As countries large project construction, make the electric power, petroleum, chemical industry, urban supply and drainage system such as the number of valves is increasing, especially the dosage of the butterfly valve is very big, so the user more problems when use it, at this point, the problems are generalizations, and guide the correct installation and use, hope to be of help. At present, the problems of hard seal butterfly valve has the following categories: a, due to multi-layer soft fold type sealing ring is fixed on the valve plate, when the valve plate normally open state media on the sealing surface to form positive scour, soft sealing strip of metal sandwich after flushing, directly affect the sealing performance. Second, restricted by structure condition of the structure does not adapt to do below path DN200 valves, because the valve plate structure is too thick, large flow resistance. Third, because of the principle of triple eccentric structure, between the sealing surface of valve plate and valve seat sealing is to rely on the drive torque valve plate pressure to the valve seat. Is flow state, the higher the medium pressure seal compression tight. When the countercurrent flow medium with the increase of medium pressure valve plate and valve seat unit is less than the pressure medium, the positive pressure between seal began to leak. At present, the state of elastic hard seal butterfly Industrial Valves without corresponding special standard of flange, we according to the current national standards, in the case of the standards set by the flange size remains the same, the Canon adopt socket type. Flanges diameter and nominal menstruation basic same, this is to increase the effective sealing surface, and to provide favorable and convenient installation, and ensure the normal use. Here, to alert users when using elastic hard seal butterfly valve, the matching of the flange must use special flange, particularly with the valve pressure ring surface matching pipe flange, special flange must be used. Three dimensional partial hardness sealing butterfly valve for water, gas, electric power, metallurgy, chemical industry, municipal and other industries clean or sewage, oil and gas, natural gas, air and other combustible gas pipeline industry, used to cut off or adjust medium flow in.
Shenzhen Mech Valve Trading Co., Ltd. have now make a decision to enlarge our company in other countries.
should only be created by the very best gate valve companies with the training, experience and know how about what is expected of them.
As the full potential of os&y valve lies in , the demand for is increasing globally, and is being adopted across the global market.
Shenzhen Mech Valve Trading Co., Ltd. can reassign work or shuffle around assigned tasks if one team member is overwhelmed while others are not, more effectively managing resources on the fly. With detailed overviews and reports, manufacturers also can more easily stay abreast of new developments.
When selecting the best products for customers, we considered not only the water gate valve, but also the resilient valve.