Insulating flanges are mainly used between gas transmission and distribution pipelines and gas pressure regulating, metering, storage and other equipment. Its main function is to insulate and isolate each section of gas transmission and distribution pipelines, equipment and pipelines, and protect them from chemicals. Corrosion, prolong the service life of pipelines and equipment. The product complies with the SY/T0516-1997 "Insulation Flange Design Technical Regulations" standard.

　　Features

　　1、It has the electrical insulation performance required by the buried pipeline electrical corrosion protection project.

　　2、It can work reliably for a long time under the temperature and pressure required by the pipe transportation medium, and has sufficient strength and sealing performance.

　　3、The structure is reasonable, and the assembly, disassembly and replacement of parts are convenient.

　　Structure and characteristics

　　The old-fashioned type I insulation flange is composed of installing flange insulation gaskets between two butt welding flat flanges and installing insulation sleeves and insulation bolt gaskets on the fastening bolts. The structural assembly diagram is shown in Figure 1. The flange insulation gasket material is made of oil-resistant rubber asbestos board, neoprene rubber board, fabric-based neoprene rubber board and polytetrafluoroethylene. Insulating bolt sleeves and bolt insulating gaskets are made of high-strength phenolic laminated cloth board and cloth pressure tube. Its characteristics are: good rigidity, stable insulation performance, special installation positions are required for special installation, and high cost.