Our valve and flange jackets are designed to save energy and heating costs, for frost and weather protection and to provide burn protection up to 1000c. Thermal Insulation Covers Ltd , are a Midlands based company that specialize in the design, manufacture and installation of insulation covers. Our tailor made jackets are easy to refit and have easy quick-release fastening for easy maintenance access Our valve and flange jackets are designed to save energy and heating costs, for frost and weather protection and to provide burn protection up to 1000c.