The flange should be inspected on schedule
Stainless steel flange connection is the two pipes, pipe fittings or equipment, first each fixed on a flange, between the two flanges, plus pads, with bolts fastened together, complete the connection. Some pipe fittings and equipment have brought their own flange plate, but also belong to the flange connection. Stainless steel flanges have threaded connection flanges and welding flanges, it is a disc part, the most common in pipe work, the flanges are used in pairs. In plumbing engineering, flanges are mainly used for the connection of pipes. In the pipe that needs to be connected, various installation of a flange, low pressure pipe can be used by wire flange, more than 4 kg of pressure using welding flange. Low pressure small diameter wire connection flange, high pressure and low pressure large diameter are using welded flange, different pressure of the flange thickness and the diameter and number of connecting bolts are different. Stainless steel flange does not produce corrosion, corrosion, rust or wear, is one of the most powerful metal materials used in construction. Because the stainless steel has good corrosion resistance, it enables the structural components to permanently maintain the integrity of the engineering design. Flanges can not be stored for a long time, and should be checked on schedule. Often the exposed processing surfaces should be kept clean, remove dirt, and neatly stored in indoor ventilated and dry places, and stacking or open storage is strictly prohibited. When The flange ball valve, stop valve, gate valve is in use, it is only fully open or fully closed, not allowed to adjust the flow rate, to avoid the erosion of the sealing surface and accelerate the wear. Flange is convenient for materials, simple manufacturing, low cost, wide use; but poor rigidity, so it is not used for chemical process piping system with supply and demand, flammable, explosive and high vacuum requirements and high, extremely harmful occasions. Sealed face type has a plane and protruding surface. Flange structure is simple, small size, light weight; tight and reliable, the ball valve sealing material is widely used plastic, good sealing, widely used in vacuum system, easy maintenance, ball valve structure, generally active, disassembly and replacement, the ball and valve seat isolation from the medium.
