3 positions: one normal, one cross way, and one straight way. This arrangement of valves will provide better efficiency.
Dec 1 2018 11:40AM