Materials of Construction. The materials of construction for Air Valves shall be in accordance with Table 5-6. Table 5-6 Materials of Construction for Air Valves Item Material Body, Cover and Cowl CI IS 210 Grade FG 260 High Pressure Orifice and Plug Bronze or Stainless Steel Xxxx Bronze High Pressure Ball Rubber Low Pressure Ball Vulcanite Low Pressure Seat Ring Dexine (Nitrile Rubber) Fire Hydrants Fire hydrants shall be as per Standard specification. Dismantling Joints Dismantling joints shall be a double-ended flanged adapter that allows for longitudinal adjustment in piping systems where flanged end pipe is utilized. This special shall provide flanged end pipe interfaces with valves, meters or other specials and allow for dismantling of the joint without dismantling of the connecting piping. Dismantling joints shall be fusion bonded epoxy (FBE) coated in the factory prior to shipment to the Project Site. Dismantling joints shall be installed as shown on the Drawings or as specified. Dismantling joints shall be Style 131 as manufactured by the Dresser Inc., USA, Advance Valves Ltd, Fouress Engineering Ltd, Indian Valve Pvt Ltd, Kirloskar Brothers Ltd, or equivalent. Drawings and Information to Be Provided By Contractor For each valve and set of bellows being furnished, the following shall be submitted for approval by the Employer’s Representative, prior to shipping any of these items to the project site:
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