Below to crane luffing hydraulic cylinder as an example to discuss the double valve core stem strategy research. Reversing multi-way valve such as load direction has not changed, because the oil side adopted flow stem, we can use hydraulic controlled check valve to the valve on the two-way balanced exchange, so the growth system of safe sex. Crane luffing cylinder in the office in the process of the force, beginning and end of the load direction remain unchanged, because the hydraulic cylinder rod can be taken to control flow with pressure stem, rodless cavity with stem stem strategy. In order to make the load direction change offices can obtain good stem, a PI stem will be used for additional to the rod chamber pressure stem of, when the direction of the load change, rodless cavity pressure will decrease Marine valve; If there will be a pole cavity remain a low pressure, when the load is very large, the hydraulic cylinder to the reverse direction. Stem rodless cavity flow is tested before and after the determination of the petition to the rodless cavity side valve on both sides of the pressure difference, again according to the inflow or outflow flow number, calculate the volume valve core mouth; Rod cavity side sees fit and use pressure stem, keep the side of a low pressure, get more energy saving and efficient. Positive introduce two kinds of simple stem strategy. Such a balanced Industrial Valves can be offset with system, so the growth system safe sex. ( 2) Loading direction is changed in the process of office in this kind of thing, take 'the oil pressure near the stem, the oil side flow stem', pressure in the hydraulic cylinder rod cavity side stem, rodless cavity side flow stem. 。 ( 1) Load direction remain unchanged during the process of the whole office we know that, for the vehicle cranes, excavators, loaders, such as its beginning and end of the hydraulic cylinder in the process of the whole office load direction remain unchanged. Q: double multiple directional control Industrial Valves valve core strategy of two basic stem answer: because double commutating valve core two oil restrict the flexibility of the mouth, the two oil mouth may take traffic into stem, stem or flow pressure stem. Because we are the rodless cavity sees fit and use the stem flow, because the original stem balanced valve used in system can be used a hydraulic controlled check valve to replace. At this point we can increase the PI stem check check the rodless cavity pressure changes, when PI stem device to test to determine the rodless cavity pressure is lower than the reference value set, the growth is rod cavity pressure stem is set by the pressure, thus guarantee system normal office. Suction side pressure stem is to maintain a reference to a lower pressure, growth rate of system on one hand, on the other hand make the system not hair vitality. 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. We've been working on the valve leader in the field of industry, to provide you with the latest knowledge of the valve, the best service, best technical adviser. Thank you for visiting our website, if you have any questions, you can call us, we will be dedicated to provide you with quality services. The factory provides professional ball valve, butterfly valve, gate valve, globe valve, check valve, relief valve, safety valve, Marine Industrial Valves, oil valve, hydraulic control valve and other kinds of valves.
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