Because of the 1990 Amendments to the Federal Clean Air Act petroleum refineries and other industries throughout the country must examine every aspect of their process-heating operations in order to reduce cumulative nitrogen oxide (NOx) emissions Learn more

Bore- and shaft-mounted halves of Defender never touch but instead collect contaminants in labyrinthine chambers and expel them out bottom port Seal protects pillow block bearings which are naturally loose to compensate for misalignment Because Learn more