Details Long-buried gate valve: Model: MZ45X-10/16 MZ45X Buried extensions resilient seated gate valve product characteristics of the company's maintenance-free soft-sealing valve is buried Ministry of Construction "construction" Eleventh five "technical bulletin" in the application of these products unique project. The product is available in the construction of the valve directly into the ground, not assembled manhole, reducing road excavation area, space-saving position, keeping the road appearance, reduce the difficulty of construction, reducing construction costs, between the ground and buried according to the depth and valves The distance to do any adjustments. The product is due to the exposed surface of the valve box is small, it is also suitable for indoor underground installation, you can keep the indoor environment beautiful. The product design life of 30 years, with long-term use does not leak, maintenance, etc., but also effectively prevent others to freely switch valve and stealing manhole covers and covers lost due to the occurrence of injuries. Buried MZ45X resilient seated gate valve extensions scope to be used for urban drainage network, residential plumbing, residential plumbing, landscaping, oil, railways, power plants, environmental protection and other industries. Manufacturing practices in line with GB17241.6-1998 valve connection size standards, in line with the length of the valve structure GB / T12221-2005 short series of standards, in line pressure test GB / T13927-2008 requirements. Installation Precautions (Please also refer to installation instructions) soft sealing valve and pipe connections should be kept natural and smooth, to avoid bending forces perpendicular to the pipeline, valve and valve boxes, should remain part of the protective tube mounted vertically. Protection should be installed to ensure that the telescopic extension tube and operating lever reliable connection, valve box valve box top position should be flat with the ground, requires valve extensions valve box at the top of the top distance to 5-10 cm is appropriate. Scope can be used in urban water supply and drainage networks, high-rise buildings, residential quarters, oil, district heating, power plants, environmental protection and other industries. MZ45X Buried extensions resilient seated gate valve manufacturing practices in line with GB17241.6-2008 standard connection size, the length of the valve structure in line with GB / T12221-2005 short series of standards, in line pressure test GB / T13927-2008 requirements. 1, the electric soft seal valve size and type of pipe shall meet the requirements of design documents. 2, the electric soft seal gate valve models should be specified in accordance with the requirements of GB number. If the enterprise standards, instructions should indicate models. 3, the electric soft seal valve job pressure ≥ pipeline working pressure, without affecting the price of the premise, the valve can withstand working pressure should be greater than the actual working pressure pipeline; either side of the soft seal valve closure situations should be able to withstand 1.1 times the value of the working pressure valve without leakage; valve open position, the valve should be able to withstand twice the working pressure valve requirements. 4, soft seal valve manufacturing standards, should explain the basis of the national standard code, if the file should be attached to business enterprise standards, procurement contract. 5, the body material, shall be cast iron, steel, stainless steel, 316L-based, and indicate the grade and cast actual physical and chemical test data. 6, stem material, and strive to stainless steel stem (2CR13), large diameter valves should also be embedded in the package of stainless steel stem. 7, nut material, cast brass or aluminum bronze, and the hardness and strength are greater than the stem. 8, stem bushing material, its hardness and strength shall be not greater than the stem, and is immersed in water conditions and valve body is not the formation of electrochemical corrosion. 9, the sealing surface of the material ① different categories of soft sealing valve sealing methods and material requirements vary; ② ordinary wedge gate valve, copper ring materials, fixation methods, polishing should explain; ③ soft sealing valve, the valve plate lining Physical chemistry and health testing data plastic material; 10, fill valve shaft ① As the pipe network in the soft seal valve, normally not open and close frequently, requiring the filling in a few years of inactivity, not aging filler, long-term effects remain sealed ; ② valve packing should also bear the frequent opening and closing, sealing effect of permanent; ③ In view of the above requirements, fill valve shaft does not seek to change or 10 years for life without replacement; ④ Packing For replacement, pneumatic valves should be designed to Measures replaceable under water pressure conditions. Keywords: Long Buried Gate