Carbon Steel Spectacle Blind Flanges are mechanical joining devices that can be used for various applications. These flanges are generally made from low-alloy and Carbon Steel to provide an efficient seal and chemical and thermal resistance. They have two discs connected by a spacer designed to keep the flow in balance between two parts of a pipe run or between pipes, valves, pumps, etc. It is important to note that these flange types must be used with gaskets before installation because they do not contain any sealing elements. Furthermore, ASTM A694 Spacer ring or Spacer Blind Flagnes are special type ASTM A105 spectacle blinds that are applied when the usual flat face blanks cannot fulfil the requirements, such as when there is a need for high axial loads in pumped systems like unidirectional flow valves. They also result in reliable seals even at higher temperatures and pressures than normal spectacle blinds can handle due to their increased strength compared to regular flat-face blinds.
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