Special application metallic expansion joints
The expansion joints used in FCCU services (catalytic disintegration for fluids) involve the most critical and complex type of manufacturing. The bellows element, a wall of relatively fine thickness, must be adequately protected against the erosive catalyzer and the corrosive fluid that circulates through these types of applications. These expansion joints are exposed to high temperatures and high pressures, generating large movements that the expansion joints absorb almost to the limit of their operating capacity. The models manufactured can be universal with fastening, angular, cardan or self-compensated from a single laminate or multi-laminate, with or without reinforcement.
Normally manufactured in 625LCF Alloy, the expansion compensators may have ceramic fiber or refractory material insulation, mesh metallic fabric or covered with a layer of insulation on the external surface of the waves.
Interior Halar-Ptfe-Concrete interior
Another range of products is Codinor’s expansion compensators with interior of PTFE, Halar, etc. These materials offer excellent chemical resistance to all acids, alkaline solutions, chlorine, sulphates or mixed compounds of any concentration in temperatures from -70 to 260ºC. Given its special characteristic of maximum permanence, ease of cleaning and absence of odors, it is often used in chemical, food and pharmaceutical processes.
Codinor also manufactures expansion compensators with interior protection/insulation of refractory concrete in combination with ceramic fiber and stainless steel mesh. These compensators are designed for working at temperatures above 1,200ºC.