When the manual valve is set to a position, namely people confirmed that set the 'flow' Kv namely manual control valve flow coefficient, flow G = Kv ( P2- P3) After, Kv, Kv set, as long as the P2 - P3 is unchanged, the flow rate G. 。 Utility is to set flow regulating valve group, semiautomatic balancing valve group utility is to keep the flow fixed eternal. Normal flow pressure difference before and after the valve in 20 - The range of 300 kpa internal energy according to the set value work stem flow. When the pressure is less than 20 kpa, stem flow reach the set value; More than 300 kpa pressure difference, likely initiation noise. When the system flow increase, P2— P3) The real value of more than the allowed for a given value, this time through the pressure sensitive film and spring utility make semi-automatic regulator set of semi-automatic down, until traffic from new to set up traffic, and vice versa. Marine valve flow valve semi-automatic adjusting flow depends on the performance of the spring at the office of work scope. Q: traffic stem valve principle of answer: flow valve is controlled by a manual control valve and a semi-automatic balance Industrial Valves group. Office system of fluid pressure for P1, manual control valve pressure before and after another for P2 and P3. 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 valve, oil valve, hydraulic control valve and other kinds of valves.
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