1, installation and protection during the installation, the valve disc to stop in the closed position. 2, stem diameter, to turn more kind of rising stem valves, if allowed through the largest stem diameter can not be through the stem of the valve, it can not be assembled into the electric valve. In two position adjustment, reducing channel, low noise, have spirit cave and gasification phenomenon, the leakage of a small amount into the atmosphere, with abrasive medium, can choose butterfly Industrial Valves. Throttling under special working conditions, or require tightly closed strict, or severe abrasion, low temperature, Cryogenic) Use of butterfly valve, such as operating conditions need to use special preset metal tightly closed with conditioning sometimes justice or double unjustly special butterfly valve. Strengths 1, electric butterfly valve opening and closing prompt, convenient save Labour, fluid resistance small, can often operate. Because butterfly valve in the pipeline pressure loss is bigger, about three times the gate valve, because this when choosing butterfly valves, piping system should fully consider problem is affected by pressure loss, should also consider problems closing butterfly plate for pipe combination of medium pressure tightness. Q: how to choose electric butterfly valve? Answer: 1, the output shaft rotational laps: output shaft rotation of electric valve laps of number and nominal diameter of the Industrial Valves, the valve stem pitch, turnbuckle Numbers, according to M = H/ZS computing ( M for electric device should be satisfactory to the total number of rotating ring, H is height of valve opens, S for stem drive turnbuckle pitch, Z turnbuckle stem Numbers) 。 In local turning valve and turn the valve more non-rising stem valves, although need not think stem diameter after problems, but also should fully consider when selecting problem stem diameter and the size of the keyway, that after assembly can normal office. 4, the text should be installed according to the manufactory to install, and weight of big butterfly valve, should set up a solid foundation. 2, electric butterfly valve has simple structure, big and small, light weight. Above is the main according to the choose and buy electric butterfly valve, expect the choose and buy of Shanghai Gardner valves manufacture enterprise supply some help to you. Low pressure by ( Small pressure difference) , introduction to choose butterfly valve. 2, open position should be according to the rotation of the disc corners to confirm. Butterfly valve structure length and the overall height smaller, opening and closing speed, and have a satisfactory curb the special nature of the fluid, the structure principle of butterfly valve is the most to adapt to the manufacture of large diameter valves. Because of this, the inner diameter of the hollow output shaft electric actuator must be greater than rising stem valves stem diameter. Lack of 1, the use of pressure and temperature range is small. When require butterfly valve stem flow using, the matter is accurately choose the size and type of butterfly valve, can make it properly, to office work. 。 3, a moment: operating torque is selecting the main parameter of electric valve, electric valve output torque should be valve operation maximum moment of 1. 2 to 1. 5 times. This, be sure to ponder question resilient seat materials at high temperatures to office temperature limit. Center line butterfly valve, throttle, regulation and mud water medium, shorter demand structure, opening and closing speed ( 1/4 turn) 。 4, operating thrust: the host structure of electric valve has two kinds: one kind is not equipped with arrangement of thrust plate, direct output torque; The other is a worthy Marine valve thrust plate, the output torque after thrust plate of stem nut to change for the output thrust. Electric butterfly valve is suitable for use in demand flow control applications. 4, electric butterfly valve under low pressure, can successfully achieve satisfactory tightly closed. 5, electric butterfly valve regulating performance is good. 3, electric butterfly valve can transport mud water in the tube corner store up least liquid. 2, less tightly closed. 3, the butterfly valve with a bypass valve, open the bypass valve should be taken before opening. 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.
double flanged gate valve are among the best and the long known , which plays an essential part in automatic manufacturing.
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