Type SFB has the
Type SFB has the shell and jacket-side tube sheets made of stainless steel, the baffles are made of PTFE, the tubes of silicon carbide and the distributors on the tube side are entirely glass-lined. The service fluid is introduced into the jacket side, the tube side is supplied with the product. The space is equipped with a drainage hole in the lower part to enable a visual check for the presence of leaks, but it can also be pressurised or connected to an automatic control system when particularly dangerous products are being used. SiC Tubes The tubes are made of Hexoloy SA silicon carbide by Saint-Gobain Ceramics. They are approved for use by: WRC, Water Byelaws Scheme (UK), DVGW Ministry of Health (D), FDA (USA). They have high thermal conductivity, double that of tantalum, 5 times that of stainless steel, 10 times that of Hastelloy and 15 times that of glass. Silicon carbide has an excellent resistance to corrosion with practically all chemical substances up to 200°C. Silicon carbide has very high hardness - 50% greater than tungsten carbide, and it is therefore extremely resistant to wear. It is also completely impervious and therefore offers total impermeability at high temperatures and pressures.