West Brothers waste oil heaters. Salt Lake City, UT. Mon-Fri Mountain Time 8:30-5. All brass Norgren fuel pressure regulator. R06-2K4-NNAA Viton seals for waste oil. Fits Firelake, Old Lanair, Shenandoah, Old style Clean Burn (not built into the preheater), Wedco and many others. See our do it yourself service videos on Youtube. With more than 20 years experience in heating, we can find the right unit to meet your needs. Item arrives in original factory packaging. Items must be in original unopened packaging. 4740 S Riverside Dr.