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浙江米勒潔凈設備科技有限公司是國內*生產不銹鋼人孔，蝶閥，隔膜閥，球閥等衛生級不銹鋼材質，采用有不銹鋼304，不銹鋼316L；產品嚴格按照國際標準，經過國際ISO質量管理體系認證，符合FDA認證標準，產品廣泛應用食品，制藥，飲料，乳品，啤酒，紅酒，白酒，雞尾酒等各種衛生潔凈行業。

廠家是安裝在儲罐頂上的安全應急通氣裝置，通常與防火器、機械呼吸閥配套使用，既能避免因意外原因造成罐內急劇超壓或真空時，損壞儲罐而發生事故，又有起到安全阻火作用，是保護儲罐的安全裝置，特別適用于貯存物料以氮氣封頂的拱頂常壓罐。不銹鋼人孔，衛生級不銹鋼人孔，溫州不銹鋼人孔生產廠家具有定壓排放、定壓吸入、開閉靈活、安全阻火、結構緊湊、密封性能好、安全可靠等優點。

，衛生級不銹鋼人孔，溫州不銹鋼人孔生產廠家一般使用304、316L材質的鋼板作為原材料來制作。

The manhole of the non-metallic oil tank is arranged on the top of the tank, and the manhole of the metal oil tank is arranged on the lowest lap of the tank wall. Most of the diameter of 600mm round hole, the center from the floor 750mm, for oil tank cleaning or maintenance personnel access to the tank, also known as the door. Inspection and maintenance of clean tanks at any time using manhole lighting and ventilation. Vertical tank capacity of 5000m & 1; set up 1 to 2 personal holes, 5000m & 2 above set up two personal holes. Manhole installation should be less than 90 ° into and out of the oil pipeline. When only one manhole is provided, it shall be placed opposite to the light-transmitting hole in the top of the tank. When two manholes are provided, one of them shall be located opposite the light-passing hole and the other shall be separated from the first manhole by at least 90 °.

Manhole should be located near the right side of the inlet and outlet pipes, and try to make the manhole is airtight door against the tank room, so that personnel access, maintenance tank and ventilation take over.

Leakage prevention is of particular importance as the manhole is installed on the lowest body ring of the tank. Requires two flanges with the surface must ensure that the flatness, no Gone with the Wind phenomenon. Reinforcing plate and flange should be cut on the whole steel plate without splicing. Flange and cover the processing of a ring, in the construction of special attention to protection. Sealed with 3mm thick asbestos rubber gasket, not allowed to fracture. When installing the manhole cover, tighten the bolts, to both angle and force, to prevent the hole cover deformation.

由于人孔安裝在油罐的*下層體圈上，防滲漏就顯得特別重要。要求兩法蘭結合面必須保證其平直度，無飄扭現象。加強板和法蘭應盡量在整塊鋼板上切割而不拼接。法蘭和蓋板上加工有密封圈，在施工中要特別注意保護。密封用3mm厚石棉橡膠墊片，不允許有折裂。安裝人孔蓋板上扭緊螺栓時，要成對角均與用力，以防孔蓋變形。

浙江米勒潔凈設備科技有限公司