Are Harlequin BioBunds fitted with sludge cocks/valves?
No. Best practice and legal requirements dictates that there should be no openings (other than the fuel supply pipe) below the maximum level of fuel in the tank. This reduces the risk of accidental discharge and thereby a pollution incident. As an environmentally responsible manufacturer, Harlequin tanks do not feature sludge cocks/valves. In the event that fuel contaminants need to be removed from the tank, they should be extracted by an appropriately licensed contractor via the 4″ inspection aperture.