| Type | Style | Company Name | Link |
|---|---|---|---|
| Filters | Oil Burner | General Filters, Inc. | http://www.generalfilters.com |
| Oil Filters | Cartridges | Durst Corp. | http://www.durstcorp.com |
| Preheaters | Industrial Combustion | http://www.ind-comb.com | |
| Preheaters | Tranter PHE, Inc. | http://www.tranterphe.com | |
| Fueling Components | OPW | http://www.opwglobal.com |