AMMtech srl.

AMMtech srl.

Model AMM 731 - Butterfly Damper Valve



Butterfly Damper Valve for Fumes, Gas and high temperatures up to a 600°C. Available from DN 50 to DN 2000 in Wafer or Flanged version, Metal to Metal or Enhanced seatto improve its performance. Manual operated by means of Handlever or Gearbox, Automatic ON/OFF or Modulating by means of Pneumatic or Electric actuator.


  • Gas and Fume Fluids
  • Incineration Plants, CHP Plants, Steel Industry, Cement Plants, HVAC,
  • Air Pollution and Filtration, Power Plants, Pulp and Paper Industry, Chemical Industry, Oil&Gas, Furnaces

Working Conditions

  • Maximum Working Temperature up to 600°C
  • Maximum Working Pressure up to 3 bar

General Characteristics

  • ON/OFF or MODULATING Service
  • Diameter Range from DN 50 to DN 2000
  • End Connections: WAFER or FLANGED PN6, PN10, ANSI 150, Butt Weld or according to Customer Drawing
  • Outside Bushing
  • Tightness Class I, II and III according to FCI70-2 (ex ANSI B16.104)
  • Operated by Handlever, Pneumatic or Electric Actuators
  • Designed for Insulation 200 mm


  • Carbon Steel: S355JOWP CORTEN A (Tmax < 450°C) -321 SS -316SS
  • others upon request

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