Butterfly Valve Seats
Application: Valve industry. According to customer experiments, it can be opened and closed continuously for more than 8,000 times.
Material: 15% Graphite + 85% PTFE.
Graphite material increases temperature resistance.
Graphite, also known as Black Lead, is an allotrope of carbon (there are many other allotropes of carbon, familiar ones such as diamond); graphite gaskets are made of graphite wires. Made by knitting and shaping. Graphite gaskets are chemically inactive, corrosion-resistant, have excellent sealing performance, compressibility, good elasticity, oxidation resistance, strong self-lubricating properties and plasticity, and have good electrical conductivity, specific gravity, and density. With advanced characteristics, it is suitable for all types of valves, pumps, pipelines, pressure vessels, heat exchangers, condensers, generators, air compressors, exhaust pipes, refrigerators, and reactors working under high temperature, high pressure, and highly corrosive media. Stuffing box seals for other equipment,
☆Main features
․ High temperature resistant type: melting point is 3850±50℃, boiling point is 4250℃, even after ultra-high temperature arc burning, the weight loss is very small, and the thermal expansion coefficient is also very small. The strength of graphite increases as the temperature increases. At 2000°C, the strength of graphite doubles.
․ Electrical conductivity and thermal conductivity: 100 times higher than ordinary non-metallic minerals. The thermal conductivity exceeds that of steel, iron, lead and other metal materials. The thermal conductivity decreases as the temperature increases. Even at extremely high temperatures, graphite becomes a heat insulator.
․ Lubricity: The lubrication performance of graphite depends on the size of graphite flakes. The larger the scales, the smaller the friction coefficient and the better the lubrication performance.
․ Chemical stability: It has good chemical stability at room temperature and is resistant to acid, alkali and organic solvent corrosion.
․ Plasticity: Good toughness, can form very thin sheets.
․ Thermal shock resistance: When used at room temperature, it can withstand drastic changes in temperature without being damaged. When the temperature suddenly changes, the volume of graphite does not change much and no cracks will occur.