Viking Deluge Valves are quick opening, differential diaphragm flood valves with one moving mechanism. The Viking Model F-2 Halar® Coated Deluge Valve is identical to the Viking Model F-1 Deluge Valve, except the Model F-2 is manufactured with specially coated components. The body and cover of the Model F-2 Deluge Valve is coated inside and outside with Halar® Coating consisting of ethylene chlorotrifluoroethylene (ECTFE). The coating makes the valve suitable for use in corrosive environments similar to those found on offshore platforms and many industrial chemical facilities.