Waterman Industries, Inc. F-25 Medium Duty Drainage Gate

Cast Iron Construction Automatic Operation Fully Adjustable Hinge Links 25 Foot Seating Head Maximum The Waterman Model F-25 Drainage Gate features a high strength, fully adjustable linkage, providing for sensitive adjustment of the flap cover after installation. The design of this gate prevents jamming and assures proper seating through the use of built-in safety stops and a 2 1/2" to 5" seating angle. Flatback and Spigotback models are available. A choice of seat facings is available and includes machined or ground iron, bronze or neoprene cover gasket which is available with either iron or bronze mating frame seats. The use of the Waterman neoprene cover seal provides a long life tight seal, which can be easily renewed. The heavy seal also provides a moderate cushioning of shock loads where some slamming may occur. This model is not recommended for pump discharges where violent slamming can occur. • Cast Iron Frame and Cover • High Strength Ductile Iron or Steel Links • Stainless Steel Studs, Bolts and Pins, Standard. Brass or Monel, Optional. • Bronze Bushings, Standard. Permanently Lubricated Bronze or Teflon, Optional. • Minimum 2 1/2" Seating Angle. 24" Diameter and over. • Minimum 5" Seating Angle. 21" Diameter and smaller. • Optional 25 lb. and 125 lb. ANSI Flange Drilling. CAST IRON SEAT - Standard. Used for moderate conditions where costs must be minimized. BRASS SEAT - Optional. Used for corrosive conditions where long service is important. NEOPRENE SEAT (with iron or bronze) - Optional. Replaceable in flap cover. Cushions "slam" on closing and provides tighter seal. General The drainage gate shall be designed to allow free outflow and prevent backflow for maximum seating heads up to 25 feet. Gates shall be Waterman Model F-25 or equal. Construction The frame shall be cast iron of flatback or spigotback design, with machined seating surface inclined from vertical at minimum of 2 1/2", to assure positive closure. For flatback gates mounted to thimbles or flanges, the gate flange shall be machined and drilled to match. The cover shall be cast iron, cast in one piece, with reinforcing ribs, designed to withstand the seating head specified. An integral cast on lifting eye shall be provided for manual operation. Seating surfaces for frame and cover shall be: (bronze on seat and cover) (machined iron on frame, neoprene on cover) (bronze on frame, neoprene on cover) All machined seats shall have a minimum 63 microinch finish. The gate shall be provided with adjustable, double pivoted hinge links so designed to permit complete seating, full opening, and with stops or other arrangement to prevent cover from rotating sufficiently to become wedged in the open position. Pivot lugs mounted to frame shall …