• FCI 70-2-2006
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FCI 70-2-2006

  • Control Valve Seat Leakage
  • standard by Fluid Controls Institute, 04/01/2006
  • Publisher: FCI

$100.00$200.00


It is strongly recommended that users of FCI 70-2 also obtain a copy of FCI 70-3Order 70-2 as a set with 70-3 and save!This standard establishes six classes of seat leakage for control valves. Also defined are specific test procedures to determine the appropriate class. Included are classes commonly associated with double-port, double-seat or balanced single-port control valves with a piston ring seal or metal-to-metal seats; commercial unbalanced single-port, single-seat and balanced single-port valves with extra tight piston rings or other sealing means and metal-to-metal seats; valves for critical applications where the control valve may be required to be closed, without a blocking valve, for long period of time; and resilient seating control valveswith "O" rings or similar gapless seals, among others.

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