Heavy crude oil residues, also known as the bottom-of-the-barrel, are the highly viscous and highly dirty residues after the first refining steps. These two properties alone represent a huge challenge for any control valve - in combination they are literally heavy duty.
Only with the correct type of valve and the use of extremely resistant materials is sustainable operation possible. Under the link you will find a success story with the Type 82.7 rotary plug valve, which was equipped with tungsten carbide and Stellite® to increase its service life.