。 Q: soft tightly closed gate the material requirements of the main local answer: main cover of soft tightly closed gate valve body, valve stem, nut, valve stem, tightly closed, valve shaft. 5, tightly closed the material (1) soft tightly closed gate valve categories are not identical, tightly closed form and the material requirements; (2) the usual wedge gate valve, the material of copper ring, fixed form, grinding should be explained; (3) soft tightly closed gate valve, valve plate rubber lining material and sanitary inspection and physical chemistry numerical; 6, valve shaft packing (1) because the network of the soft tightly closed gate, generally is not opening and closing more, packing in a few years no activity, the packing is not aging, long time maintain tight sealing effect; In (2) the valve packing is also should undertake more opening and closing, tightly closed boast skillful Marine valve effect; (3) in view of the above requirements, the valve shaft packing for lifetime don't change or ten far do not change; (4) packing if need change, pneumatic valve default should ponder question can have water pressure change under the condition of the solution. 4, the valve stem bushing material, its hardness and strength should be half more than the valve stem, and in the condition of bubble in the water and the valve stem, valve body don't form the electrochemical corrosion. Soft tightly closed gate valve of each local material requirement is how? World Industrial Valves network to introduce soft you tightly closed gate in major local material requirements. 2, the valve stem material, hankers after stainless steel stem ( 2CR13) , large diameter valves also should be embedded package of stainless steel stem. 3, nut material see fit, and the use of cast aluminum brass or aluminum bronze ware, and the hardness and strength were greater than the valve stem. 1, body material, should with cast iron, cast steel, stainless steel, 316 l, and indicate the brand and actual values of physical and chemical testing of cast iron. 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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