Ensure the cleanliness of your heavy fuel oil systems with our Boll & Kirch Industrial Filters. We currently stock the Boll & Kirch Duplex Filter Type 2.05 (DN100) alongside a Lub. Oil Automatic Filter. Previously utilised in an HFO power plant, these units are rated for a maximum working pressure of 10 bar and temperatures up to 80ºC. All filters are inspected, in good working condition, and stored in Lisbon, Portugal,.