If the chosen pilot operated relief valve, when tighten the overflow valve pressure regulating screw or handle, valve from unloading to regulating conditions instantaneous, close the main valve core and the overflow valve cover and the main valve complete paper. When the booster to adjust, maintain the main valve core and valve body, a small mouth, from unloading overflow valve main Industrial Valves core position whereabouts to regulating the opening time is experienced by the overflow valve rally behind time. According to space position, the condition of tube placed across things like choose plate, tubular or superposition type signatures pressure valve. And overflow valve has a certain sound. What is said above the noise of the problem can be solved. Such as additional select a relief valve, and take it at point C. Is comprised of the pressure gauge spring tube and overflow valve pilot valve spring initiation resonance. Overflow valve use pay attention to the things of project in the construction of machine tool hydraulic system, the following things should be paid attention to when the overflow valve is installed in the project: pay attention to the Y type pressure relief valve medium pressure relief valve and the Y type utility principle, use the same absolutely. Solutions are mainly: appropriate increase damping hole diameter of main valve core, reducing the lift height of the valve core. At this time to choose cone valve type or straight moving type relief valves. Of the specifications of the overflow valve and setting are the same, when two parallel oil pump, sometimes overflow valve send out strong noise, when the two relief Industrial Valves setting pressure you when I get out of the way to each other, the noise can be basic alleviation. Selection of inappropriate cause hydraulic impact of overflow valve open time is longer than system requirements, can lead to system pressure shock or water hammer. Taboo P type low pressure overflow valve for unloading valve because of the low pressure relief valve without the unloading port, can not be unloading valve with two specifications and setting the overflow valve easy initiation resonance of the same parameter. When the system is on the alert and response pilot operated relief valve is used in the high speed requirement, due to the inappropriate selection of backward for a long time, the overflow valve action quickly. Also need to point out that the pressure gauge in the remote sensing of overflow valve mouth also can not accurately reflect the overflow valve inlet pressure. Q: digital control machine tool selection using the overflow valve? A: digital control machine tool and overflow valve is chosen according to pay attention to the things of project in the machine tool hydraulic system, selection of overflow valve in hydraulic pressure system of the utility, according to its main norm pressure, maximum flow and pressure loss, office properties depending on a parameter and use fixed number of year of the survival of ordinary things, in accordance with the maximum pressure of the machine tool hydraulic system and overflow valve flow, choose from the product sample of the specifications of the overflow valve ( Pressure rating and size) 。 The common basis for system performance requirements choose the valve structure, such as low pressure system can choose pressure valve type of moving, and should choose straight-pilot pressure valve in high pressure system. The pressure gauge should meet in the overflow valve inlet. 。 With reason to solve problems. But pressure is more reliable, smaller overshoot and mechanisms are complex, and the oil inlet and Y, on the contrary, it is important to note that when using will prevent pressure gauge in the hydraulic system of the remote sensing of overflow valve office, if the pressure gauge in the Marine valve the remote sensing of overflow valve, pressure gauge pointer jitter. Numerical control machine tool is the guiding type inlet pressure and pilot valve spring force and the balance of the main valve spring. This explained two setting the same overflow valve initiation resonance easily, should try to prevent as well. When preset machine tool hydraulic system, selection of overflow valve should be paid attention to the following projects: inappropriate selection of the relief valve is not quickly, direct acting and pilot operated relief valve points, straight acting is fluid pressure and spring force equilibrium directly. Overflow valve flow the quota according to the hydraulic pump flow, overflow valve and unloading valve available may not be less than the rate of flow of the pump, as the relief valve can be less than the rate of flow of the pump. Notes to the order: The national standard) A, A: B: product name, model, nominal size medium and temperature, pressure range C: whether there is attachment, delivery time, and special requirements so that we can correct selection for you. Second, if the valve has been selected by design unit of our company model, please order according to the valves parameters directly with our sales center. Three, it is very important when you use the occasion or the environment is more complex, would you please provide design drawings and detailed parameters, our engineers experts will concentrate on review and analysis for you. We can provide you with professional solutions, including design, customization, complete, operation and service. 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