Valve protection sleeve is custom-made of high-temperature and corrosion-resistant composite fabric, resistant to high and low temperature, heat-insulating, flame-retardant, corrosion-proof and aging-resistant, fully protecting valve equipment and prolonging service life. It adopts detachable design for quick assembly and disassembly without affecting daily maintenance. Suitable for various industrial valves and flanges, resisting high temperature, corrosion and dust, widely used in chemical, electric power and HVAC industries.