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RW Gate Company
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RW - Stainless Steel Flap Gates

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Leakage for the flap gates shall be restricted to 0.1 gpm/ft or less of the seal perimeter at the design seating head. Submittals shall include, at a minimum, detailed custom drawings of the gate assembly with dimensional and mounting information and a listing of the materials of construction. General arrangement drawings and cut sheets are not considered acceptable drawings.  

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GENERAL

  1. The flap gates shall be provided as specified and as shown in the Contract Documents.    

QUALITY ASSURANCE

  1. The basis for the design of the flap gates is the Model RW5000-S as manufactured by RW Gate Company, Troy, NY.
  2. All gates shall be shop inspected for proper operation prior to shipment.
  3. Welds shall be performed by welders with ASME Section IX certification.
  4. The gate manufacturer shall be ISO 9001:2015 certified.  

MATERIALS OF CONSTRUCTION

  1. All stainless steel referenced in this specification shall be Type (304)(316) or Type (304L)(316L), ASTM A240 or ASTM A276 unless otherwise indicated herein.
    1. All welded stainless steel components shall be constructed of Type (304L)(316L) stainless steel.
    2. All structural stainless steel used in the construction of the flaps, frames shall have a minimum material thickness of ¼-inch.
    3. All non-welded stainless steel components, excluding anchor bolts and assembly bolts, shall be Type (304)(316) or Type (304L)(316L) stainless steel.
    4. Anchor bolts and assembly bolts shall be Type 316 stainless steel.