What are the commonly used materials for globe valve insulation?

2022-01-29

Globe valve, also known as cut-off valve, belongs to mandatory sealing valve, its opening and closing part is a plug-shaped valve disc, the sealing is flat or sea cone surface, and the valve disc moves linearly along the center line of the valve seat. Globe valve is a common valve that can be used to control the flow of various fluids, such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

Commonly used globe valve insulation materials are as follows:

1. Glass fiber mat. Glass fiber mat is a plate-like product made of chemical binder or continuous precursor or chopped precursor under mechanical action. It is a thermal insulation material with reasonable structure and good performance. It has good high temperature resistance and chemical resistance. Stability, suitable for thermal insulation of various heat sources (coal, electricity, oil, gas) high temperature equipment, cooling and heating equipment valves, and pipelines.

2. Ceramic fiber blanket. Also known as aluminum silicate fiber blanket, because one of its main components is alumina, alumina is the main component of ceramic fiber blanket, so it is called ceramic fiber blanket. Ceramic fiber blankets are mainly divided into ceramic fiber injection blankets and ceramic fiber wire blankets. Due to the long fiber length and low thermal conductivity, the ceramic fiber blanket is mainly used for the insulation material of the globe valve.

3. Aerogel felt. Aerogel felt is a flexible insulating felt made of carbon fiber or ceramic glass fiber wool or pre-oxidized fiber felt with nano-silica or metal aerogel as the main material, with low thermal conductivity, tensile strength and compressive strength It has the characteristics of low temperature and belongs to a new type of insulation material for valves.